A three-way rotary joint with controllable passage

Abstract

The present invention discloses a three-way rotary joint with controllable passage, comprising a rotary body assembly, a rotary body seat, and a three-way body, wherein the rotary body seat forms a wrapping around the outer periphery of the rotary body assembly and is integrally embedded in the mounting hole of the three-way body; the rotary body assembly comprises a rotary body and three annular grid rings distributed on the outer periphery of the rotary body, and two adjacent groups of grid rings and the inner wall where the rotary body seat is located form an independent area; the outer wall where the rotary body seat is located is provided with multiple groups of second outlets, and a one-way valve component is provided on each group of second outlets, and the positional deflection of the rotary body assembly and the rotary body seat is adjusted by circular motion, so that the medium fluid passes through different passages of the first outlet where the rotary body assembly is located, and is unidirectionally output from the second outlet of the corresponding rotary body seat. The three-way rotary joint adopted in this device can complete the circulation switching of different medium outlets, thereby realizing the flexible switching of the three-way between single-channel transmission and dual-channel simultaneous transmission of the medium, meeting different application scenarios.

Description

Technical Field

[0001] The invention belongs to the technical field of three-way connecting pieces, and in particular relates to a three-way rotary joint with controllable passage. Background Art

[0002] Three-way joints are widely used in the field of fluid transportation and can be used to transport media for passages in any two directions. When a passage in a tee needs to be cut off, a two-way joint is usually used instead of a three-way joint, which increases the cost of parts interchangeability and reduces work efficiency; when both passages in a tee need to be cut off, two valves are generally used to control the opening and closing of the passages respectively, which also increases the cost of use and has a complex structure. When the part connected to the main three-way passage is a rotating part, that is, a three-way rotary joint, the above defects are more significant. Existing three-way rotary joints have the disadvantages of being unable to flexibly switch the opening and closing of branches, easy gas leakage between the two branches, and poor sealing.

[0003] like Figure 1 As shown, a typical three-way rotary joint in the prior art includes a three-way main body and a rotating body. The rotating body is placed in the three-way main body. When the rotating body rotates, the medium enters the rotating body from the inlet and flows to the outlet A or outlet B through the outlet C, which better realizes the switching function between different outlets. In addition, a Gly ring is used outside the rotating body to seal the medium and provide a contact surface for the rotation of the rotating body, thereby enhancing the wear resistance between the parts. This typical structure is widely used in the field of connecting stationary parts with rotating parts.

[0004] from Figure 1 It can be seen that the rotating body of a typical three-way rotary joint has only one medium outlet C. During the rotation of the rotating body, since outlet C can only effectively transport the medium to one of outlets A or B, the function of the three-way joint cannot be well realized. In addition, outlets A and B are in a passage state. When one of the outlets transports the medium, the other outlet has a medium leakage problem. In applications where outlet A or outlet B transports the medium alone, or both outlets transport the medium at the same time, and in fields with high sealing requirements, the defects of the typical three-way rotary joint are more significant. Based on this, there is a demand for improvement in the structure of the typical three-way rotary joint. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a three-way rotary joint with controllable passage, which solves the above-mentioned technical problems existing in the prior art.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A three-way rotary joint with controllable passage, comprising a rotary body assembly, a rotary body seat, and a three-way body.

[0008] The rotating body assembly is a cylindrical structure with an open top;

[0009] The rotating body seat wraps the outer periphery of the rotating body assembly and is integrally embedded in the mounting hole of the tee body;

[0010] The rotating body assembly includes a rotating body and three annular grid rings distributed around the rotating body. The outer wall of the rotating body is provided with multiple groups of first outlets connected to the outside. Two adjacent groups of grid rings and the inner wall of the rotating body seat form independent areas for the passage of the first outlets, and the first outlets are deflected in multiple directions.

[0011] The outer wall where the rotating body seat is located is provided with multiple groups of second outlets, and a one-way valve is provided on each group of second outlets. The positional deflection of the rotating body assembly and the rotating body seat is adjusted by circular motion to specify that the first outlet and the second outlet are in the same horizontal direction and are uniquely matched, so that the medium fluid passes through different passages of the first outlet where the rotating body assembly is located and is output in one direction from the second outlet of the corresponding rotating body seat.

[0012] Furthermore, the three-way body is a hollow cavity structure with an open top, and a cover plate is provided at the open opening position, and main outlets are respectively provided at the two side edges;

[0013] The outer edge of the upper opening of the tee body and the lower joint position of the cover plate are respectively provided with an annular groove, and an O-ring is filled in the annular groove to seal the joint portion of the upper opening of the cover plate and the tee body;

[0014] The medium fluid enters from the rotating body assembly through the main outlet and is discharged from the main outlet.

[0015] Furthermore, a retaining ring and a bearing seat are provided at the bottom of the rotating body assembly; at the same time, a protrusion protrudes downward from the lower end of the central axis where the rotating body is located, so that the bearing seat wraps the outer periphery of the protrusion, so that the rotating body and the rotating body seat rotate relative to each other along the central axis direction, and the retaining ring is located below the protrusion to limit the lower end surface of the bearing seat;

[0016] At the same time, a bearing end cover is arranged at the bottom where the rotating body seat is located, and the bearing end cover forms a bottom cover for the raised part of the rotating body; an O-ring is arranged between the bearing end cover and the rotating body seat to form a seal.

[0017] Furthermore, an annular positioning groove is provided on the outer periphery of the end portion of the rotating body assembly extending out of the upper end surface of the tee body;

[0018] At the same time, a positioning assembly is arranged on the upper end surface of the cover plate of the tee body, and the positioning assembly includes a positioning shell, a positioning plunger and a spring member. The end of the positioning shell is fixed to the cover plate of the tee body, and the front end surface is arranged in a blind hole shape. A spring member is arranged in the blind hole of the positioning shell, and the front end of the spring member extends out and is connected with the positioning plunger. The positioning plunger is pushed and squeezed forward by the spring member, so that the annular positioning groove on the outer periphery of the rotating body assembly is locked in the annular direction.

[0019] Furthermore, a plurality of positioning holes are provided on the annular surface of the annular positioning groove, and each group of the positioning holes is in the same vertical plane as the extension direction of the first outlet which is uniquely designated below, and corresponds one to one;

[0020] At the same time, the front end of the positioning plunger is set as a protrusion protruding outward, and when the annular positioning groove of the rotating body assembly is deflected, the front end surface protrusion of the positioning plunger is embedded and relatively fixed with the positioning hole of the annular positioning groove.

[0021] Furthermore, at least three groups of first outlets are arranged on the rotating body, wherein the first outlets are equally spaced from the top projection surface where the rotating body is located.

[0022] The first outlet located at the bottom of the rotating body is a left-right through-type structure.

[0023] Furthermore, the one-way valve comprises a valve body, a valve core and a one-way valve spring, the upper end of the valve body is a cap structure, the lower end is a protruding pin, a gap is reserved between adjacent pins, and the valve core is pushed outward by the one-way valve spring built into the cap of the valve body;

[0024] The valve core forms a blockage for the second outlet on the outer wall of the rotating body seat under the pressure of the one-way valve spring;

[0025] When the first outlet is deflected and adapted to the second outlet, the medium fluid enters the second outlet through the first outlet and squeezes and ejects the valve core, so that the medium fluid flows out from the main outlet in one direction after overflowing from the second outlet.

[0026] Furthermore, the outer side of the second outlet is conical, the inner side is circular, and the outer end surface of the first outlet is an arc surface;

[0027] The inner circular hole of the second outlet has the same diameter as the first outlet, and the outer conical hole of the second outlet is matched with the conical surface of the front end of the valve core.

[0028] Furthermore, rectangular grooves are provided on both left and right sides of the rotating body seat; at the same time, a partition piece is vertically provided in the middle of the cavity of the tee body, and the outer side of the rectangular groove of the rotating body seat is fixed by multiple groups of partition pieces.

[0029] Furthermore, the second outlet is arranged on the outer wall of the rotating body seat and is arranged in a bilaterally symmetrical manner.

[0030] Beneficial effects of the present invention:

[0031] 1. The three-way rotary joint used in this device can complete the flow switching of different media outlets, thereby realizing the flexible switching of the three-way between single-channel delivery and dual-channel simultaneous delivery of media, meeting different application scenarios.

[0032] 2. The device uses multiple groups of Gley rings to isolate multiple second outlets from each other, and the multiple second outlets are staggered and arranged in different directions. By arranging equally spaced annular grooves outside the rotating body, the space is effectively utilized and the compactness of the assembly is improved.

[0033] 3. The three-way structure adopted in this device is a cavity structure, and its upper part is assembled with a detachable cover plate, which is convenient for rapid assembly and maintenance between it and the rotating body assembly and the rotating body seat.

[0034] 4. This device is provided with a one-way valve on the second outlet where the rotating body seat is located, which can independently realize the one-way transmission of the medium fluid from the rotating body assembly to the main outlet of the three-way body, ensuring the stability during the transmission process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0036] Figure 1 It is a schematic diagram of the structure of a typical three-way rotary joint in the prior art;

[0037] Figure 2 is a schematic diagram of the general assembly appearance of an embodiment of the present invention;

[0038] Figure 3 is a schematic top view of the final assembly of an embodiment of the present invention;

[0039] Figure 4 is a schematic diagram of the overall cross-sectional structure of an embodiment of the present invention;

[0040] Figure 5 The embodiment of the present invention Figure 4 Schematic diagram of the partial structure at A in the middle;

[0041] Figure 6 2 is a schematic diagram of the overall structure of a tee body according to an embodiment of the present invention;

[0042] Figure 7 The embodiment of the present invention Figure 6Schematic diagram of the partial structure at B in the middle;

[0043] Figure 8 is a schematic diagram of the overall structure of a rotating body assembly according to an embodiment of the present invention;

[0044] Fig. 9 It is a schematic diagram of the overall structure of the rotating body seat according to an embodiment of the present invention;

[0045] Fig.10 1 is a schematic structural diagram of the connection state between the rotating body seat and the one-way valve according to an embodiment of the present invention;

[0046] Fig.11 1 is a schematic diagram of the overall structure of a one-way valve according to an embodiment of the present invention;

[0047] Fig.12 is a schematic diagram of a cross-sectional structure of a one-way valve according to an embodiment of the present invention;

[0048] Fig.13 is a schematic diagram of the overall structure of a positioning component according to an embodiment of the present invention;

[0049] Fig.14 It is a schematic diagram of the cross-sectional structure of the positioning component of an embodiment of the present invention. DETAILED DESCRIPTION

[0050] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] like Figure 2-4 As shown, an embodiment of the present invention provides a three-way rotary joint with controllable passage, including a rotary body assembly 1, a rotary body seat 2, and a three-way body 3.

[0052] like Figure 8 As shown, the rotating body assembly 1 is a cylindrical structure with an open top; it includes a rotating body 11 and a plurality of grid rings 12 distributed on the periphery of the rotating body 11 and arranged in a ring-shaped manner at equal intervals in the vertical direction (in the present application, a first grid ring, a second grid ring, and a third grid ring are provided, and are arranged in sequence from top to bottom, and of course, additional grid rings can be provided according to actual needs). At this time, the grid rings 12 are all embedded in the annular ring of the outer wall of the rotating body 11 to form a relative fixation for the grid rings 12.

[0053] The rotating body seat 2 wraps around the outer periphery of the rotating body assembly 1 and is integrally embedded in the mounting hole of the tee body 3 .

[0054] The outer wall of the rotating body 11 of the rotating body assembly 1 is provided with three groups of first outlets 13 connected to the outside. Two adjacent groups of grid circles 12 and the inner wall of the rotating body seat 2 form an independent area for the passage of the first outlets 13. The first outlets 13 are deflected to three different directions (in order to ensure that the relative heights of the two adjacent groups of grid circles 12 are fixed, the outer periphery of each group of grid circles 12 is wrapped in a convex ring on the outer wall of the rotating body 11, and the grid circles 12 are tightly wrapped by the convex ring), and are evenly spaced in different projection directions, that is, the angle between them is 120 degrees, so that adjustment of angles in multiple directions can be achieved. The first outlets 13 wrapped by the two adjacent groups of grid circles 12 are in an independent state. Therefore, when transmitting different medium fluids, the first outlets 13 between the two adjacent groups do not interfere with each other. By adjusting the position of the grid circles 12, the flow path of the fluid or material can be changed, thereby increasing the flexibility of the component.

[0055] The first outlet 13 is outlet A' on the outer wall of the rotating body 11 between the first grid circle and the second grid circle, and the first outlet 13 is outlet B' on the outer wall of the rotating body 11 between the second grid circle and the third grid circle. At this time, the outer end faces where outlets A' and B' are located are arc-shaped surfaces, and the curvature of the arc-shaped surfaces is mutually adapted to the inner wall where the rotating body seat 2 is located, thereby reducing the possibility of scratching against the inner wall where the rotating body seat 2 is located during deflection.

[0056] The included angle of the two first outlets 13, outlet A' and outlet B', in the top projection plane is 120 degrees. At the same time, two circular outlets C' and outlet D' are symmetrically arranged on the left and right between the third Gray ring and the bottom of the rotating body 11 (outlet C' and outlet D' together form the first outlet 13 located at the bottom). At this time, the included angles of outlet C' and outlet A', and outlet C' and outlet B' in the top projection plane are all 60 degrees, that is, the included angles of the three groups of first outlets 13 in the projection direction are equal.

[0057] For easy identification, at this time, the outer periphery of the end of the rotating body 11 of the rotating body assembly 1 extending out of the upper end surface of the tee body 3 is provided with an annular positioning groove 103, and the words "A'", "B'", "C'" and "D'" are etched on the annular positioning groove 103 for easy identification. The word "A'" is located directly above the outlet A' of the rotating body 11, the word "B'" is located directly above the outlet B' of the rotating body 11, the word "C'" is located directly above the outlet C' of the rotating body 11, and the word "D'" is located directly above the outlet D' of the rotating body 11. Therefore, when the lower part of the rotating body 11 is completely placed in the inner cavity of the tee body 3 (the position cannot be seen by the naked eye), the outlet direction can also be identified and adjusted through the identification mark on the annular positioning groove 103.

[0058] like Figure 5As shown, a retaining ring 101 and a bearing seat 102 are provided at the bottom of the rotating body 11 of the rotating body assembly 1; the rotating body assembly 1 is rotated along the central axis direction of the rotating body seat 2. In order to ensure the accuracy of rotation, a protrusion 111 protrudes downward at the lower end of the central axis of the rotating body 11, and the protrusion 111 is adapted to be connected with the bearing seat 102 provided at the bottom of the rotating body seat 2 (that is, the whole passes through the central through hole where the bearing seat 102 is located, and the outer part where the bearing seat 102 is located is integrally fixed to the bottom of the rotating body seat 2), thereby forming a relative rotation between the two components, and the retaining ring 101 as a whole also presents a ring structure. When the protrusion 111 passes through the middle through hole of the bearing seat 102, the retaining ring 101 forms a locking of the front end of the protrusion 111 in the vertical direction, that is, the rotating body 11 where the protrusion 111 is located can perform a circular axis rotation movement at the center of the bearing seat 102.

[0059] A bearing end cover 201 is provided at the bottom where the rotating body seat 2 is located, and the bearing end cover 201 forms a bottom cover for the raised portion 111 of the rotating body 11. At the same time, the inner ring of the bearing is fixed by using a shaft shoulder above the bearing seat 102 and a retaining ring 101 below. And by providing annular grooves with equal spacing outside the rotating body 11, the space is effectively utilized and the compactness of the assembly is improved.

[0060] At this time, in order to improve the sealing cover effect of the bearing end cover 201 on the bearing seat 102, a second annular groove 113 is opened on the bottom annular surface where the rotating body seat 2 is located, and the opening surface is downward, and at the same time, the same second annular groove 113 is opened on the upper end surface of the bearing end cover 201 below, and the opening surface is upward, so that the calibers of the two groups of second annular grooves 113 are the same, so that when the bearing end cover 201 is adapted and connected to the bottom of the bearing seat 102, the two groups of second annular grooves 113 form a space for accommodating the O-ring 112, ensuring the sealing performance of the bearing end cover 201 connecting and covering the bottom of the bearing seat 102, that is, the bearing seat 102 wrapped by the bearing end cover 201 is in a relatively closed and independent area, reducing external influences, thereby improving the service life of the overall bearing seat 102.

[0061] like Fig. 9As shown, the outer wall where the rotating body seat 2 is located is provided with multiple groups of second outlets 21 (the second outlets 21 are arranged on the outer wall of the rotating body seat 2 and are arranged symmetrically on the left and right), and a one-way valve 4 is arranged on each group of second outlets 21. The position of the rotating body assembly 1 and the rotating body seat 2 is adjusted by circular motion to achieve that the designated first outlet 13 and the second outlet 21 are in the same horizontal direction and are uniquely matched, that is, the second outlet 21 opened on the front of the rotating body seat 2 is recorded as outlet A, at this time, the outer side of outlet A is a conical hole and the inner side is a circular hole, and the position of outlet A is in the same horizontal plane as outlet A' (the word "A" is etched on the side of outlet A), that is, when the rotating body 11 where outlet A' is located rotates, the outlet and outlet A' can be adapted to each other.

[0062] Similarly, a second outlet 21 (denoted as outlet B) is opened in the middle of the back side of the rotating body seat 2. The shape and size of outlet B are the same as those of outlet A, and the position of outlet B is in the same horizontal plane as outlet B' (outlet B and outlet A are at different heights), and the word "B" is etched on the side of outlet B.

[0063] A second outlet 21 is provided directly below the outlet A of the rotating body seat 2 and is denoted as outlet D. The shape and size of outlet D are the same as those of outlet A, and the position of outlet D is in the same horizontal plane as outlet D' of the rotating body 11 (the word "D" is etched on the side of outlet D). At the same time, an outlet C is coaxially penetrated on the other side of outlet D (the word "C" is etched on the side of outlet C).

[0064] like Fig.10 As shown, a one-way valve 4 is provided on each second outlet 21 (i.e., outlet A, outlet B, outlet C, and outlet D) of the rotating body seat 2, so that the medium fluid passes through different passages of the first outlet 13 where the rotating body assembly 1 is located, and is output in one direction from the corresponding second outlet 21 of the rotating body seat 2.

[0065] At least three groups of first outlets 13 are disposed on the rotating body 11 , wherein the angle between each two of the first outlets 13 and the top projection plane where the rotating body 11 is located is 120 degrees.

[0066] The first outlet 13 located at the bottom of the rotating body 11 is a left-right through-type structure. This structure can realize simultaneous discharge of materials from the left and right first outlets 13, thereby increasing the discharge flow rate.

[0067] like Figure 6 , Figure 7 As shown, the tee body 3 is a hollow structure with an open top, and a cover plate 31 is provided at the open top opening position, through which the cover plate 31 forms an open cover for the open top of the tee body 3, and main outlets 32 are respectively provided at its two outer ends for the outflow of medium fluid.

[0068] A first annular groove 301 is respectively provided at the outer edge of the upper opening of the tee body 3 and the lower connecting position of the cover plate 31, and the first annular groove 301 is filled with an O-ring 112 (the first annular groove 301 adopts a structural design similar to that of the second annular groove 113 to ensure the sealing when fixed by the O-ring 112), so that the cover plate 31 and the upper opening connecting portion of the tee body 3 are sealed and tightly fitted, and at the same time, an O-ring 112 is also provided at the middle opening position of the cover plate 31 for sealing the connection with the rotating body seat 2, that is, when the rotating body seat 2 is fixed through the middle opening position of the cover plate 31, the gap at the connecting position with the rotating body seat 2 is filled by the O-ring 112 provided in the middle of the cover plate 31.

[0069] like Fig.13 , Fig.14 As shown, a positioning assembly 5 is provided on the upper end surface of the tee body 3, and the positioning assembly 5 includes a positioning shell 51, a positioning plunger 52 and a spring member 53. The end of the positioning shell 51 is fixed to the upper end surface of the tee body 3 (the end position can be fixed to the upper surface of the cover plate 31 of the tee body 3 by a bolt hole connection method), and its front end surface is arranged in a blind hole shape. A spring member 53 is arranged in the blind hole of the positioning shell 51, and the front end of the spring member 53 extends outward and is connected to the positioning plunger 52 (usually, the positioning plunger 52 extends outward under the action of the spring member 53), that is, the positioning plunger 52 is pushed and squeezed forward by the spring member 53, so as to form a locking of the annular positioning groove 103 on the outer periphery of the rotating body assembly 1 in the annular direction (in order to ensure the firmness of the locking, the positioning assembly 5 can be symmetrically arranged in two groups, and locked and fixed from both sides).

[0070] At this time, "A'", "B'", "C'" and "D'" are etched on the annular positioning groove 103 of the rotating body 11, and are all set as positioning holes 104. At this time, each group of positioning holes 104 is in the same vertical plane as the extension direction of the only designated first outlet 13 below, and corresponds one to one; at the same time, the front end of the positioning plunger 52 is set as a protrusion protruding outward, and when the annular positioning groove 103 of the rotating body assembly 1 is deflected, the front end face protrusion of the positioning plunger 52 is embedded and relatively fixed with the positioning hole 104 of the annular positioning groove 103. When the rotating body 11 needs to be rotated, at this time, the front end of the positioning plunger 52 is relatively fixed with the embedded positioning hole 104, thereby forming a relative fixation with the annular positioning groove 103, that is, the second outlet 21 where the rotating body seat 2 is located and the first outlet 13 where the rotating body assembly 1 is located are matched with each other.

[0071] like Fig.11 , Fig.12As shown, the one-way valve 4 includes a valve body 41, a valve core 42 and a one-way valve spring 43. The upper end of the valve body 41 is a cap structure, and the lower end is a protruding pin. A gap is reserved between adjacent pins. The valve core 42 is pushed outward by the one-way valve spring 43 built into the cap of the valve body 41.

[0072] The valve core 42 blocks the second outlet 21 on the outer wall of the rotating body seat 2 under the pressure of the one-way valve spring 43. At this time, the bottom of the valve core 42 is conical, and the cone contacts the outer conical hole of the rotating body seat 2 to form a blockage.

[0073] The outer side of the second outlet 21 is conical and the inner side is circular, and the inner circular hole of the second outlet 21 has the same diameter as the first outlet 13, and the outer conical hole of the second outlet 21 is adapted to the conical surface of the front end of the valve core 42. When this structure is in use, when the valve core 42 is squeezed by the one-way valve spring 43, its front end can be well adapted to the outer conical surface of the second outlet 21, and then when the medium fluid overflows from the second outlet 21, the valve core 42 is ejected (out of contact with the second outlet 21) under the action of pressure, thereby enabling the medium fluid to flow out from the gap between the second outlet 21 and the valve core 42.

[0074] When one group of the first outlet 13 and the second outlet 21 are deflected and adapted (and when one group of the first outlet 13 and the second outlet 21 are adapted and connected, the other first outlet 13 and the second outlet 21 are in a non-adapted and connected state), the medium fluid enters the second outlet 21 through the first outlet 13, and forms an extrusion and ejection of the valve core 42, so that the medium fluid overflows from the second outlet 21 and flows out from the main outlet 32.

[0075] Rectangular grooves 202 are provided on both the left and right sides of the rotating body seat 2; at the same time, a partition member 302 is vertically provided in the middle of the cavity of the tee body 3, and the outer side of the rectangular groove 202 of the rotating body seat 2 is fixed by multiple groups of partition members 302.

[0076] Working principle:

[0077] When one of the main outlets 31 of the three-way needs to convey the medium, the rotating body 11 is rotated so that the outlet B' (i.e., the first outlet 13) of the rotating body 11 coincides with the outlet B (i.e., the second outlet 21) of the rotating body seat 2. At this time, the rotating body 11 of the rotating body positioning assembly 1 slides in the rotating body positioning groove to the corresponding positioning point (so that the corresponding outlet B' coincides with the outlet B), realizing the circumferential positioning of the rotating body 11. When the pressure of the medium fluid (of course, it can also be medium gas as needed, both of which are within the protection scope of the present application) reaches a certain level, the one-way valve 4 core covering the outlet B (i.e., the second outlet 21) of the rotating body seat 2 is lifted, and the valve core 42 of the one-way valve 4 squeezes the second one-way valve spring 43, thereby breaking away from the blockage of the outlet B (the second outlet 21), forming a medium passage for the medium fluid to enter from the upper inlet of the rotating body 11 → outlet B' of the rotating body 11 → outlet B of the rotating body seat 2 → main outlet 31 of the three-way body 3. Since the one-way valve 4 can only form a one-way passage and the other outlets located on the rotating body 11 and the rotating body seat 2 (i.e., the remaining first outlet 13 and the second outlet 21 are not matched) are well sealed, the single-channel transportation of the medium fluid is completed.

[0078] Similarly, when the other set of main outlets 31 of the three-way valve is needed to transport medium fluid, the rotating body 11 is rotated so that the outlet A' of the rotating body 11 coincides with the outlet A (i.e., the second outlet 21) of the rotating body seat 2. When the pressure of the medium fluid transport reaches a certain level, the valve core 42 of the one-way valve 4 covering the outlet A (i.e., the second outlet 21) is lifted, and the valve core 42 of the one-way valve 4 squeezes the second one-way valve spring 43, thereby breaking away from the blockage of the outlet B (the second outlet 21), forming a medium passage for the medium fluid to enter from the upper inlet of the rotating body 11 → outlet A' of the rotating body 11 → outlet A of the rotating body seat 2 → main outlet 31 of the three-way body 3, thereby completing the single-channel transport of the medium fluid.

[0079] When two sets of three-way main outlets 31 are required to transport medium fluid at the same time, the rotating body 11 is rotated to make the outlet C' (i.e., the first outlet 13) on the rotating body 11 coincide with the outlet C (i.e., the second outlet 21) of the rotating body seat 2. Since the outlet C and the outlet D are symmetrically arranged, the outlet D' of the rotating body 11 and the outlet D of the rotating body seat 2 are automatically coincident at this time. When the pressure of the transported medium reaches a certain level, the valve core 42 of the one-way valve component 4 located at the outlet C and the outlet D is lifted, and the valve core 42 of the one-way valve 4 squeezes the second one-way valve spring 43, thereby breaking away from the blockage of the outlet B (the second outlet 21), forming a medium double passage of the medium fluid entering from the upper inlet of the rotating body 11 → outlet C' → outlet C → main outlet 31; synchronous inlet → outlet D' → outlet D → main outlet 31.

[0080] Different media outlets are spatially staggered on the rotating body 11, and a media outlet corresponding to the rotating body 2 is set on the rotating body seat 2. By rotating the rotating body 11, the media outlets of the rotating body 11 and the rotating body seat 2 are overlapped, thereby realizing flexible switching of the three-way between single-channel conveying and dual-channel simultaneous conveying of media, meeting different application scenarios.

[0081] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A three-way rotary joint with controllable passage, comprising a rotary body assembly (1), a rotary body seat (2), and a three-way body (3), characterized in that: The rotating body assembly (1) is a cylindrical structure with an open top; The rotating body seat (2) wraps around the outer periphery of the rotating body assembly (1) and is integrally embedded in the mounting hole of the tee body (3); The rotating body assembly (1) comprises a rotating body (11) and three annular grid rings (12) distributed on the periphery of the rotating body (11); the outer wall of the rotating body (11) is provided with a plurality of groups of first outlets (13) communicating with the outside; two adjacent groups of grid rings (12) and the inner wall of the rotating body seat (2) form an independent area for the first outlets (13) to pass through; and the plurality of first outlets (13) are arranged to deflect in a plurality of directions; The outer wall of the rotating body seat (2) is provided with a plurality of groups of second outlets (21), and a one-way valve (4) is provided on each group of the second outlets (21). The deflection of the rotating body assembly (1) and the rotating body seat (2) is adjusted by circular motion, so that the first outlet (13) and the second outlet (21) are deflected in the same horizontal direction and are uniquely matched, so that the medium fluid passes through different passages of the first outlet (13) of the rotating body assembly (1) and is unidirectionally output from the corresponding second outlet (21) of the rotating body seat (2); The three-way body (3) is a hollow structure with an open top, a cover plate (31) is provided at the open opening, and main outlets (32) are provided at both side edges. A first annular groove (301) is respectively formed at the outer edge of the upper opening of the tee body (3) and the lower junction position of the cover plate (31), and an O-type sealing ring (112) is filled in the first annular groove (301) to seal the junction portion between the cover plate (31) and the upper opening of the tee body (3); A medium fluid enters from the rotating body assembly (1) through the main outlet (32) and is discharged from the main outlet (32); At least three groups of first outlets (13) are arranged on the rotating body (11), wherein the first outlets (13) are arranged at equal intervals from the top projection surface of the rotating body (11); The first outlet (13) located at the bottom of the rotating body (11) is a left-right through-type structure; The one-way valve (4) comprises a valve body (41), a valve core (42) and a one-way valve spring (43); the upper end of the valve body (41) is a cap structure, the lower end is a protruding pin, a gap is reserved between adjacent pins, and the valve core (42) is pushed outward by the one-way valve spring (43) built into the cap of the valve body (41); The valve core (42) blocks the second outlet (21) on the outer wall of the rotating body seat (2) under the pressure of the one-way valve spring (43); When the first outlet (13) and the second outlet (21) are deflected and adapted, the medium fluid enters the second outlet (21) through the first outlet (13) and forms an extrusion and ejection of the valve core (42), so that the medium fluid overflows the second outlet (21) and flows out from the main outlet (32) in one direction; The outer side of the second outlet (21) is conical, the inner side is circular, and the outer end surface of the first outlet (13) is an arc-shaped surface; The inner circular hole of the second outlet (21) has the same diameter as the first outlet (13), and the outer conical hole of the second outlet (21) is adapted to the conical surface of the front end of the valve core (42); The left and right sides of the rotating body seat (2) are provided with rectangular grooves (202); at the same time, a partition plate (302) is vertically provided in the middle of the cavity of the tee body (3), and the outer side of the rectangular groove (202) of the rotating body seat (2) is fixed by multiple groups of partition plates (302); The second outlet (21) is arranged on the outer wall of the rotating body seat (2) and is arranged in a bilaterally symmetrical manner.

2. The three-way rotary joint with controllable passage according to claim 1, characterized in that: A retaining ring (101) and a bearing seat (102) are provided at the bottom of the rotating body assembly (1); at the same time, a protrusion (111) protrudes downward from the lower end of the central axis where the rotating body (11) is located, so that the bearing seat (102) wraps around the outer periphery of the protrusion (111) to form a relative rotation of the rotating body (11) and the rotating body seat (2) along the central axis. The retaining ring (101) is located below the protrusion (111) to limit the lower end surface of the bearing seat (102); At the same time, a bearing end cover (201) is arranged at the bottom of the rotating body seat (2), and the bearing end cover (201) forms a bottom cover for the raised portion (111) of the rotating body (11); an O-type sealing ring (112) is arranged between the bearing end cover (201) and the rotating body seat (2) to form a seal.

3. The three-way rotary joint with controllable passage according to claim 1, characterized in that: An annular positioning groove (103) is provided on the outer periphery of the end portion of the rotating body assembly (1) extending out of the upper end surface of the tee body (3); At the same time, a positioning assembly (5) is arranged on the upper end surface of the cover plate (31) of the three-way body (3), and the positioning assembly (5) comprises a positioning shell (51), a positioning plunger (52) and a spring member (53). The end of the positioning shell (51) is fixed to the cover plate (31) of the three-way body (3), and the front end surface is arranged in a blind hole shape. The spring member (53) is arranged in the blind hole of the positioning shell (51), and the front end of the spring member (53) extends out and is connected to the positioning plunger (52). The positioning plunger (52) is pushed and squeezed forward by the spring member (53), thereby locking the annular positioning groove (103) on the outer periphery of the rotating body assembly (1) in the annular direction.

4. The passage-controllable three-way rotary joint according to claim 3, characterized in that: A plurality of positioning holes (104) are provided on the annular surface of the annular positioning groove (103), and each group of the positioning holes (104) and the extending direction of the only designated first outlet (13) below are located in the same vertical plane and correspond one to one; At the same time, the front end of the positioning plunger (52) is configured as a protrusion protruding outward, and when the annular positioning groove (103) of the rotating body assembly (1) is deflected, the front end surface protrusion of the positioning plunger (52) and the positioning hole (104) of the annular positioning groove (103) are embedded and relatively fixed.

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