Change-over valve

Abstract

A change-over valve comprises a valve body, a valve element and a valve deck assembly, the valve body comprises a valve element cavity with an opening, a first water inlet pipeline, a second water inlet pipeline, a first water return pipeline and a second water return pipeline, and the straight line where the first water inlet pipeline and the second water return pipeline are located is perpendicular to the straight line where the second water inlet pipeline and the first water return pipeline are located. The first water inlet pipeline, the second water inlet pipeline, the second water return pipeline and the first water return pipeline are arranged around the valve element cavity and communicate with the valve element cavity. The valve element is in a kidney shape and is provided with a valve rod, the valve element is rotationally matched with the valve element cavity, the valve deck assembly covers the open end of the valve element cavity, one end of the valve element is rotationally matched and sealed with the closed end of the valve element cavity, the other end of the valve element is rotationally matched and sealed with the valve deck assembly, and the valve rod is rotationally matched with the valve deck assembly. The heat exchange device and the main pipeline are connected in series or disconnected, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat pump device, especially a conversion valve of a heating terminal. BACKGROUND

[0002] The prior art, Chinese patent 201710066870.2, a waterway reversing system for switching forward and reverse circulation directions, a water heating device and a heating method. The system comprises: a water distributor; a water collector connected with the water distributor; a temperature sensor installed on the water supply pipeline; a temperature sensor installed on the return water pipeline; a waterway reversing device for switching the water supply pipeline to be connected with the water distributor or the water collector according to the water temperature, and switching the return water pipeline to be connected with the water collector or the water distributor according to the water temperature. The problem is that: only electric control can be used, and manual conversion cannot be realized. SUMMARY

[0003] The utility model aims at: provide a conversion valve, it has the characteristic that manual switching waterway.

[0004] The utility model is realized in this way: a conversion valve, which is characterized by comprising a valve body, a valve core and a valve cover assembly,

[0005] The valve body comprises a valve core cavity with an opening, a first water inlet pipeline, a second water inlet pipeline, a first water return pipeline and a second water return pipeline, the straight line where the first water inlet pipeline and the second water return pipeline are located is perpendicular to the straight line where the second water inlet pipeline and the first water return pipeline are located, the first water inlet pipeline, the second water inlet pipeline, the second water return pipeline and the first water return pipeline are arranged around the valve core cavity and are in communication with the valve core cavity;

[0006] The valve core is waist-shaped and is provided with a valve rod,

[0007] The valve core is rotationally connected with the valve core cavity, the valve cover assembly covers the opening end of the valve core cavity, one end of the valve core is rotationally connected with the closed end of the valve core cavity and is sealed, the other end is rotationally connected with the valve cover assembly and is sealed, and the valve rod is rotationally connected with the valve cover assembly.

[0008] The conversion valve is characterized in that the valve cover assembly comprises a cover plate and a valve cover,

[0009] The cover plate is provided with an external thread cylindrical seat, and the valve cover comprises an internal thread cavity and a valve rod passage;

[0010] The cover plate is attached to the valve body and is sealed, the internal thread cavity is screwed with the external thread cylindrical seat, the valve rod is rotationally connected with the external thread cylindrical seat and is sealed, and the valve rod is rotationally connected with the valve rod passage; one end of the valve core is rotationally connected with the cover plate and is sealed.

[0011] The conversion valve is characterized in that the opening end of the valve core cavity is provided with a counterbore, and further comprises a sealing ring;

[0012] The sealing ring is arranged in the counterbore, and the cover plate presses the sealing ring.

[0013] The conversion valve further comprises a sealing sleeve, and the sealing sleeve is provided with a flange.

[0014] The sealing sleeve is inserted into the externally-threaded cylindrical seat, the flange is attached to the end of the externally-threaded cylindrical seat, and the valve cover presses the flange.

[0015] The conversion valve further comprises a sealing sleeve, and the sealing sleeve is provided with a flange.

[0016] The conversion valve further comprises a sealing sleeve, and the sealing sleeve is provided with a flange.

[0017] The conversion valve further comprises a water socket and a water plug.

[0018] The water socket is arranged in the inlet mounting hole and the outlet mounting hole, respectively, and the water plug and the water socket are detachably connected.

[0019] The conversion valve further comprises a sealing sleeve, and the sealing sleeve is provided with a flange.

[0020] The hollow seat shell is provided with a guide hole at the closed end.

[0021] The water guide seat plate comprises a fixed hole arranged at the center and an axial water guide hole surrounding the fixed hole.

[0022] The core fixing member comprises a core fixing rod and a core fixing valve.

[0023] The valve core seat comprises a body, a head, and a core fixing hole.

[0024] The head is slidably connected with the guide hole and the body is slidably connected with the inner cavity of the seat shell, and the pressure spring is arranged at the end of the body; the water guide seat plate is fixed in the open end of the seat shell, the core fixing rod passes through the core fixing hole, the pressure spring is fixed with the fixed hole, and the core fixing valve and the core fixing hole are sealed in the normal state.

[0025] The water plug comprises a head shell, a head water guide disc, a head spring, a head core member, and an externally-threaded joint.

[0026] The head shell is open at one end and comprises a head core hole arranged at the closed end.

[0027] The head water guide disc comprises a rod guide hole and a flow guide hole surrounding the rod guide hole.

[0028] The head core member comprises a head core, a core body, a movable core rod, and a stop disc.

[0029] The externally-threaded joint is provided with a connecting counterbore.

[0030] The head water guide disc is arranged in the connecting sink hole, the head core is in sliding fit and sealing with the head core hole, the movable core rod passes through the head spring and the rod guide hole, the stop disc cooperates with the head water guide disc to stop; the head spring cooperates with the head water guide disc and the core body part; the open end of the head shell is inserted into the connecting sink hole;

[0031] The head shell and the guide hole of the seat shell are inserted and detachable, the head shell drives the valve core seat, and the fixed valve core drives the head core part; the water connector and the water socket are communicated.

[0032] The speciality of the conversion valve is that the fixed valve core hole and the fixed valve core are respectively conical frustums.

[0033] The utility model discloses a conversion valve, because adopt such structure, realize heat exchange device and main pipeline series connection, or disconnect, convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is the sectional view of the utility model.

[0035] Figure 2 It is the A-A view of Figure 1

[0036] Figure 3 It is one of the three-dimensional exploded view of the utility model.

[0037] Figure 4 It is the second three-dimensional exploded view of the utility model.

[0038] Figure 5 It is the third three-dimensional exploded view of the utility model.

[0039] Figure 6 It is the sectional view of the water socket and the water plug of the utility model.

[0040] Figure 7 It is one of the three-dimensional exploded view of the water socket and the water plug of the utility model.

[0041] Figure 8 It is the second three-dimensional exploded view of the water socket and the water plug of the utility model. DETAILED DESCRIPTION

[0042] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.

[0043] ​In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term '' install '' '' link '' '' connect '' should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can be indirectly connected through the intermediate medium, can be two elements inside the intercommunication, for the ordinary skill in the art, the above-mentioned term can be understood in the utility model with the concrete meaning of specific situation.

[0044] As Figure 1 , Figure 2 A conversion valve, comprising a valve body 1, a valve core 2 and a valve cover assembly 3,

[0045] The valve body 1 includes a valve core cavity 11 with an opening, a first water inlet pipeline 121, a second water inlet pipeline 122, a first water return pipeline 131 and a second water return pipeline 132, the straight line where the first water inlet pipeline 121 and the second water return pipeline 132 are located is perpendicular to the straight line where the second water inlet pipeline 122 and the first water return pipeline 131 are located, the first water inlet pipeline 121, the second water inlet pipeline 122, the second water return pipeline 132 and the first water return pipeline 131 are arranged around the valve core cavity 11 and are in communication with the valve core cavity 11;

[0046] The valve core 2 is waist-shaped and is provided with a valve rod, the two ends of the valve core 2 are planes, the circumferential surface includes two planes and two circular arc surfaces, the two planes are opposite, and the two circular arc surfaces are located at the two ends of a diameter line, which is called waist-shaped;

[0047] The valve core 2 is rotationally matched with the valve core cavity 11, the valve cover assembly 3 covers the open end of the valve core cavity 11, one end of the valve core 2 is rotationally matched with the closed end of the valve core cavity 11 and is sealed, the other end is rotationally matched with the valve cover assembly 3 and is sealed, and the valve rod 21 is rotationally matched with the valve cover assembly 3.

[0048] As a further improvement of the utility model: the valve cover assembly 3 includes a cover plate 31 and a valve cover 32,

[0049] The cover plate 31 is provided with an external thread cylindrical seat 311, and the valve cover 32 includes an internal thread cavity 321 and a valve rod passage 322;

[0050] The cover plate 31 is attached to the valve body 1 and is sealed, the internal thread cavity 321 is screwed with the external thread cylindrical seat 311, the valve rod 21 is rotationally matched with the external thread cylindrical seat 311 and is sealed, the valve rod 21 is rotationally matched with the valve rod passage 322, and one end of the valve core 2 is rotationally matched with the cover plate 31 and is sealed.

[0051] As a further improvement of the utility model: the open end of the valve core cavity 11 is provided with a counterbore 11, and further includes a sealing ring 4;

[0052] The sealing ring 4 is arranged in the counterbore 111, and the cover plate 31 presses the sealing ring 4.

[0053] As a further improvement of this utility model, it also includes a sealing sleeve 5, on which a flange 51 is provided;

[0054] The sealing sleeve 51 is inserted into the external thread cylindrical seat 311, the flange 51 is fitted with the end of the external thread cylindrical seat 311, and the valve cover 32 presses the flange 51.

[0055] As a further improvement of this utility model: the water inlet end of the first water inlet pipe 121 is provided with a water inlet pipe 61 and a movable nut 62, and the water outlet end of the first water return pipe 131 is provided with a water return pipe 71 and a hinged nut 72.

[0056] like Figure 2 As shown, the first inlet water pipe 121 and the first return water pipe 131 are connected. During use, they are connected in series on the main pipe, and the hot liquid on the main pipe does not enter the heat exchanger; Figure 2 In this state, when the valve core rotates 90 degrees clockwise, the first inlet pipe 121, the second inlet pipe 122, the heat exchanger, the second return pipe 132, and the first return pipe 131 are connected in sequence, and the heat exchanger is in heat exchange state.

[0057] As a further improvement of this utility model: the water outlet end of the second water inlet pipe 122 is provided with an inlet mounting hole 1221 perpendicular to it, and the water inlet end of the second return water pipe 132 is provided with an outlet mounting hole 1321;

[0058] It also includes a water socket 8 and a water plug 9;

[0059] Water sockets 8 and water plugs 9 are respectively provided in the inlet mounting hole 1221 and the outlet mounting hole 1321, and the water sockets are detachably connected. The water plug is used to connect with the inlet and outlet of the heat exchange terminal.

[0060] As a further improvement of this utility model: the water socket 8 includes a housing 81, a water guide plate 82, a core fixing component 83, a pressure spring 84, and a valve core seat 85.

[0061] The housing 81 is hollow with an open end and a guide hole 811 at the closed end;

[0062] The water guide plate 82 includes a fixed hole in the center and an axial water guide hole 821 surrounding the fixed hole;

[0063] The core fixing component 83 includes a core fixing rod 831 and a valve core 832; the valve core hole 832 is shaped like a frustum conical.

[0064] The valve core seat 85 is hollow with one end open, and includes a body 851, a head 852 and a fixed valve core hole 853 provided on the closed end plate. The fixed valve core hole 853 is in the shape of a frustum of a cone.

[0065] like Figure 2As shown, the head 852 slides and seals with the guide hole 811, and the body 851 slides and seals with the inner cavity of the seat 81. The pressure spring 84 is located at the end of the body 851. The water guide plate 82 is fixed inside the open end of the seat 81. The core rod 831 passes through the valve core hole 853 and is fixed with the pressure spring 84 and the fixing hole on the water guide plate 82. Under normal conditions, the valve core 832 and the valve core hole 853 are sealed. The water socket 8 is in the closed state.

[0066] The water plug 9 includes a head shell 91, a head water guide plate 92, a head spring 93, a head core 94, and an external threaded connector 95.

[0067] The head shell 91 is open at one end and includes a head core hole 911 located at the closed end.

[0068] The head guide plate 92 includes a rod guide hole 921 and a flow guide hole 922 surrounding the rod guide hole 921;

[0069] The head core component 94 includes a head core 941, a core body 942, a moving core rod 943, and a stop plate 944.

[0070] The external threaded connector 95 is provided with a countersunk hole 951;

[0071] The head guide plate 92 is located inside the connecting countersunk hole 951. The head core 941 slides and seals with the head core hole 911. The end plate of the closed end of the core body 942 and the head shell 91 engages for positioning. The moving core rod 943 passes through the head spring 93 and the rod guide hole 921. The stop plate 944 engages with the head guide plate 92 for positioning. The head spring 93 engages with the head guide plate 92 and the core body 942. The open end of the head shell 91 is inserted into the connecting countersunk hole 951 and fixes the head guide plate 92. In the closed state, such as... Figure 2 As shown;

[0072] The head shell 91 is inserted into and detachable through the guide hole 811 of the seat shell 81. The head shell 91 drives the valve core seat 85, and the fixed valve core 832 drives the head core component 94, thus realizing the connection between the water plug 9 and the water socket 8.

[0073] like Figure 1 As shown, water connector 9 and water socket 8 are in a disconnected state, and both water connector 9 and water socket 8 are in a closed state. Figure 1 In this state, the water connector 9 moves upward, the head shell 91 is inserted into the guide hole 811, the valve core seat 85 moves upward, the fixed valve core hole 853 and the fixed valve core 832 separate, and the water socket 8 is in the conducting state.

[0074] At the same time, the head core 94 moves downward within the head housing 91, and the head core 941 leaves the head core hole 911; the water plug 9 is in a conductive state; the water plug 9 and the water socket 8 are connected, such as... Figure 6 As shown;

[0075] exist Figure 6In the state, the water plug 9 moves downward, under the action of the pressure spring 84, the valve core seat 85 automatically moves downward until the fixed valve core 832 and the fixed valve core hole 853 are embedded and matched with the stop position;

[0076] At the same time, under the action of the head spring 93, the head core piece 94 moves upward until the head core 941 is embedded with the head core hole 911, and the core body 942 is matched with the end plate of the closed end of the head shell 91. The water plug and the water socket are convenient to disassemble and assemble.

[0077] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A switching valve, characterized in that: Includes valve body, valve core, and valve cover assembly. The valve body includes a valve core cavity with an opening, a first inlet pipe, a second inlet pipe, a first return pipe, and a second return pipe. The straight line of the first inlet pipe and the second return pipe is perpendicular to the straight line of the second inlet pipe and the first return pipe. The first inlet pipe, the second inlet pipe, the second return pipe, and the first return pipe are arranged around the valve core cavity and communicate with the valve core cavity. The valve core is oblong and has a valve stem. The valve core rotates and engages with the valve core cavity, the valve cover assembly covers the open end of the valve core cavity, one end of the valve core rotates and engages with the closed end of the valve core cavity and seals, and the other end rotates and engages with the valve cover assembly and seals, and the valve stem rotates and engages with the valve cover assembly.

2. A switching valve according to claim 1, characterized in that: The valve cover assembly includes a cover plate and a valve cover. The cover plate is provided with an externally threaded cylindrical seat, and the valve cover includes an internally threaded cavity and a valve stem passage; The cover plate fits and seals against the valve body; the internal threaded cavity engages with the external threaded cylindrical seat; the valve stem rotates and seals with the external threaded cylindrical seat; the valve stem rotates and seals with the valve stem passage; one end of the valve core rotates and seals with the cover plate.

3. A switching valve according to claim 2, characterized in that: The valve core cavity has a countersunk hole at its open end and also includes a sealing ring; The sealing ring is placed inside the countersunk hole, and the cover plate presses the sealing ring tightly.

4. A switching valve according to claim 2, characterized in that: It also includes a sealing sleeve, which has a flange; The sealing sleeve is inserted into the external threaded cylindrical seat, the flange fits against the end of the external threaded cylindrical seat, and the valve cover presses against the flange.

5. A switching valve according to claim 1, characterized in that: The first water inlet pipe has an inlet pipe and a movable nut at its inlet end, and the first return water pipe has a return pipe and a movable nut at its outlet end.

6. A switching valve according to claim 1, 2, 3, 4 or 5, characterized in that: The outlet end of the second water inlet pipe is provided with an outlet mounting hole perpendicular to it, and the inlet end of the second water return pipe is provided with an inlet mounting hole; It also includes water sockets and water plugs; Water sockets are provided in the inlet and outlet mounting holes respectively, and the water plug and water socket can be detached and connected.

7. A switching valve according to claim 6, characterized in that: The water socket includes a housing, a water guide plate, a core fixing component, a pressure spring, and a valve core seat. The housing is hollow with an open end and a guide hole at the closed end; The water guide plate includes a fixed hole in the center and axial water guide holes surrounding the fixed hole; The centering component includes a centering rod and a centering valve core; The valve core seat includes a body, a head, and a valve core bore; The head slides and seals with the guide hole and the body with the inner cavity of the seat. The pressure spring is located at the end of the body. The water guide plate is fixed in the open end of the seat. The core rod passes through the valve core hole and is fixed with the pressure spring and the guide fixing hole. Under normal conditions, the valve core and the valve core hole are sealed. The water plug includes a head shell, a head guide plate, a head spring, a head core, and an external threaded connector. The head shell is open at one end, including a head core hole located at the closed end. The head guide plate includes a rod guide hole and a flow guide hole surrounding the rod guide hole; The head core assembly includes the head core, core body, moving core rod, and stop plate. The external threaded connector is provided with a countersunk hole; The head guide plate is located inside the connecting countersunk hole. The head core slides and seals with the head core hole. The moving core rod passes through the head spring and the rod guide hole. The stop plate cooperates with the head guide plate to stop. The head spring cooperates with the head guide plate and the core body. The open end of the head shell is inserted into the connecting countersunk hole. The head shell and the seat shell are connected and detachable through the guide hole. The head shell drives the valve core seat, and the fixed valve core drives the head core component; thus realizing the connection between the water connector and the water socket.

8. A switching valve according to claim 7, characterized in that: The fixed valve core hole and the fixed valve core are both truncated cone shapes.

Images