WO2011131040A1

WO2011131040A1 - Combined reversing valve

Info

Publication number: WO2011131040A1
Application number: PCT/CN2011/000725
Authority: WO
Inventors: 李仕清
Original assignee: Li Shiqing
Priority date: 2010-04-23
Filing date: 2011-04-25
Publication date: 2011-10-27

Abstract

A combined three-way reversing valve is provided, shells (1, 14) of two or more three-way valves are integrally connected or placed within a common installing seat, and every three-way valve has a valve core (2, 9), the valve cores (2, 9) of all of the three-way valves are operatively and integrally connected to each other, so that these valve cores (2, 9) can be simultaneously driven by a common driver to rotate integrally.

Description

Combined reversing valve

The present invention relates to a combined three-way reversing valve that can be used, for example, in the flow direction switching of fluids. Background technique

At present, in the flow direction switching of fluids, a plurality of reversing valves are generally adopted, which are realized by the switch cooperation of the respective valves, and are prone to errors in the fluid flow direction switching, such as the early opening of the early opening, and the opening of the latter step is opened in advance. In particular, it is necessary to change the flow direction by two or more fluids at the same time, which brings a very serious safety hazard and does not utilize automation. Summary of the invention

In order to achieve the above object, the present invention adopts the following technical solutions:

A combined three-way reversing valve comprising a housing and a valve, characterized by at least one housing and a composite housing of at least two valves, each having a chamber for accommodating a valve on each side thereof The housing has at least three ports, and the valve has at least two ports. The two ports on the valve communicate with the two ports on the housing in at least two directions, and the valves on both sides have a through shaft connected in series. There are two inlets with at least four outlets, and the two imports are unchanged. By adjusting the valve reversal, there is an outlet that needs the desired direction and the inlet.

Preferably, the combined three-way reversing valve has at least one housing and at least two valves.

Preferably, the valve of the combined three-way reversing valve is hollow cylindrical or spherical, and each valve has at least two communicating ports.

Preferably, when the combined three-way reversing valve is combined with at least two shells, there is a joint Shaft coupling.

Preferably, there is a linkage connection when the combined three-way reversing valve is combined with at least two housings.

Preferably, a composite insulation layer is disposed inside the combined three-way reversing valve. Preferably, the inner wall of the combined three-way reversing valve has a fire-resistant thermal insulation layer. Preferably, the combined three-way reversing valve is coupled to the motor by a coaxially positioned forward and reverse rotating device reducer.

According to another aspect of the present invention, a combined three-way reversing valve is disclosed, wherein the housings of two or more three-way valves are integrally connected or placed in a common seating, and The respective spools of the two or more three-way valves are operatively coupled to each other so that the spools can be driven to rotate integrally by a common drive member.

In a possible embodiment, each of the housings has three passages, and each of the spools is sealingly connected to the corresponding housing and rotatably mounted to the three passage junctions, each of the spools being hollow and having Two spaced apart openings are capable of selectively communicating two of the three passages by rotating the spool.

In one possible embodiment, the two or more three-way valves may each be used separately, and each spool has a rotational axis extending therethrough.

In a possible embodiment, the axes of rotation of all spools are operatively interconnected.

In a possible embodiment, all spools share a single rotating shaft.

In a possible implementation, the common drive member is an output shaft of a rotary positioning device, and the rotary positioning device comprises:

Housing,

An output shaft, the housing being located within the housing and having a first end and a second end extending through respective sidewalls of the housing and rotatably supported relative to the sidewall;

a main rotating member located in the housing for receiving an external force to rotate The main rotating member is mounted around the output shaft, and is mounted in such a manner that the main rotating member is rotatable relative to the output shaft, but cannot slide axially relative to the output shaft or can only slide within a predetermined range.

The main rotating member has a first main wedge block and a second main wedge block on opposite sides thereof in the axial direction of the output shaft, respectively, the first main wedge block and the second main wedge block respectively Located at a first radius and a second radius from an axis of the output shaft, and the first and second main wedge blocks each have a substantially right-angled triangular shape when viewed radially from the output shaft, and The first main wedge block and the second main wedge block are respectively oriented such that: two right angle sides are respectively aligned with the horizontal direction and the vertical direction, and the oblique side is closer to the corresponding housing wall than the right angle apex portion; The orientation of the first main wedge block and the second main wedge block relative to each other is such that: when the main rotating member rotates in the first direction, the first main wedge block rotates in a direction corresponding to a side of the straight edge thereof a front side of the second main wedge block in a rotational direction with a side corresponding to the oblique side thereof; and a first main wedge shape when the main rotating member rotates in a second direction opposite to the first direction Block to correspond The side of the oblique side is a front side in the direction of rotation, and the second main wedge block has a front side in a direction of rotation with a side corresponding to the straight edge thereof;

a first rotating member and a second rotating member, located in the housing, and each mounted on the output shaft in a non-rotatable manner relative to the output shaft so as to be rotatable together with the output shaft, and the first sum a second rotating member is mounted to be slidable along the output shaft within a predetermined range; an ejector spring is disposed between an end of the first rotating member and the second rotating member adjacent to the corresponding housing wall and the housing wall a stop portion that interacts with one end of each of the first rotating member and the second rotating member that is close to the inside of the housing, the top rotating spring and the second rotating member The rotating member is pressed against the stop portion;

The first and second rotating members respectively have first and second wedge-shaped blocks positioned at one end adjacent to the respective housing wall, and the first and second wedge-shaped blocks are respectively used Interacting with the first and second main wedge blocks of the main rotating member, wherein the first and second wedge blocks are respectively located at the first and second radii from an axis of the output shaft, and The first and second wedge blocks have a substantially right-angled triangular shape when viewed from the output shaft in a radial direction, and the first and second wedge-shaped blocks are each oriented such that: two right-angled sides are respectively horizontally and vertically The straight direction is uniform, and the oblique side of the right triangle is closer to the inside of the housing than the right angle apex portion; and, the orientation between the first wedge block and the second wedge block is such that: when the main rotating member When rotating in the first direction, the front side of the first main wedge block, that is, the side corresponding to the straight edge thereof, will push the side of the first wedge block corresponding to the straight edge thereof; When the main rotating member rotates in the second direction, the front side of the second main wedge block, that is, the side corresponding to the straight edge thereof, will push the side of the second wedge block corresponding to the straight edge thereof;

a first stop member and a second stop member are disposed in the housing and are fixedly coupled to the housing, and the first stop member is disposed on a rotation path of the first wedge block of the first rotating member a third wedge block for acting with the first wedge block of the first rotating member, the second stopping member being disposed on a rotation path of the second wedge block of the second rotating member for a fourth wedge block acting on the second wedge block of the rotating member; the third and fourth wedge blocks are respectively located at the first and second radii from the axis of the output shaft, and the third and the third The four wedge blocks have a shape of a substantially right triangle when viewed from the radial direction of the output shaft, and the third and fourth wedge blocks are each oriented such that the two right angle sides are respectively aligned with the horizontal direction and the vertical direction. And the oblique side of the right triangle is closer to the corresponding housing wall than the right angle apex portion; and, the third wedge block and the fourth wedge block are oriented relative to each other such that: when the first rotating member is first The front side of the main wedge block corresponds to its When the side of the right-angled edge pushes the side of the first wedge-shaped block corresponding to the straight-width side thereof in the first direction, the slope of the third wedge-shaped block interacts with the slope of the first wedge-shaped block, thereby The first wedge block overcomes the force of the ejector spring along the first The three wedge-shaped block climbs; and when the front side of the second main wedge block of the main rotating member, that is, the side corresponding to the straight edge thereof, pushes the side of the second wedge block corresponding to the straight edge thereof along the side When the second direction is rotated, the slope of the fourth wedge block interacts with the slope of the second wedge block such that the second wedge block climbs along the fourth wedge block against the force of the ejector spring; The third main wedge block and the fourth main wedge block are sized and positioned to allow the first main wedge block and the second main wedge block to pass underneath.

In a possible implementation, the slopes of the first and second main wedge blocks and the first to fourth wedge blocks all have the same slope.

In a possible embodiment, the slope causes the first and second wedge blocks to climb along the third and fourth wedge blocks against the force of the ejector spring due to the action of the ejector spring The force and the friction between the bevels are self-locking so that they cannot slide down.

In a possible embodiment, the first rotating member, the second rotating member, the first and second stopping members are all members having a cylindrical body portion, which are sleeved around the output shaft, and are The inner side is outwardly one of the first or second rotating members, the other of the first or second rotating members, one of the first and second stopping members, the first and second stops The other of the pieces, wherein the one of the first and second stops is in sliding engagement with the other of the first or second rotating members.

In a possible embodiment, the first and second rotating members are coupled to the output shaft by a key connection.

In a possible embodiment, the first to fourth wedge blocks are each disposed on an end plate at an end of the cylindrical body portion.

In a possible embodiment, the main rotating member is a pulley, a gear or a sprocket that is sleeved on the other of the first and second stops.

In a possible implementation manner, the main rotating member passes through a corresponding motor The belt drive mechanism, the gear drive mechanism or the chain drive mechanism drives the rotation. In a possible embodiment, the inner side of the valve is provided with a composite insulation structure. In a possible embodiment, a refractory insulation layer is provided on the inner wall of the valve. In a possible embodiment, there is a thermal insulation sleeve on the rotating shaft. DRAWINGS

The technical solutions and advantages of the present invention will be described in detail in the accompanying drawings in conjunction with the accompanying drawings:

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side sectional view showing a combination three-way switching valve according to a first embodiment of the present invention.

Fig. 2 is a side sectional view showing a combination three-way switching valve according to a second embodiment of the present invention.

Fig. 3 is a plan sectional view showing a combination three-way switching valve according to a first embodiment of the present invention.

Fig. 4 is a front cross-sectional view showing the combination three-way switching valve of the first and second embodiments of the present invention. detailed description

Figure 4 shows a schematic cross-sectional view of a three-way valve 100 in accordance with the present invention. The three-way valve 100 includes a housing 200 having three passages 201, 202, 203 and a core 300 that is slidably mounted to the three passage junctions in a sealed manner from the housing 200. The spool 300 is hollow and has two The openings 301 and 302 are spaced apart. It will be readily understood by those skilled in the art that by rotating the spool, the passages 201, 202 can be connected or the passages 201, 203 can be communicated.

According to the present invention, a combined three-way valve that operates by combining two or more three-way valves as above is provided. Specifically, the housings of two or more of the three-way valves of the combined three-way valve may be integrally connected or placed in a common security In the seat, at the same time, the respective spools of the two or more three-way valves are also operatively coupled to each other so that the spools can be driven to rotate integrally by a common drive member. According to a preferred embodiment, the two or more three-way valves can each be used separately, and each spool has a rotational axis extending therethrough. According to the invention, the axes of rotation of each spool are operatively interconnected, for example by a coupling, a gear set or the like. Alternatively, all spools share a single rotating shaft.

According to the invention, the common drive member is an output shaft of a rotary positioning device, and the rotary positioning device may be another Chinese application of the applicant.

As taught in CN201010154389.7, it is incorporated herein by reference. According to the teaching of the application, the rotary positioning device includes:

Housing,

a main rotating member located in the housing for receiving an external force to rotate, the main rotating member being mounted around the output shaft, and being mounted in such a manner that the main rotating member is rotatable relative to the output shaft, but Can't slide axially relative to the output shaft or can only slide within a predetermined range,

The main rotating member has a first main wedge block and a second main wedge block on opposite sides thereof in the axial direction of the output shaft, respectively, the first main wedge block and the second main wedge block respectively Located at a first radius and a second radius from an axis of the output shaft, and the first and second main wedge blocks each have a substantially right-angled triangular shape when viewed radially from the output shaft, and The first main wedge block and the second main wedge block are respectively oriented such that: two right angle sides are respectively aligned with the horizontal direction and the vertical direction, and the oblique side is closer to the corresponding housing wall than the right angle apex portion; The orientation of the first main wedge block and the second main wedge block relative to each other is such that: when the main rotating member rotates in the first direction, the first main wedge block rotates in a direction corresponding to a side of the straight edge thereof Front side, and second main wedge to correspond to its hypotenuse The side surface is a front side in the direction of rotation; and when the main rotating member is rotated in a second direction opposite to the first direction, the first main wedge block has a front side in a rotational direction with a side corresponding to the oblique side thereof And the second main wedge block has a front side in a rotation direction with a side corresponding to the straight edge thereof;

a first rotating member and a second rotating member, located in the housing, and each mounted on the output shaft in a non-rotatable manner relative to the output shaft so as to be rotatable together with the output shaft, and the first sum a second rotating member is mounted to be slidable along the output shaft within a predetermined range; a topping is provided between an end of the first rotating member and the second rotating member adjacent to the corresponding housing wall and the housing wall a spring, the output shaft is provided with a stop portion that interacts with one end of each of the first rotating member and the second rotating member that is close to the inside of the housing, and the pushing spring applies the first rotating member and the first rotating member The two rotating members are pressed against the stopping portion;

The first and second rotating members respectively have first and second wedge-shaped blocks positioned at one end adjacent to the respective housing wall, the first and second wedge-shaped blocks being respectively used for the first rotating member Interacting with a second main wedge block, wherein the first and second wedge blocks are respectively located at the first and second radii from an axis of the output shaft, and the first and second wedges The block has a shape of a substantially right-angled triangle when viewed from the radial direction of the output shaft, and the first and second wedge-shaped blocks are each oriented such that: two right-angled sides are respectively aligned with the horizontal direction and the vertical direction, and The oblique side of the right triangle is closer to the inside of the housing than the right angle apex portion; and, the first wedge block and the second wedge block are oriented relative to each other such that: when the main rotating member is along the first direction When rotating, the front side of the first main wedge block, that is, the side corresponding to its right-angled edge, will push the side of the first wedge-shaped block corresponding to its straight-angled side; and when the main rotating member is along Second direction rotation , The second major side surface of the wedge block front, i.e. the angle corresponding to its side edges would have been push the corresponding second wedge block has its side flank angle;

a first stop and a second stop, which are located in the housing and are fixedly connected to the shell Body, and the first stopper is provided with a third wedge block for acting on the first wedge block of the first rotating member on the rotation path of the first wedge block of the first rotating member, the second a stopper provided with a fourth wedge block for acting on a second wedge block of the second rotating member on a rotation path of the second wedge block of the second rotating member; the third and fourth wedge shapes The blocks are respectively located at the first and second radii from the axis of the output shaft, and the third and fourth wedge blocks have a substantially right-angled triangle shape when viewed radially from the output shaft, and The third and fourth wedge blocks are each oriented such that the two right angle sides coincide with the horizontal direction and the vertical direction, respectively, and the oblique side of the right triangle is closer to the corresponding housing wall than the right angle apex portion; The third wedge block and the fourth wedge block are oriented relative to each other such that: the front side of the first main wedge block of the main rotating member, that is, the side corresponding to the straight edge thereof, pushes the first wedge shape The block corresponds to its always-angled edge When the face rotates in the first direction, the slope of the third wedge block interacts with the slope of the first wedge block such that the first wedge block overcomes the force of the ejector spring along the third wedge shape Block climb; and when the front side of the second main wedge of the main rotating member, that is, the side corresponding to the straight edge thereof, pushes the side of the second wedge corresponding to the straight edge thereof along the second side When the direction is rotated, the slope of the fourth wedge block interacts with the slope of the second wedge block, so that the second wedge block climbs along the fourth wedge block against the force of the ejector spring; The size and position of the third main wedge block and the fourth main wedge block allow the first main wedge block and the second main wedge block to pass underneath.

According to an aspect of the rotational positioning device, the slopes of the first, second main wedge-shaped blocks and the first to fourth wedge-shaped blocks each have the same slope.

According to an aspect of the rotary positioning device, the slope causes the first and second wedge blocks to climb along the third and fourth wedge blocks against the urging force of the ejector spring due to the push-up spring The force and the friction between the bevels are self-locking and cannot be lowered. According to an aspect of the rotational positioning device, the first rotating member, the second rotating member, the first and second stoppers are each a member having a cylindrical body portion that is sleeved around the output shaft, and From the inside to the outside, one of the first or second rotating members, the other of the first or second rotating members, one of the first and second stopping members, the first and second stops The other of the stops, wherein the one of the first and second stops is in sliding engagement with the other of the first or second rotating members.

According to an aspect of the rotary positioning device, the first and second rotary members are coupled to the output shaft via a key connection.

According to an aspect of the rotary positioning device, the first to fourth wedge blocks are each disposed on an end plate at an end portion of the cylindrical body portion.

According to an aspect of the rotary positioning device, the main rotary member is a pulley, a gear or a sprocket that is sleeved on the other of the first and second stoppers.

According to an aspect of the rotary positioning device, the main rotary member is driven to rotate by a motor via a corresponding belt drive mechanism, a gear transmission mechanism or a chain drive mechanism.

The preferred embodiment of the combined three-way reversing valve of the present invention will be described in detail below with reference to the accompanying drawings. In the embodiment 1-2, the composite casing, the double casing and the linkage box are mainly combined. The reversing valve is taken as an example for explanation.

Embodiment 1

As shown in FIG. 1, FIG. 3 and FIG. 4, the combined three-way reversing valve of the first embodiment of the present invention comprises two housings 1, 14 and two valves 2, 9, a linkage box 16, a coupling 13. There are three valves in the housing 14 with a valve 9 and two valves on the valve 9. The outer side of the valve 9 may optionally be provided with a functional layer, such as a composite thermal insulation layer 17, a refractory material 18 on the inner wall, an end cap 8 at the left end of the housing 14, and a sleeve or bearing 11 on the end cap 8, on the shaft 15. Optionally, a function sleeve can be set as needed, such as a heat insulation sleeve

10, the housing 14 has a linkage box 16 outside, and the linkage box 16 has two gears 12 through the short shaft 19, the coupling 13 is coupled to the central shaft 4 of the right side housing. The right end cover 2 of the housing 1 has a forward and reverse rotation positioning device 5 and a motor 6, and the central shaft 4 is provided with, for example, a heat insulating sleeve 7.

According to the above structure, when the combined three-way reversing valve is particularly used for a certain temperature, the heat insulating sleeves 10 and 7 of the shafts 15 and 4 can prevent the shaft from being thermally deformed, and the gates 2, 9 have built-in composite heat insulation. Layers 17, 20, refractory materials 18, 21, can effectively prevent the deformation of the valve 9, 2, the central shaft 15, 4 through the two gears 12 in the linkage box, the coupling of the short shaft 19 and the coupling 13 to the two valves 2 9 can do the reverse rotation at the same time, and the flow direction conversion of the two three-way reversing valves can be effectively realized by the forward and reverse positioning rotary device 5 and the motor 6.

Embodiment 2

As shown in FIG. 2, the combined three-way reversing valve of the second embodiment of the present invention comprises a housing 18, a valve 2, a through shaft 4, and two left and right chambers 16, 17 on the housing 18. Built-in two valves 2, 9, inside the valve 2, 9 is provided with composite insulation layer 17, 14, refractory material 15 is arranged on the inner wall, heat insulation layer 7 is arranged on the through shaft, and both ends are provided at both ends of the casing 3, 8, Bearing or bushing 11. The external shaft and the forward and reverse positioning rotary device 5 are connected by the motor 6 and the transmission device.

According to the above structure, one housing 18 is provided with two chambers, in which two valves 2, 9 are respectively arranged and connected in series by a through shaft 4, which has the advantages of low cost, convenient control and maintenance, and disadvantageously, the housings are left and right. When the fluid flows to the opposite sides of the two outlets, the external piping of the outlet needs to be greatly turned.

Embodiment 3

Fig. 3 shows a third embodiment of the invention, which is substantially similar to the first embodiment except that a gear set is used to connect the shafts of the spool to each other. Such a connection can reduce the need for alignment or concentricity of the shaft.

Other embodiments

The addition and subtraction of the insulation setting, the addition and subtraction of the number of the housing, the corresponding valve addition and subtraction, the increase of the housing outlet, and the increase of the valve can expand the combined three-way reversing of the present invention. The scope of the valve can be applied to the flow direction switching of a variety of different road fluids.

Although the above two types of three-way three-way valve are described as an example, the combined three-way reversing valve of the present invention can also have a combination of more port reversing valves, such as a combined four-way reversing valve. The valve can be combined in a manner that the at least one housing is connected in series with the through shaft and the at least two housings are directly connected in series with the coupling and the linkage box.

The above-described preferred embodiments are illustrative and not restrictive, and the invention may be embodied and embodied in other forms without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the invention, and all modifications within the scope of the invention are intended to fall within the scope of the invention.

Claims

Rights request

A combined three-way commutation, wherein two or more three-way valves are integrally connected or placed in a common seating, and the two or more three-way valves The respective spools are operatively interconnected to each other so that the spools can be driven to rotate integrally by a common drive member.

2. The combined three-way reversing valve of claim 1, wherein each housing has three passages, and each of the cores is sealingly coupled to the respective housing and rotatably mounted to three A passage junction, each spool being hollow and having two spaced apart openings, the opening being capable of selectively communicating two of the three passages by rotating the spool.

3. The combined three-way reversing valve according to claim 1, wherein the two or more three-way valves are each usable separately, and each spool has a rotating shaft extending therethrough .

4. The combined three-way directional control valve of claim 3, wherein the rotational axes of all of the spools are operatively interconnected.

5. The combined three-way reversing valve of claim 3, wherein all of the spools share a single rotating shaft.

6. The combined three-way directional control valve according to claim 3, wherein the common drive member is an output shaft of a rotary positioning device, and the rotary positioning device comprises: a housing,

a main rotating member located in the housing for receiving an external force to rotate, the main rotating member being mounted around the output shaft, and being mounted in such a manner that the main rotating member is rotatable relative to the output shaft, but Can't slide axially relative to the output shaft or can only slide within a predetermined range, The main rotating member has a first main wedge block and a second main wedge block on opposite sides thereof in the axial direction of the output shaft, respectively, the first main wedge block and the second main wedge block respectively Located at a first radius and a second radius from an axis of the output shaft, and the first and second main wedge blocks each have a substantially right-angled triangular shape when viewed radially from the output shaft, and The first main wedge block and the second main wedge block are respectively oriented such that: two right angle sides are respectively aligned with the horizontal direction and the vertical direction, and the oblique side is closer to the corresponding housing wall than the right angle apex portion; The orientation of the first main wedge block and the second main wedge block relative to each other is such that: when the main rotating member rotates in the first direction, the first main wedge block rotates in a direction corresponding to a side of the straight edge thereof a front side of the second main wedge block in a rotational direction with a side corresponding to the oblique side thereof; and a first main wedge shape when the main rotating member rotates in a second direction opposite to the first direction Block to correspond to its oblique Side surface of the front side in the rotational direction, and the second primary wedge block corresponding thereto has side corner edge of the front side in the rotational direction;

The first and second rotating members respectively have first and second wedge-shaped blocks positioned at one end adjacent to the respective housing wall, the first and second wedge-shaped blocks being respectively used for the first rotating member Interacting with a second main wedge block, wherein the first and second wedge blocks are respectively located at the first and second radii from an axis of the output shaft, and the first and second wedges The block has a radial view from the output shaft The shape is substantially a right-angled triangle, and the first and second wedge-shaped blocks are each oriented such that: two right-angled sides are respectively aligned with the horizontal direction and the vertical direction, and the oblique-sided side of the right-angled triangle is more than the right-angled apex Being closer to the interior of the housing; and wherein the first wedge block and the second wedge block are oriented relative to each other such that: when the main rotating member rotates in the first direction, the front side of the first main wedge block That is, the side corresponding to the straight edge thereof will push the side of the first wedge block corresponding to the straight edge thereof; and when the main rotating member rotates in the second direction, the second main wedge block The front side, that is, the side corresponding to the straight edge thereof, will push the side of the second wedge block corresponding to the straight edge thereof;

a first stop member and a second stop member are disposed in the housing and are fixedly coupled to the housing, and the first stop member is disposed on a rotation path of the first wedge block of the first rotating member a third wedge block for acting with the first wedge block of the first rotating member, the second stopping member being disposed on a rotation path of the second wedge block of the second rotating member for a fourth wedge block acting on the second wedge block of the rotating member; the third and fourth wedge blocks are respectively located at the first and second radii from the axis of the output shaft, and the third and the third The four wedge blocks have a shape of a substantially right triangle when viewed from the radial direction of the output shaft, and the third and fourth wedge blocks are each oriented such that the two right angle sides are respectively aligned with the horizontal direction and the vertical direction. And the oblique side of the right triangle is closer to the corresponding housing wall than the right angle apex portion; and, the third wedge block and the fourth wedge block are oriented relative to each other such that: when the first rotating member is first The front side of the main wedge block corresponds to its When the side of the right-angled edge pushes the side of the first wedge-shaped block corresponding to the straight-width side thereof in the first direction, the slope of the third wedge-shaped block interacts with the slope of the first wedge-shaped block, thereby The first wedge block climbs along the third wedge block against the urging force of the ejector spring; and the front side of the second main wedge block of the main rotating member is the side apex corresponding to the straight edge thereof The slope of the fourth wedge block and the second wedge when the side of the second wedge block corresponding to the straight edge thereof is rotated in the second direction The slopes of the blocks interact such that the second wedge wedge climbs along the fourth wedge block against the force of the push-up spring; and the dimensions of the third main wedge block and the fourth main wedge block The position allows the first main wedge block and the second main wedge block to pass underneath.

7. The combined three-way directional control valve according to claim 6, wherein the slopes of the first and second main wedge blocks and the first to fourth wedge blocks all have the same inclination.

8. The combined three-way reversing valve according to claim 7, wherein the slope causes the first and second wedge blocks to overcome the force of the ejector spring along the third and the After the four wedge blocks climb, they are self-locking due to the force of the push-up spring and the friction between the inclined faces, so that they cannot slide down.

9. The combined three-way reversing valve according to claim 6, wherein the first rotating member, the second rotating member, the first and second stopping members are each a member having a rounded main body portion, Enclosing each other around the output shaft, and from the inside to the outside, one of the first or second rotating members, the other of the first or second rotating members, and the first and second stoppers One of the first and second stops, wherein the one of the first and second stops is sliding with the other of the first or second rotating members Engage.

10. The combined three-way directional control valve according to claim 6, wherein the first and second rotating members are coupled to the output shaft by a key connection.

The combined three-way switching valve according to claim 9, wherein the first to fourth wedge blocks are each disposed on an end plate at an end portion of the cylindrical body portion.

12. The combined three-way reversing valve according to claim 6, wherein the main rotating member is a pulley, a gear or a pulley that is sleeved on the other of the first and second stoppers Sprocket.

13. The combined three-way directional control valve of claim 6, wherein the primary rotator is driven to rotate by a motor via a respective belt drive, gearing or chain drive mechanism.