Three-way valve

Abstract

The utility model discloses a three-way valve which comprises a shell, symmetrical water outlet pipes are arranged on the two sides of the shell, a water inlet pipe communicated with the two water outlet pipes is arranged at the bottom of the shell, a spherical cavity is formed in the intersection position of the water inlet pipe and the water outlet pipes, a valve rod is rotationally connected to the upper portion of the shell, a ball valve is connected to the lower end of the valve rod, and the ball valve is movably arranged in the spherical cavity. A stand column is arranged at the upper end of the shell and connected with a driving mechanism for driving the valve rod to rotate. A water inlet hole is formed in the bottom face of the ball valve, a first water outlet hole penetrating in the diameter direction is formed in the middle of the ball valve, a second water outlet hole is further formed in the middle of the ball valve, the first water outlet hole and the second water outlet hole are both communicated with the water inlet hole, and the water inlet hole is communicated with the water inlet pipes. Or the second water outlet hole is communicated with any water outlet pipe. Opening and closing of the two water outlet pipes can be achieved only through rotation of the ball valves, use convenience is improved, the number of parts is reduced, and cost is reduced.

Description

Technical Field

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

[0002] A three-way valve is a valve device with three ports, one inlet and two outlets. According to the fluid action mode, the three-way valve is divided into a converging valve and a diverting valve. The converging valve has two inlets, and the fluid flows out from one outlet after converging. The diverting valve has one fluid inlet, and the fluid flows out from two outlets after diversion.

[0003] The current three-way valve has the following problems: (1) The two outlets are either opened or closed at the same time, and it is impossible to connect only one outlet to the inlet, which is not conducive to scheduling; for this reason, some three-way valves are provided with three sets of plugs, each set of plugs blocks one opening, and each set of plugs requires a control mechanism to control the opening and closing, which increases the number of parts and increases the cost; (2) When the drive component of the current electric three-way valve is damaged, the maintenance time of the drive control component is relatively long, which causes the three-way valve to fail to work normally. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a three-way valve to solve the problems mentioned in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A three-way valve comprises a shell, symmetrical water outlet pipes are arranged on both sides of the shell, a water inlet pipe connected with the two water outlet pipes is arranged at the bottom of the shell, the intersection of the water inlet pipe and the water outlet pipe is a spherical cavity, a valve stem is rotatably connected to the upper part of the shell, a ball valve is connected to the lower end of the valve stem, the ball valve is movably arranged in the spherical cavity, a column is arranged at the upper end of the shell, and a driving mechanism for driving the valve stem to rotate is connected to the column; a water inlet hole extending inwardly is arranged on the bottom surface of the ball valve, a first water outlet hole penetrating along the diameter direction is arranged in the middle part of the ball valve, a second water outlet hole is also arranged in the middle part of the ball valve, the first water outlet hole and the second water outlet hole are both connected with the water inlet hole, the first water outlet hole and the second water outlet hole are located in the same plane and are perpendicular to each other, the water inlet hole is connected with the water inlet pipe, and the first water outlet hole can be connected with the two water outlet pipes, or the second water outlet hole can be connected with any water outlet pipe by rotating the ball valve.

[0007] Preferably, the driving mechanism includes a motor connected to the column, a transmission shaft connected to the motor through a coupling, and a transmission sleeve splined to the valve stem, with a gap between the transmission shaft and the valve stem, matching screw holes are provided on the transmission sleeve, the valve stem and the transmission shaft, the upper end of the transmission sleeve is splined to the transmission shaft and fixed to the transmission shaft by bolts, and the lower end of the transmission sleeve is splined to the valve stem and fixed to the valve stem by bolts.

[0008] Preferably, the outer wall of the transmission sleeve is provided with a polygonal turning area for turning with a wrench.

[0009] Preferably, a first sealing gasket is provided in the spherical cavity and located on the periphery of the ball valve and is located on the same spherical surface.

[0010] Preferably, a circle of second sealing gasket is provided at the connection between the housing and the valve stem.

[0011] Preferably, an indicator plate is connected to the bottom of the transmission sleeve, and the indicator plate is provided with three indicator arrows respectively aligned with the first water outlet and the second water outlet.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] (1) By driving the valve stem to rotate, the valve stem drives the ball valve to rotate, so that the first water outlet hole and the two water outlet pipes can be connected, so that the liquid can flow out of the two water outlet pipes at the same time; the valve stem drives the ball valve to rotate, and the second water outlet hole can also be connected to any water outlet pipe, so that one water outlet pipe is opened and the other water outlet pipe is closed; the valve stem drives the ball valve to rotate, and the first water outlet hole and the second water outlet hole can be staggered with the two water outlet pipes, so that the two water outlet pipes are closed by the ball valve to achieve the closure of the water outlet pipes. It can be seen that the opening and closing of the two water outlet pipes can be achieved only by rotating the ball valve, which improves the convenience of use, reduces the number of parts, and reduces costs.

[0014] (2) When the motor is damaged, loosen the bolts, slide the transmission sleeve downward to separate the transmission sleeve from the transmission shaft, and then use a tool to pull the transmission sleeve, then manually pull the valve stem to rotate the ball valve without waiting for the motor to be repaired. Therefore, the three-way valve can still work normally after the motor is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram after the transmission sleeve and the transmission shaft are separated;

[0017] Figure 3 is a schematic diagram of a ball valve;

[0018] Figure 4 It is a top view of the transmission sleeve and the housing;

[0019] Figure 5 It is a top sectional view of the utility model;

[0020] Figure 6 It is a schematic diagram of the first water outlet hole being connected with the two water outlet pipes in the bottom view;

[0021] Figure 7is a schematic diagram of the second water outlet being connected to one of the water outlet pipes in the bottom view;

[0022] Figure 8 It is a schematic diagram of closing two water outlet pipes in the bottom view;

[0023] In the figure: 1-shell, 2-water outlet pipe, 3-water inlet pipe, 4-valve stem, 5-ball valve, 6-column, 7-water inlet hole, 8-first water outlet hole, 9-second water outlet hole, 10-motor, 11-transmission shaft, 12-transmission sleeve, 13-polygonal pull area, 14-first sealing gasket, 15-second sealing gasket, 16-indicator plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0025] Example 1

[0026] See also Figure 1-4 A three-way valve comprises a shell 1, symmetrical water outlet pipes 2 are arranged on both sides of the shell 1, a water inlet pipe 3 connected with the two water outlet pipes is arranged at the bottom of the shell 1, the water inlet pipe 3 is perpendicular to the water outlet pipe 2, and the intersection of the water inlet pipe 3 and the water outlet pipe 2 is a spherical cavity, a valve stem 4 is rotatably connected to the upper part of the shell 1, a ball valve 5 is connected to the lower end of the valve stem 4, and the ball valve 5 is movably arranged in the spherical cavity, a column 6 is arranged at the upper end of the shell 1, and a driving mechanism for driving the valve stem 4 to rotate is connected to the column 6; The driving mechanism includes a motor 10 connected to the column, a transmission shaft 11 connected to the motor through a coupling, and a transmission sleeve 12 splined to the valve stem. There is a gap between the transmission shaft 11 and the valve stem 4. The transmission sleeve 12, the valve stem 4 and the transmission shaft 11 are all provided with matching screw holes. The upper end of the transmission sleeve 12 is splined to the transmission shaft 11 and fixed to the transmission shaft 11 by bolts. The lower end of the transmission sleeve 12 is splined to the valve stem 4 and fixed to the valve stem 4 by bolts. The motor works to drive the transmission shaft to rotate, and the transmission shaft drives the valve stem to rotate through the transmission sleeve, thereby driving the ball valve to rotate. The outer wall of the transmission sleeve 12 is provided with a circle of polygonal turning area 13 for turning with a wrench. When the motor is damaged or the power is off, the bolts are removed and the transmission sleeve is moved downward to separate it from the transmission shaft. At this time, the transmission sleeve is only splined to the valve stem. The polygonal turning area 13 can be manually turned by turning the polygonal turning area 13 with the help of a wrench or other tools to realize the rotation of the ball valve.

[0027] The bottom surface of the ball valve 5 is provided with an inwardly extending water inlet hole 7, the middle part of the ball valve 5 is provided with a first water outlet hole 8 which penetrates along the diameter direction, and the middle part of the ball valve 5 is also provided with a second water outlet hole 9. The first water outlet hole 8 and the second water outlet hole 9 are located in the same plane and are perpendicular to each other. The first water outlet hole 8 and the second water outlet hole 9 are both connected with the water inlet hole 7, and the water inlet hole 7 is connected with the water inlet pipe 3. By rotating the ball valve 5, the first water outlet hole 8 can be connected with the two water outlet pipes 2, or the second water outlet hole 9 can be connected with any one of the water outlet pipes 2.

[0028] A first sealing gasket 14 is provided in the spherical cavity on the periphery of the ball valve 5. The first sealing gasket 14 can seal the contact between the ball valve and the spherical cavity to prevent liquid leakage.

[0029] A circle of second sealing gasket 15 is provided at the connection between the housing 1 and the valve stem 4. The second sealing gasket 15 can make the contact between the valve stem 4 and the housing 1 airtight to prevent liquid leakage.

[0030] The working principle of this embodiment is:

[0031] Start the motor 10 to drive the valve stem 4 to rotate, and the valve stem 4 drives the ball valve 5 to rotate, so that the first water outlet 8 and the two water outlet pipes 2 are connected, and water enters from the water inlet pipe 3 and flows out from the water outlet pipe 2 through the water inlet hole 7 and the two first water outlet holes 8 (such as Figure 6 The valve rod 4 drives the ball valve 5 to rotate, and the second water outlet 9 can also be connected to any water outlet pipe 2, so that one water outlet pipe is opened and the other water outlet pipe is closed (as shown in FIG. Figure 7 The valve stem 4 drives the ball valve 5 to rotate, and can also make the first water outlet hole 8 and the second water outlet hole 9 staggered with the two water outlet pipes 2, so that the two water outlet pipes 2 are closed by the ball valve 5, and the water outlet pipe 2 is closed.

[0032] It should be noted that a controller is also provided in the shell, and a control program is provided in the controller for controlling the number of revolutions and direction of each rotation of the motor, so that the first water outlet and the second water outlet can be aligned with the water outlet pipe respectively.

[0033] In actual application, flow meters can be set on the two outlet pipes of the three-way valve. If the flow meter has a reading, it indicates that the corresponding outlet pipe is open. If there is no reading, it indicates that the corresponding outlet pipe is closed.

[0034] Example 2

[0035] On the basis of Example 1, the bottom of the transmission sleeve 12 is connected with an indicator plate 16, and the indicator plate 16 is provided with three indicator arrows respectively aligned with the first water outlet hole 8 and the second water outlet hole 9. When the valve stem is driven to rotate, the positions of the first water outlet hole 8 and the second water outlet hole 9 can be conveniently confirmed by viewing the indicator arrows on the indicator plate 16, so as to more conveniently control the opening and closing of the water outlet pipe 2.

[0036] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-way valve, characterized in that: The invention comprises a shell (1), wherein symmetrical water outlet pipes (2) are arranged on both sides of the shell (1), a water inlet pipe (3) connected to the two water outlet pipes is arranged at the bottom of the shell (1), the water inlet pipe (3) is perpendicular to the water outlet pipe (2), and the intersection of the water inlet pipe (3) and the water outlet pipe (2) is a spherical cavity, the upper part of the shell (1) is rotatably connected to a valve stem (4), the lower end of the valve stem (4) is connected to a ball valve (5), and the ball valve (5) is movably arranged in the spherical cavity, and the upper end of the shell (1) is provided with a column (6), and the column (6) is connected to a driving mechanism for driving the valve stem (4) to rotate; the ball valve (5) The bottom surface of the ball valve (5) is provided with an inwardly extending water inlet hole (7), the middle part of the ball valve (5) is provided with a first water outlet hole (8) which penetrates along the diameter direction, and the middle part of the ball valve (5) is also provided with a second water outlet hole (9). The first water outlet hole (8) and the second water outlet hole (9) are located in the same plane and are perpendicular to each other. The first water outlet hole (8) and the second water outlet hole (9) are both connected to the water inlet hole (7), and the water inlet hole (7) is connected to the water inlet pipe (3). By rotating the ball valve (5), the first water outlet hole (8) can be connected to the two water outlet pipes (2), or the second water outlet hole (9) can be connected to any one of the water outlet pipes (2).

2. A three-way valve according to claim 1, characterized in that: The driving mechanism comprises a motor (10) connected to a column, a transmission shaft (11) connected to the motor via a coupling, and a transmission sleeve (12) spline-connected to a valve stem, a gap being provided between the transmission shaft (11) and the valve stem (4), the transmission sleeve (12), the valve stem (4) and the transmission shaft (11) being provided with matching screw holes, the upper end of the transmission sleeve (12) being spline-connected to the transmission shaft (11) and being fixed to the transmission shaft (11) via bolts, and the lower end of the transmission sleeve (12) being spline-connected to the valve stem (4) and being fixed to the valve stem (4) via bolts.

3. A three-way valve according to claim 2, characterized in that: The outer wall of the transmission sleeve (12) is provided with a polygonal turning area (13) for turning with a wrench.

4. A three-way valve according to claim 3, characterized in that: A first sealing gasket (14) is provided in the spherical cavity and located on the periphery of the ball valve (5) and on the same spherical surface.

5. A three-way valve according to claim 4, characterized in that: A circle of second sealing gasket (15) is provided at the connection between the housing (1) and the valve stem (4).

6. A three-way valve according to any one of claims 2-3, characterized in that: The bottom of the transmission sleeve (12) is connected to an indicator plate (16), and the indicator plate (16) is provided with three indicator arrows respectively aligned with the first water outlet hole (8) and the second water outlet hole (9).

Images