Heating main pipeline and heating tail end conversion device

Abstract

A heating main pipeline and heating tail end conversion device comprises a water supply static valve, a water return static valve, a water supply movable valve, a water return movable valve and a fixing block, the fixing block comprises a power supply fixing hole, a power supply pipe hole, a return fixing hole and a return pipe hole, and the power supply fixing hole and the power supply pipe hole are communicated and located on the same straight line. The reversing fixing hole and the reversing pipe hole are communicated and located on the same straight line. The water supply static valve and the water return static valve are arranged left and right; the power supply valve body is fixed with the power supply fixing hole, the reversing valve body is fixed with the reversing fixing hole, and the reversing pipe body is in sliding fit with the reversing pipe hole; the power supply valve body and the return valve body are in inserted connection and sliding fit with the static valve element cavity and the return static valve element cavity respectively and are in contact fit with the switching valve element and the return switching valve element, and the dynamic elastic plate is in sliding fit with the axial guide groove and is matched with the rear locking groove. The water supply movable valve and the water return movable valve move relative to the water supply static valve and the water return static valve in a reciprocating mode, state switching is achieved, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to an air - energy heat pump system, in particular to a connecting device between a main pipeline and a heating and cooling terminal. Background Art

[0002] In the current existing technology, the water inlet end and the water outlet end of the heating and cooling terminal are communicated with the main pipeline. A main stop valve is arranged on the main pipeline between the water outlet end and the water inlet end, and an inlet stop valve and an outlet stop valve are respectively arranged at the water outlet end and the water inlet end; when the terminal stops being used, it is necessary to open the main stop valve and then close the inlet stop valve and the outlet stop valve respectively; when the terminal is converted to use, the main stop valve is closed and the inlet stop valve and the outlet stop valve are opened; the state conversion process is complex. Content of the Utility Model

[0003] The purpose of the utility model is to provide a conversion device for a heating main pipeline and a heating terminal, which has the characteristic of convenient conversion between the use and stop of the terminal.

[0004] The utility model is realized as follows: a conversion device for a heating main pipeline and a heating terminal, which is characterized in that: it includes a water supply static valve, a return water static valve, a water supply dynamic valve, a return water dynamic valve and a fixing block.

[0005] The water supply static valve includes a water supply static valve body, a supply static spring and a supply switching valve core.

[0006] The water supply static valve body includes a supply static valve core cavity, a supply static valve rod and a supply static valve core, a water supply interface and a supply water outlet interface. The supply static valve core cavity includes a guiding and limiting cavity arranged on one side, two axial grooves opposite to each other up and down and an axial guiding groove arranged on the upper part of the other side. The axial grooves are communicated with the circumferential two ends of the guiding and limiting cavity, and the axial guiding groove is provided with a front locking groove and a rear locking groove arranged front and back; the supply switching valve core includes a cylindrical main body, a water inlet hole and a limiting frame arranged on one side of the cylindrical main body, a static elastic plate arranged on the other side and a water outlet valve core cavity arranged inside the water outlet end; the supply static spring is arranged inside the supply static valve core cavity, the cylindrical main body is arranged inside the supply static valve core cavity and is matched with the supply static spring, the limiting frame is slidably matched with the guiding and limiting cavity, and the axial part of the limiting frame is slidably matched with the axial groove; the supply static valve core and the water outlet valve core cavity are slidably matched; the static elastic plate is slidably matched with the axial guiding groove and is locked with the front locking groove or the rear locking groove; in the direct - through state, the water supply interface and the water outlet interface are communicated, and in the circulating state, the supply switching valve core closes the water outlet interface.

[0007] The return water static valve includes a return water static valve body, a return static spring and a return switching valve core. The return water static valve body includes a return static valve core cavity, a return static valve rod and a return static valve core, a return water inlet interface and a return water outlet interface; the return static valve core cavity and the return switching valve core have the same structure as and are symmetrical to the supply static valve core cavity and the supply switching valve core.

[0008] The water supply dynamic valve includes a water supply dynamic valve body, a water supply dynamic valve core, and a water supply spring. The water supply dynamic valve body includes a water supply dynamic valve core cavity, a water supply dynamic valve core seat, an annular groove provided at the other end, an annular drive plate provided at one axial end of the annular groove, a counterbore, and a dynamic elastic plate. The water supply dynamic valve core includes a water supply cylinder part, a water supply valve stem and a water supply valve core plug, an annular spring cavity, and a water supply pipe body. The water supply spring is arranged in the annular spring cavity. The water supply cylinder part is slidably matched with the water supply dynamic valve core cavity. The water supply valve core plug is matched with the water guiding hole of the water supply dynamic valve core seat. The annular drive plate extends into the annular spring cavity and is in driving cooperation with one end of the water supply spring. The water supply pipe body is slidably matched with the counterbore.

[0009] The water return dynamic valve includes a water return dynamic valve body, a water return dynamic valve core, and a water return spring. The water return dynamic valve body has the same structure as the water supply dynamic valve body and the dynamic elastic plates are symmetric. The water return dynamic valve core has the same structure as the water supply dynamic valve core.

[0010] The fixing block includes a water supply fixing hole and a water supply pipe hole, and a water return fixing hole and a water return pipe hole. The water supply fixing hole and the water supply pipe hole are communicated and on the same straight line. The water return fixing hole and the water return pipe hole are communicated and on the same straight line.

[0011] The water supply static valve and the water return static valve are arranged left and right, and the water outlet interface and the water return inlet interface are communicated. The water supply dynamic valve body is fixed to the water supply fixing hole, the water supply pipe body is slidably matched with the water supply pipe hole, the water return dynamic valve body is fixed to the water return fixing hole, and the water return pipe body is slidably matched with the water return pipe hole. The water supply dynamic valve body and the water return dynamic valve body are respectively inserted and slidably matched with the water supply static valve core cavity and the water return static valve core cavity, and are in contact and cooperation with the water supply switching valve core and the water return switching valve core. The dynamic elastic plate is slidably matched with the axial guiding groove and is in cooperation with the rear locking groove.

[0012] The described heating main pipeline and heating terminal conversion device is characterized in that: the water supply switching valve core and the water return switching valve core are provided with a core axial groove adjacent to the axial part of the limiting frame.

[0013] The water supply static valve core cavity and the water return static valve core cavity are provided with axial protrusions, and the axial protrusions are slidably matched with the core axial groove.

[0014] The described heating main pipeline and heating terminal conversion device is characterized in that: the water supply static valve core cavity is provided with a front radial guiding hole and a rear radial guiding hole communicated with the front locking groove and the rear locking groove, and the water return static valve core cavity is provided with a front radial guiding hole and a rear radial guiding hole communicated with the front locking groove and the rear locking groove.

[0015] It further includes a housing, a driving member, a front driven driving plate, a rear driven driving plate, and a spring.

[0016] The housing is provided with a front and rear guiding hole with a front opening, a front transmission hole, and a rear transmission hole. The front and rear guiding hole includes a square hole and two inclined hole parts distributed in a trapezoid. The inclined hole parts are communicated with the front transmission hole and the rear transmission hole.

[0017] The driving member includes a square body portion, a front driving plate and a rear driving plate provided on both sides of the lower part of the square body portion, and a spring chamber having a rear part and passing through the rear driving plate;

[0018] The front transmission hole and the rear transmission hole are respectively opposite to the front radial guiding hole and the rear radial guiding hole. The front driven driving plate and the rear driven driving plate extend into the front radial guiding hole and the rear radial guiding hole through the front transmission hole and the rear transmission hole and are for the cylindrical main body of the switching valve core, the static elastic plate, for the dynamic valve body and the dynamic elastic plate to cooperate; The housing is fixed to the water supply static valve body and the return water static valve body. The square body portion is slidably matched with the square hole and protrudes. The front driving plate and the rear driving plate are slidably matched with the inclined hole portion; The spring is arranged in the spring chamber 7, one end is matched with the closed end of the spring chamber, and the other end is matched with the closed end of the inclined hole portion. The front driven driving plate and the rear driven driving plate respectively extend into the inclined hole portion through the front transmission hole and the rear transmission hole, and the front driving plate and the rear driving plate are respectively matched with the front driven driving plate and the rear driven driving plate.

[0019] For a heating main pipeline and a heating end conversion device of the present utility model, due to adopting such a structure, the water supply dynamic valve and the return water dynamic valve move reciprocally relative to the water supply static valve and the return water static valve together to realize state conversion, and the operation is convenient. Brief Description of the Drawings

[0020] Figure 1 is one of the sectional views of the present utility model.

[0021] Figure 2 is the exploded plan view of the present utility model.

[0022] Figure 3 is the second sectional view of the present utility model.

[0023] Figure 4 is the third sectional view of the present utility model.

[0024] Figure 5 is the fourth sectional view of the present utility model.

[0025] Figure 6 is the exploded perspective view of the static valve assembly of the present utility model.

[0026] Figure 7 is the sectional view of the water supply static valve body of the present utility model.

[0027] Figure 8 is the first perspective sectional view of the water supply static valve body of the present utility model.

[0028] Figure 9 is the second perspective sectional view of the water supply static valve body of the present utility model.

[0029] Figure 10 is the first perspective view of the switching valve core of the present utility model.

[0030] Figure 11 It is the second three-dimensional view of the switching valve core provided by the present utility model.

[0031] Figure 12 It is the three-dimensional sectional view of the moving valve assembly of the present utility model.

[0032] Figure 13 It is the three-dimensional view of the moving valve assembly of the present utility model.

[0033] Figure 14 It is one of the three-dimensional exploded views of the present utility model.

[0034] Figure 15 It is the three-dimensional view of the driving part of the present utility model.

[0035] Figure 16 It is the second three-dimensional exploded view of the present utility model.

[0036] Figure 17 It is the third three-dimensional exploded view of the present utility model. Detailed implementation manners

[0037] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0039] As Figure 1 、 Figure 2 、 Figure 3 shown, a heating main pipeline and heating end conversion device includes a water supply static valve 1, a return water static valve 2, a water supply moving valve 3, a return water moving valve 4, and a fixing block 5.

[0040] The water supply static valve 1 includes a water supply static valve body 11, a static supply spring 12, and a supply switching valve core 13.

[0041] The water supply static valve body 11 includes a water supply static valve core cavity 111, a water supply static valve rod 112, a water supply static valve core 113, a water supply interface 114, and a water supply and discharge interface 115. One end of the water supply static valve rod 112 is connected to the bottom of the water supply static valve core cavity 111, and the other end is connected to the water supply static valve core 113. The water supply static valve body 11 is integrally formed.

[0042] As Figure 8 , Figure 9 shown, the water supply static valve core cavity 111 includes an arc-shaped guiding and limiting cavity 1111 provided on one side, two axially opposed axial grooves 1112, and an axial guiding groove 1113 provided on the upper part of the other side. The axial grooves 1112 communicate with the circumferential ends of the guiding and limiting cavity 1111. The axial guiding groove 1113 is provided with a front locking groove 1114 and a rear locking groove 1115 arranged front and back. The guiding and limiting cavity 1111 and the water supply interface 114 are provided on the same side.

[0043] As Figure 10 , Figure 11 shown, the switching valve core 13 includes a cylindrical main body 131, a water inlet hole 132 provided on one side of the cylindrical main body 131, a limiting frame 133 with one end open, a static elastic plate 134 provided on the other side, and a water outlet valve core cavity 135 provided inside the water outlet end. The water inlet hole 132 is arc-shaped. The limiting frame 133 includes a circumferential portion and axial portions located at both ends of the circumferential portion. The limiting frame 133 surrounds the water inlet hole 132, and the circumferential portion is located at the axial inner end of the water inlet hole 132. In this embodiment, the static elastic plate 134 is linear and inclined. It can also be in an inverted "U" shape to utilize its elasticity.

[0044] The water supply static spring 12 is arranged inside the bottom of the water supply static valve core cavity 111. The cylindrical main body 131 is arranged inside the water supply static valve core cavity 111 and cooperates with the water supply static spring 12. The cylindrical main body 131 is in sliding fit with the water supply static valve core cavity 111. The limiting frame 133 is in sliding fit with the guiding and limiting cavity 1111, the axial portions of the limiting frame 133 are in sliding fit with the axial grooves 1112, and the circumferential portion is in mating stop with one end of the guiding and limiting cavity 1111. The water supply static valve core 113 and the water outlet valve core cavity 135 are in sliding fit. The static elastic plate 134 is in sliding fit with the axial guiding groove and is locked with the front locking groove or the rear locking groove. As Figure 1 shown, in the direct-through state, the water supply interface 114 and the water outlet interface 115 are communicated. The static elastic plate 134 is engaged with the front locking groove 1114. The water supply static valve core 113 and the water outlet valve core cavity 135 are engaged and sealed. The water supply static spring 12 is in an extended state. As Figure 3 shown, in the circulating state, the switching valve core 13 closes the water outlet interface 115, and the water inlet hole 132 faces the water supply interface 114. The static elastic plate 134 is engaged with the rear locking groove 1115. The water supply static valve core 113 leaves the water outlet valve core cavity 135. The return static spring 22 is in a compressed state.

[0045] The return water static valve 2 includes a return water static valve body 21, a return static spring 22, and a return switching valve core 23. The return water static valve body 21 includes a return static valve core cavity 211, a return static valve rod 212, a return static valve core 213, a return water inlet interface 214, and a return water outlet interface 215. The return static valve core cavity 211 and the return switching valve core 23 have the same structure and are symmetric to the supply static valve core cavity 111 and the supply switching valve core 13. In the circulating state, the return switching valve core 23 closes the return water inlet interface 214, as Figure 3 shown; the return water static valve and the supply water static valve have the same action mode;

[0046] The supply water dynamic valve 3 includes a supply dynamic valve body 31, a supply dynamic valve core 32, and a supply dynamic spring 33.

[0047] The supply dynamic valve body 31 includes a supply dynamic valve core cavity 311, a supply dynamic valve core seat 312, an annular groove 313 provided at the other end, an annular drive plate 314 provided at one axial end of the annular groove, a counterbore 315, and a dynamic elastic plate 316.

[0048] The supply dynamic valve core 32 includes a supply dynamic cylinder part 321, a supply dynamic valve rod 322, a supply dynamic valve core plug 323, an annular spring cavity 324, and a supply dynamic pipe body 325.

[0049] The supply dynamic spring 33 is arranged in the annular spring cavity 324. The supply dynamic cylinder part 321 is slidably matched with the supply dynamic valve core cavity 311. The supply dynamic valve core plug 323 is matched with the water guiding hole of the supply dynamic valve core seat 312. The annular drive plate 314 extends into the annular spring cavity 324 and is in driving cooperation with one end of the supply dynamic spring 33. The supply dynamic pipe body 325 is slidably matched with the counterbore 315. The supply dynamic valve core 32 drives the supply dynamic spring 33.

[0050] The return water dynamic valve 4 includes a return dynamic valve body 41, a return dynamic valve core 42, and a return dynamic spring 43. The return dynamic valve body has the same structure as the supply dynamic valve body 31 and is symmetric to the dynamic elastic plate 316. The return dynamic valve core has the same structure as the supply dynamic valve core 32. In this embodiment, the dynamic elastic plate 316 is linear and inclined; it can also be in an inverted "U" shape.

[0051] The fixing block 5 includes a supply dynamic fixing hole 51, a supply dynamic pipe hole 52, a return dynamic fixing hole (not marked), and a return dynamic pipe hole. The supply dynamic fixing hole 51 and the supply dynamic pipe hole 52 are communicated and on the same straight line. The return dynamic fixing hole and the return dynamic pipe hole are communicated and on the same straight line.

[0052] As Figure 1As shown, the water supply static valve 1 and the return water static valve 2 are arranged left and right, and the water outlet interface 115 and the return water inlet interface 214 are communicated; the driving valve body 31 of the water supply is fixed to the driving fixed hole 51, and the driving pipe body 315 is slidably matched with the driving pipe hole 52. The return driving valve body is fixed to the return driving fixed hole, and the return driving pipe body is slidably matched with the return driving pipe hole; the driving valve body 31 of the water supply and the return driving valve body 41 are respectively inserted and slidably matched with the water supply static valve core cavity 111 and the return water static valve core cavity 211, and are in contact and cooperation with the water supply switching valve core 13 and the return water switching valve core 23. The moving elastic plate 316 is slidably matched with the axial guiding groove and is in cooperation with the front locking groove;

[0053] As Figure 1 , Figure 16 shown, in the straight-through state, the moving elastic plate 316 is engaged with the axial guiding groove 1113 at the front part of the front locking groove; when it is necessary to switch to the circulating state, hold the fixing block 5 by hand. The driving valve body 31 of the water supply driving valve 3 and the return driving valve body 41 of the return water driving valve 4 respectively drive the water supply switching valve core 13 and the return water switching valve core 23 to move. At the same time, the water supply static valve core 113 and the water supply driving valve core plug 323 move into the driving valve body 31 of the water supply; until the water inlet hole 132 and the water supply interface 114 are communicated, the water supply switching valve core 13 closes the water supply and outlet interface 115, the static elastic plate 134 is engaged with the rear locking groove 1115, the moving elastic plate 316 is engaged with the front locking groove 11141, and the return water switching valve core 23 closes the return water inlet interface 214; as Figure 3 shown in the state; the action modes of the return water static valve 2 and the return water driving valve 4 are the same as those of the water supply static valve 1 and the water supply driving valve 3;

[0054] At this time, water enters the water inlet end of the heating terminal through the water supply interface 114, the water supply switching valve core 13, the water outlet valve core cavity 135, the water guiding hole of the water supply driving valve seat 312, the water supply driving valve core 32, and the water supply cylinder part 321 through the driving pipe body 325.

[0055] At the water outlet end of the heating terminal, the return water driving valve 4 flows out through the return water outlet interface 215 of the return water static valve 2. With such a structure, when the state is switched, only hold the fixing block by hand, and the water supply driving valve 3 and the return water driving valve 4 can move back and forth.

[0056] As a further improvement of the present utility model: axial grooves 136 adjacent to the axial part of the limiting frame 133 and core axial grooves are provided on the water supply switching valve core 13 and the return water switching valve core 23;

[0057] Axial protrusions 1116 are provided in the water supply static valve core cavity 111, axial protrusions are provided on the return water static valve core cavity, and the axial protrusions 1116 are slidably matched with the core axial grooves 136.

[0058] As a further improvement of the present utility model: the static spool cavity 111 is provided with a front radial guiding hole 11141 and a rear radial guiding hole 11151 communicating with the front locking groove 1114 and the rear locking groove 1115, and the return static spool cavity 211 is provided with a front radial guiding hole and a rear radial guiding hole communicating with the front locking groove and the rear locking groove;

[0059] It further includes a housing 6, a driving member 7, a front driven driving plate 81, a rear driven driving plate 82 and a spring 9.

[0060] The housing 6 is provided with a front and rear guiding hole 61 with a front opening, a front transmission hole 621 and a rear transmission hole 622. The front and rear guiding hole includes a square hole 611 and two inclined hole portions 612 distributed in a trapezoidal shape. The inclined hole portion 612 communicates with the front transmission hole 621 and the rear transmission hole 622;

[0061] The driving member 7 includes a square body portion 71, a front driving plate 721 and a rear driving plate 722 provided on both sides of the lower part of the square body portion 71, and a spring cavity 723 provided with a rear part and passing through the rear driving plate 722;

[0062] The front transmission hole 621 and the rear transmission hole 622 are respectively opposite to the front radial guiding hole 11141 and the rear radial guiding hole 11151. The front driven driving plate 81 and the rear driven driving plate 82 extend into the front radial guiding hole 11141 and the rear radial guiding hole 11151 through the front transmission hole 621 and the rear transmission hole 622 and are used for the cylindrical main body 131 and the static elastic plate 134 of the switching spool 13, and the dynamic valve body 31 and the dynamic elastic plate 316 to cooperate; the housing 6 is fixed to the water supply static valve body and the return water static valve body. The square body portion 71 is slidably matched with the square hole 611 and extends out. The front driving plate 721 and the rear driving plate 722 are slidably matched with the inclined hole portion 612; the spring 9 is arranged in the spring cavity 723, one end is matched with the closed end of the spring cavity, and the other end is matched with the closed end of the inclined hole portion 612. The front driven driving plate 81 and the rear driven driving plate 82 respectively extend into the inclined hole portion 612 through the front transmission hole 621 and the rear transmission hole 622, and the front driving plate 721 and the rear driving plate 722 are respectively matched with the front driven driving plate 81 and the rear driven driving plate 82.

[0063] Figure 3 、 Figure 13 It is a view of the present utility model in the circulating state. The static elastic plate 134 is engaged with the rear locking groove 1115, and the dynamic elastic plate 316 is engaged with the front locking groove 11141; when it is necessary to convert to the direct-through state;

[0064] Press the front part of the square body portion 71, the square body portion 71 moves into the square hole 611, the front drive plate 721 and the rear drive plate 722 respectively drive the front driven drive plate 81 and the rear driven drive plate 82 to move, and the front driven drive plate 81 and the rear driven drive plate 82 respectively act on the static elastic plate 134 and the dynamic elastic plate 316, so that the static elastic plate 134 leaves the rear locking groove 1115 and enters the axial guiding groove 1113, and the dynamic elastic plate 316 leaves the front locking groove 11141 and enters the axial guiding groove 1113; then hold the fixing block 5 and move it forward, remove the hand from the front part of the square body portion 71, and under the action of the spring 9, the driving member 7 automatically resets;

[0065] When the static elastic plate 134 enters the front locking groove 11141, it is converted into a direct-through state; when the direct-through state is converted into a circulating state, just move the fixing block in the static valve direction directly.

[0066] When the static elastic plate 134 and the dynamic elastic plate 316 are in an inverted "U" shape as described above, using their elasticity, they are locked with the front locking groove and the rear locking groove, and by moving the fixing block back and forth, the static elastic plate 134 and the dynamic elastic plate 316 are locked with the front locking groove and the rear locking groove, or leave the front locking groove and the rear locking groove and enter the axial guiding groove 1113; with such a structure, the housing 6, the driving member 7, the front driven drive plate 81, the rear driven drive plate 82 and the spring 9 are omitted.

[0067] The direct-through state means that the water supply interface 114, the water supply and discharge interface 115, the return water inlet interface 214 and the return water outlet interface 215 are connected in sequence;

[0068] In the circulating state, the water supply static valve 1, the water supply dynamic valve 3, the heating terminal, the return water dynamic valve 4 and the return water static valve 2 are connected in sequence.

[0069] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heating main line and a heating terminal conversion device, characterized in that: It includes a water supply static valve, a return water static valve, a water supply dynamic valve, a return water dynamic valve and a fixing block. The water supply static valve includes a water supply static valve body, a water supply static spring and a water supply switching valve core. The water supply static valve body includes a supply static valve core cavity, a supply static valve stem and a supply static valve core, a water supply interface and a water supply and outlet interface. The supply static valve core cavity includes a guide limit cavity arranged on one side, two axial grooves opposite to each other up and down, and an axial guide groove arranged on the upper part of the other side. The axial groove is connected with the circumferential ends of the guide limit cavity, and the axial guide groove is provided with a front locking groove and a rear locking groove arranged front and back. The supply switching valve core includes a cylindrical body, a water inlet hole and a limit frame arranged on one side of the cylindrical body, a static elastic plate arranged on the other side, and a water outlet valve core cavity arranged in the water outlet end; [the supply static spring is arranged in the supply static valve core cavity, the cylindrical body is arranged in the supply static valve core cavity and cooperates with the supply static spring, the limit frame slides with the guide limit cavity, and the axial part of the limit frame slides with the axial groove; the supply static valve core and the water outlet valve core cavity slide; the static elastic plate and the axial guide groove slide and lock with the front locking groove or the rear locking groove; In the straight-through state, the water supply interface and the water outlet interface are connected, and in the circulation state, the water supply switching valve core closes the water outlet interface; The return static valve includes a return static valve body, a return static spring and a return switching valve core. The return static valve body includes a return static valve core cavity, a return static valve stem and a return static valve core, a return water inlet interface and a return water outlet interface. The return static valve core cavity and the return switching valve core have the same and symmetrical structures as the supply static valve core cavity and the supply switching valve core. The water supply actuator comprises an actuator valve body, an actuator valve core and an actuator spring. The actuator valve body comprises an actuator valve core cavity, an actuator valve core seat, an annular groove arranged in the other end, an annular driving plate arranged at one axial end of the annular groove, a countersunk hole and an actuator elastic plate; the actuator valve core comprises an actuator cylinder, an actuator valve stem and an actuator valve core plug, an annular spring cavity and an actuator tube body; the actuator spring is arranged in the annular spring cavity, the actuator cylinder is slidably matched with the actuator valve core cavity, the actuator valve core plug is matched with the water guide hole of the actuator valve core seat, the annular driving plate extends into the annular spring cavity and is driven and matched with one end of the water supply spring; the actuator tube body is slidably matched with the countersunk hole; The return water valve comprises a return valve body, a return valve core and a return spring. The return valve body and the supply valve body have the same structure and the dynamic elastic plates are symmetrical; the return valve core and the supply valve core have the same structure; The fixed block includes a supply fixing hole and a supply pipe hole and a return fixing hole and a return pipe hole, the supply fixing hole and the supply pipe hole are connected and are in a straight line, and the return fixing hole and the return pipe hole are connected and are in a straight line; The water supply static valve and the water return static valve are arranged on the left and right, and the water outlet interface and the water return inlet interface are connected; the supply moving valve body is fixed to the supply moving fixing hole, the supply moving pipe body is slidingly matched with the supply moving pipe hole, the return valve body is fixed to the return fixing hole, and the return pipe body is slidingly matched with the return pipe hole; the supply moving valve body and the return valve body are respectively plugged into and slidingly matched with the supply static valve core cavity and the return static valve core cavity, and are in contact and matched with the supply switching valve core and the return switching valve core, and the dynamic elastic plate is slidingly matched with the axial guide groove and matched with the rear locking groove.

2. A heating main line and heating terminal conversion device according to claim 1, characterized in that: The supply switching valve core and the return switching valve core are provided with a core axial groove adjacent to the axial part of the limit frame; The static supply valve core cavity and the static return core cavity are provided with axial protrusions, and the axial protrusions are slidably matched with the core axial grooves.

3. A heating main line and heating terminal conversion device according to claim 1 or 2, characterized in that: The supply static valve core cavity is provided with a front radial guide hole and a rear radial guide hole communicating with the front locking groove and the rear locking groove, and the return static valve core cavity is provided with a front radial guide hole and a rear radial guide hole communicating with the front locking groove and the rear locking groove; It also includes a housing, a driving member, a front driven driving plate, a rear driven driving plate and a spring, The housing is provided with front and rear guide holes, a front transmission hole and a rear transmission hole with a front opening, and the front and rear guide holes include a square hole and two inclined hole portions distributed in a trapezoidal shape, and the inclined hole portions are connected with the front transmission hole and the rear transmission hole; The driving member comprises a square body, a front driving plate and a rear driving plate arranged on both sides of the lower part of the square body, and a spring cavity provided with a rear part and passing through the rear driving plate; The front transmission hole and the rear transmission hole are respectively opposite to the front radial guide hole and the rear radial guide hole, the front driven drive plate and the rear driven drive plate extend into the front radial guide hole and the rear radial guide hole through the front transmission hole and the rear transmission hole, and cooperate with the cylindrical body and the static elastic plate of the supply switching valve core, the supply valve body and the dynamic elastic plate; the shell is fixed to the water supply static valve body and the return water static valve body, the square body part slides with the square hole and extends out, and the front drive plate and the rear drive plate slide with the inclined hole part; the spring is arranged in the spring cavity, one end cooperates with the closed end of the spring cavity, and the other end cooperates with the closed end of the inclined hole part, the front driven drive plate and the rear driven drive plate extend into the inclined hole part through the front transmission hole and the rear transmission hole respectively, and the front drive plate and the rear drive plate cooperate with the front driven drive plate and the rear driven drive plate respectively.

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