Automatically regulating reflux four-way valve and its mixing center

Abstract

The present invention discloses an automatic regulating reflux four-way valve and its water mixing center. The four-way valve comprises a valve body with a valve cavity arranged therein, a rotating shaft rotatably connected in the valve body, a guide plate arranged in the valve cavity on the rotating shaft, and the guide plate slides and seals with the inner wall of the valve cavity; the guide plate comprises a main body arranged at the outer periphery of the rotating shaft, and two plate-shaped wings integrally formed with the main body, and the two wings are arranged at 180 degrees; the guide plate has an arc-shaped guide surface extending from the main body to the wing. In the present invention, the wing of the guide plate is plate-shaped, and the main body of the guide plate is columnar, with a relatively large outer diameter, and can withstand the impact of water flow from the water supply inlet and the return water inlet, with high structural strength and long service life; at the same time, the water flow entering the valve cavity from the water supply inlet and / or the return water inlet can flow to the water supply outlet and / or the return water outlet along the corresponding arc-shaped guide surface, and will not form a vortex in the valve cavity, and the guide effect is better.

Description

Technical Field

[0001] The invention belongs to the technical field of heating facilities, and in particular relates to an automatic regulating reflux four-way valve and a water mixing center thereof. Background Art

[0002] Floor heating is a widely used heating facility. Currently, the heat medium for floor heating is usually hot water. The temperature of the hot water output by the heating network is the same, but the requirements of the heating parameters for each heating user connected to the heating network are different. Therefore, it is necessary to be able to adjust the heating parameters at any time.

[0003] In order to solve the above problems, the Chinese invention patent with the authorization announcement number CN101482294B discloses a spherical two-way water mixer for hot water heating system, the water mixer comprises a spherical shell, at the same horizontal height of the spherical shell, the outer wall of the spherical shell is respectively provided with a heating network water supply pipe interface, a heating network return pipe interface, a user water supply pipe interface and a user return pipe interface, and the heating network water supply pipe interface, the heating network return pipe interface, the user water supply pipe interface and the user return pipe interface are arranged at intervals of 90 degrees around the outer periphery of the spherical shell. A guide plate is arranged in the spherical shell, and a rotating shaft is connected between the guide plate and the inner wall of the spherical shell, the rotating shaft passes through the center of the ball, the rotating surface of the guide plate is perpendicular to the plane where the heating network water supply pipe interface, the heating network return pipe interface, the user water supply pipe interface and the user return pipe interface are located, and the rotation direction requires that both clockwise and counterclockwise rotation can be achieved, and a flange is fixed on the ports of the heating network water supply pipe interface, the heating network return pipe interface, the user water supply pipe interface and the user return pipe interface.

[0004] By adjusting the angle of the guide plate in the spherical shell, the function of opening or closing the spherical two-way water mixer can be realized, and the water mixing function can also be realized to adjust the temperature of the hot water entering the user's water supply pipe interface.

[0005] The disadvantages of the spherical two-way water mixer are that the guide plate used is disc-shaped, the thickness of the entire guide plate is uniform, and the guide surface is also flat; the center of the guide plate is directly opposite to the heating network water supply pipe interface and the user return pipe interface. Under the frontal impact of the heating network water supply and / or user return water, the guide plate of this structure not only has a low structural strength, but also easily forms a vortex in the spherical shell, resulting in a poor guide effect. Summary of the invention

[0006] The invention aims to provide an automatic regulating reflux four-way valve with high structural strength and good flow guiding effect.

[0007] To achieve the above-mentioned object of the invention, the technical solution of the present invention is as follows:

[0008] An automatic regulating reflux four-way valve comprises a valve body with a valve cavity therein, the valve body is rotatably connected to a rotating shaft, the rotating shaft carries a guide plate located in the valve cavity, the guide plate slides and seals against the inner wall of the valve cavity; a water supply inlet, a water supply outlet, a return water inlet and a return water outlet connected to the valve cavity are evenly arranged around the circumference of the valve body; the guide plate comprises a main body arranged on the outer circumference of the rotating shaft, and two plate-shaped wings integrally formed with the main body, the two wings being arranged at 180 degrees; the guide plate has an arc-shaped guide surface extending from the main body to the wing.

[0009] In the automatic regulating reflux four-way valve of the present invention, the wing of the guide plate is plate-shaped, while the main body of the guide plate is arranged on the outer periphery of the rotating shaft and is columnar, so it has a relatively larger outer diameter than the wing, and can withstand the impact of a large water flow from the water supply inlet and the return water inlet, and has high structural strength and long service life. At the same time, an arc-shaped guide surface extending from the main body to the wing is formed on the guide plate, so that the water flow entering the valve cavity from the water supply inlet and / or the return water inlet can flow to the water supply outlet and / or the return water outlet along the corresponding arc-shaped guide surface, and will not form a vortex in the valve cavity, and the guide effect is better.

[0010] In the above-mentioned automatic regulating reflux four-way valve, the valve cavity is cylindrical. Compared with the spherical valve cavity, the cylindrical valve cavity omits the space at both ends of the spherical valve cavity. Since this part of the space is far away from the horizontal plane where the water supply inlet, water supply outlet, return water inlet and return water outlet are located, and is not directly opposite to the water supply inlet, water supply outlet, return water inlet and return water outlet, the water flow is slow and dirt is easily deposited, which makes it necessary to set an additional sewage outlet on the spherical shell. The overall space of the cylindrical valve cavity is almost on the same plane as the water supply inlet, water supply outlet, return water inlet and return water outlet. There is no slow flow area in the valve cavity, and it is not easy to deposit dirt. Therefore, there is no need to open a sewage outlet on the valve body.

[0011] The automatic regulating reflux four-way valve described in the present invention also includes a valve cover, which is sealed and connected to the valve body through a flange connector; a through hole is opened on the valve cover, and the rotating shaft extends from the through hole to the valve cavity, and the rotating shaft and the through hole are sealed and matched.

[0012] In the above-mentioned automatic regulating reflux four-way valve, the flange connection member includes a first flange fixedly arranged on the valve body, and a second flange fixedly arranged on the valve cover, the second flange is provided with a plurality of external threaded holes, the first flange is provided with thread grooves corresponding to the external threaded holes one by one, and an external fastening bolt is installed between the external threaded holes and the thread grooves belonging to the same pair;

[0013] The valve cover has a convex column extending into the valve cavity, and the convex column and the inner wall of the valve cavity, and the guide plate and the convex column are all slidably and sealingly matched.

[0014] The sliding and sealing fit between the boss and the inner wall of the valve chamber ensures the sealing between the first flange and the second flange. The sliding and sealing fit between the guide plate and the boss, and between the boss and the inner wall of the valve chamber ensures the sealing between the guide plate and the boss while facilitating the rotation of the guide plate with the rotating shaft, thereby preventing water from flowing out of the gap between the guide plate and the boss, causing temperature regulation failure.

[0015] In the above-mentioned automatic regulating reflux four-way valve, the first flange is integrally formed with the valve body, the second flange is integrally formed with the valve cover, and the through hole passes through the second flange.

[0016] In the above-mentioned automatic regulating reflux four-way valve, the second flange has a first countersunk hole located on the outer periphery of the through hole on the side facing away from the valve body, and a plurality of internal thread grooves arranged along the circumference of the second flange, and the countersunk hole and the internal thread groove are used to install a driving mechanism for driving the rotating shaft to rotate. After the output shaft of a circumferential driver such as a motor is fixedly connected to the rotating shaft, the first countersunk hole and the internal thread groove can fix the circumferential driver such as the motor on the valve cover, thereby achieving effective fixation of the two.

[0017] In the above-mentioned automatic regulating reflux four-way valve, at least one annular groove is provided on the outer circumference of the rotating shaft, a sealing ring is embedded in the annular groove, and the sealing ring slides and seals against the inner wall of the through hole.

[0018] In the above-mentioned automatic regulating reflux four-way valve, the bottom surface of the valve cavity is provided with a second countersunk hole for rotationally cooperating with the rotating shaft. The second countersunk hole is used to limit the position of the rotating shaft to ensure that the rotating shaft remains in a vertical state.

[0019] Generally, the water supply inlet and the return water inlet are set in a circular shape, but in the above-mentioned automatic regulating reflux four-way valve, the openings of the water supply outlet and the return water outlet are larger in the circumferential direction of the valve cavity; in the axial direction of the valve cavity, the openings of the water supply outlet and the return water outlet are smaller. In this way, when adjusting the mixed water temperature, the guide plate has a larger rotation angle at the water supply outlet and the return water outlet, so that the adjustment accuracy of the mixed water temperature is higher.

[0020] In the above-mentioned automatic regulating reflux four-way valve, the openings of the water supply outlet and the return water outlet are both hexagonal. On the circumference of the valve cavity, a drainage surface is provided at the vertex of the hexagonal opening, and the drainage surface is respectively connected to the two surfaces forming the vertex. Since the distance between the two vertexes on the circumference of the valve cavity is the largest, the space at the vertex is relatively small; when the water flows out of the valve cavity, it is very easy to form a vortex at the vertex. Cutting off the drainage surface formed by the vertex is conducive to eliminating the vortex and maintaining the stability of the water flow.

[0021] The present invention discloses an automatically adjustable reflux water mixing center, which comprises a water mixer, a water distributor connected to a water supply outlet of the water mixer, and a water collector connected to a return water inlet of the water mixer; the water mixer is the above-mentioned automatically adjustable reflux four-way valve, the water outlet end of the water collector is also provided with a temperature sensor for detecting the return water temperature, the rotating shaft in the automatically adjustable reflux four-way valve is connected to a driving mechanism, and the driving mechanism and the temperature sensor are both connected to a controller.

[0022] The controller is used to receive the output signal of the temperature sensor and send instructions to the driving mechanism according to the output signal to adjust the position of the guide plate.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In the automatic regulating reflux four-way valve of the present invention, the wing of the guide plate is plate-shaped, while the main body of the guide plate is arranged on the outer periphery of the rotating shaft and is columnar, so it has a relatively larger outer diameter than the wing, and can withstand the impact of a large water flow from the water supply inlet and the return water inlet, and has high structural strength and long service life. At the same time, an arc-shaped guide surface extending from the main body to the wing is formed on the guide plate, so that the water flow entering the valve cavity from the water supply inlet and / or the return water inlet can flow to the water supply outlet and / or the return water outlet along the corresponding arc-shaped guide surface, and will not form a vortex in the valve cavity, and the guide effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of the automatic regulating reflux four-way valve of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the automatic regulating reflux four-way valve of the present invention from another perspective;

[0027] Figure 3 It is a schematic diagram of the explosion structure of the automatic regulating reflux four-way valve of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the valve body of the automatic regulating reflux four-way valve of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the automatic adjustment of the reflux mixing water center of the present invention. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Example 1

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the present embodiment is an automatic regulating reflux four-way valve, comprising a valve body 1 with a valve cavity 11 therein, the valve cavity 11 is cylindrical, and a water supply inlet 12, a water supply outlet 13, a return water inlet 14 and a return water outlet 15 connected to the valve cavity 11 are evenly arranged around the outer circumference of the valve body 1. The water supply inlet 12 is also provided with a heat network water supply pipe interface 16 for connecting to a heat source, the water supply outlet 13 is provided with a user water supply pipe interface 17 for connecting to a water distributor, the return water inlet 14 is provided with a user return water pipe interface 18 for connecting to a water collector, and the return water outlet 15 is provided with a heat source return water pipe interface 19 for connecting to a heat source; the heat network water supply pipe interface 16, the user water supply pipe interface 17, the user return water pipe interface 18 and the heat source return water pipe interface 19 are all formed integrally with the valve body 1. In this embodiment, one end of the valve cavity 11 is closed, and at the other end of the valve cavity 11, the valve body 1 is fixedly connected to the valve cover 2 through the flange connection 3. The valve cover 2 has a protrusion 21 extending into the valve cavity 11. The protrusion 21 slides and seals with the inner wall of the valve cavity 11.

[0033] like Figure 3 Shown, combined Figure 1 and Figure 2 It can be seen that the flange connector 3 includes a first flange 31 integrally formed with the valve body 1 and a second flange 32 integrally formed with the valve cover 2, wherein the second flange 32 is provided with a plurality of external threaded holes 32a, and the first flange 31 is provided with threaded grooves 31a corresponding to each external threaded hole 32a one by one, and the valve body 1 and the valve cover 2 can be fixedly connected by installing external fastening bolts (not shown in the figure) between the external threaded holes 32a and the threaded grooves 31a.

[0034] like Figure 3 Shown, combined Figure 1 and Figure 2 It can be seen that a through hole 22 is provided at the center of the valve cover 2, and the through hole 22 passes through the first flange 31 and the boss 21. A rotating shaft 4 extending into the valve cavity 11 is installed in the through hole 22, and the rotating shaft 4 rotates and seals with the through hole 22; the sealing cooperation between the two is as follows: Figure 3 As shown, at least one annular groove 41 is formed on the outer circumference of the rotating shaft 4, and a sealing ring 42 is embedded in the annular groove 41. The sealing ring 42 slides and seals with the inner wall of the through hole 22.

[0035] The part of the rotating shaft 4 located outside the valve cover 2 is connected to the power output end of the driving mechanism (not shown in the figure), and the driving mechanism is used to drive the rotating shaft 4 to rotate; the second flange 32 is provided with a first countersunk hole 32b located on the outer periphery of the through hole 22, and a plurality of internal thread grooves 32c arranged along the circumference of the second flange 32, and the first countersunk hole 32b and the internal thread groove 32c are used to fix the driving mechanism on the valve cover 2.

[0036] One end of the rotating shaft 4 extending into the valve cavity 11 is provided with a guide plate 5, one end of the guide plate 5 is in contact with the convex column 21, and the two slide and seal together; the other end of the guide plate 5 is in contact with the bottom surface of the valve cavity 11, and the two slide and seal together; at the same time, the bottom surface of the valve cavity 11 is also provided with a second countersunk hole 110 that rotates with the rotating shaft 4, and the second countersunk hole 110 is used to limit the position of the rotating shaft 4 to ensure that the rotating shaft 4 remains in a vertical state.

[0037] like Figure 3 As shown, in this embodiment, the guide plate 5 includes a main body portion 51 which is arranged on the outer periphery of the rotating shaft 4 and is integrally formed with the rotating shaft 4, and two wing portions 52 which are integrally formed with the main body portion 51, and the two wing portions 52 are arranged at 180°; wherein, the main body portion 51 is in the same columnar shape as the rotating shaft 4, and the wing portions 52 are in the shape of a plate, which makes the guide plate 5 have a shuttle-shaped cross-section, so that both sides of the guide plate 5 have an arc-shaped guide surface 53 extending from the main body portion 51 to the wing portions 52.

[0038] In this embodiment, the water supply inlet 12 and the return water inlet 14 are both circular openings, while the opening shapes of the water supply outlet 13 and the return water outlet 15 are not circular; in the circumferential direction of the valve cavity 11, the openings of the water supply outlet 13 and the return water outlet 15 are larger; and in the axial direction of the valve cavity 11, the openings of the water supply outlet 13 and the return water outlet 15 are smaller.

[0039] like Figure 1 and Figure 2 As shown, in this embodiment, the openings of the water supply outlet 13 and the return water outlet 15 are both hexagonal. In the rotation direction of the circumferential axis 4 of the valve chamber 11, the distance between the two vertex angles of the hexagonal water supply outlet 13 (or the return water outlet 15) is the largest; at the same time, a drainage surface 111 is added at the vertex position, and the drainage surface 111 is respectively connected to the two surfaces 112 forming the vertex angle; to avoid the formation of vortices at the vertex angle with a smaller angle, resulting in unstable water flow.

[0040] In this way, when adjusting the mixed water temperature, the guide plate 5 has a larger rotation angle, so that the adjustment accuracy of the mixed water temperature is higher.

[0041] The working principle of an automatic regulating reflux four-way valve in this embodiment is as follows:

[0042] When the guide plate 5 is located between the water supply inlet 12 and the return water outlet 15 (and between the water supply outlet 13 and the return water inlet 14), the high-temperature water entering the valve cavity 11 from the water supply inlet 12 flows along the arc-shaped guide surface 53 to the wing 52 at the contact point with the main body 51 of the guide plate 5, and then all flows out from the water supply outlet 13 for heating; while the low-temperature water entering the valve cavity 11 from the return water inlet 14 flows along the arc-shaped guide surface 53 to the wing 52 at the contact point with the main body 51 of the guide plate 5, and then all flows out from the return water outlet 15 to return to the heating network;

[0043] When the guide plate 5 lies between the water supply outlet 13 and the return water outlet 15 (such as Figure 4 As shown in the figure, a part of the high-temperature water entering the valve cavity 11 from the water supply inlet 12 and a part of the low-temperature water entering the valve cavity 11 from the return water inlet 14 both flow out from the water supply outlet 13 to achieve mixed water; the temperature of the mixed water can be adjusted by adjusting the angle of the guide plate 5 and changing the opening size of the water supply outlet 13 on both sides of the guide plate 5;

[0044] When the guide plate 5 is between the water supply inlet 12 and the water supply outlet 13 (as well as between the return water inlet 14 and the return water outlet 15), all the high-temperature water entering the valve cavity 11 from the water supply inlet 12 flows out from the return water outlet 15 and returns to the heating network; and all the low-temperature water entering the valve cavity 11 from the return water inlet 14 flows out from the water supply outlet 13 and returns to the heating users; at this time, the heating network does not supply heat to the users.

[0045] Example 2

[0046] like Figure 5 As shown, this embodiment is an automatic regulating return water mixing center, including a water mixer 100, which is the same automatic regulating return four-way valve 100 as in Embodiment 1, the water supply inlet 12 and the return water outlet 15 of the water mixer 100 are both connected to the heating network 200, the water supply outlet 13 is connected to the water distributor 300, and the return water inlet 14 is connected to the water collector 400; each water distribution pipe 500 connecting the water distributor 300 and the water collector 400 is provided in each user or room.

[0047] Depend on Figure 5 It can be seen that the water outlet of the water collector 400 is also provided with a temperature sensor 600 for detecting the return water temperature, and the valve cover 2 of the water mixer 100 is provided with a driving mechanism (not shown in the figure) connected to the rotating shaft 4, and the driving mechanism and the temperature sensor 600 are both connected to a controller (not shown in the figure). The controller is used to receive the output signal of the temperature sensor 600, and send instructions to the driving mechanism according to the output signal to adjust the position of the guide plate 5.

Claims

1. An automatic regulating reflux four-way valve, comprising a valve body (1) with a valve cavity (11) therein, a rotating shaft (4) rotatably connected to the valve body (1), the rotating shaft (4) having a guide plate (5) located in the valve cavity (11), the guide plate (5) slidingly and sealingly cooperating with the inner wall of the valve cavity (11); a water supply inlet (12), a water supply outlet (13), a return water inlet (14) and a return water outlet (15) connected to the valve cavity (11) are evenly arranged around the outer circumference of the valve body (1); the characteristics are as follows: The deflector (5) comprises a main body (51) arranged on the outer periphery of the rotating shaft (4), and two plate-shaped wings (52) formed integrally with the main body (51), the two wings (52) being arranged at an angle of 180 degrees; the deflector (5) has an arc-shaped deflection surface (53) extending from the main body (51) to the wings (52); In the circumferential direction of the valve cavity (11), the openings of the water supply outlet (13) and the return water outlet (15) are relatively large; in the axial direction of the valve cavity (11), the openings of the water supply outlet (13) and the return water outlet (15) are relatively small; The openings of the water supply outlet (13) and the water return outlet (15) are both hexagonal, and a drainage surface (111) is provided at the vertex of the hexagonal opening in the circumferential direction of the valve cavity (11), and the drainage surface (111) is respectively connected to the two surfaces forming the vertex; The bottom surface of the valve cavity (11) is provided with a second countersunk hole (110) which is rotatably matched with the rotating shaft (4).

2. The automatic regulating reflux four-way valve according to claim 1, characterized in that: The valve chamber (11) is cylindrical.

3. The automatic regulating reflux four-way valve according to claim 2, characterized in that: The valve body (1) further comprises a valve cover (2), wherein the valve cover (2) is sealingly connected to the valve body (1) via a flange connection (3); a through hole (22) is provided on the valve cover (2), and the rotating shaft (4) extends from the through hole (22) into the valve cavity (11), and the rotating shaft (4) and the through hole (22) are sealingly matched.

4. The automatic regulating reflux four-way valve according to claim 3, characterized in that: The flange connection member (3) comprises a first flange (31) fixedly mounted on the valve body (1), and a second flange (32) fixedly mounted on the valve cover (2), the second flange (32) being provided with a plurality of external threaded holes (32a), the first flange (31) being provided with threaded grooves (31a) corresponding one to each of the external threaded holes (32a), and external fastening bolts being installed between the external threaded holes (32a) and the threaded grooves (31a) belonging to the same pair; The valve cover (2) has a protruding column (21) extending into the valve cavity (11); the protruding column (21) and the inner wall of the valve cavity (11), as well as the guide plate (5) and the protruding column (21) are slidably and sealingly matched.

5. The automatic regulating reflux four-way valve according to claim 4, characterized in that: The first flange (31) is integrally formed with the valve body (1), the second flange (32) is integrally formed with the valve cover (2), and the through hole (22) passes through the second flange (32).

6. The automatic regulating reflux four-way valve according to claim 4, characterized in that: The second flange (32) has a first countersunk hole (32b) on the side facing away from the valve body (1) and located on the outer periphery of the through hole (22), and a plurality of internal thread grooves (32c) arranged along the circumference of the second flange (32), wherein the countersunk hole and the internal thread grooves (32c) are used to install a driving mechanism for driving the rotating shaft (4) to rotate.

7. A water mixing center for automatically adjusting backflow, comprising a water mixer (100), a water distributor (300) connected to a water supply outlet (13) of the water mixer (100), and a water collector (400) connected to a return water inlet (14) of the water mixer (100); characterized in that: The water mixer (100) is an automatic regulating reflux four-way valve as claimed in any one of claims 1 to 6, and the water outlet end of the water collector (400) is also provided with a temperature sensor (600) for detecting the return water temperature, and the rotating shaft (4) in the automatic regulating reflux four-way valve is connected to a driving mechanism, and the driving mechanism and the temperature sensor (600) are both connected to a controller.

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