Switching valve and fluid processing device

Abstract

The utility model discloses a switching valve and a fluid processing device. The switching valve comprises a reversing shell, a reversing piece and a driving piece. The reversing shell is provided with at least one group of outlet flow channels, an inlet flow channel and a reversing cavity, and the outlet flow channels and the inlet flow channel are respectively communicated with the reversing cavity. The reversing piece is installed in the reversing cavity. The driving piece is connected between the reversing shell and the reversing piece so as to drive the reversing piece to move in the reversing cavity in a reciprocating mode, and therefore the connecting-in flow channel is switched and communicated between the two connecting-out flow channels. The reversing shell is further provided with a bypass flow channel communicated between the two outlet flow channels, and the switching valve further comprises an adjusting piece for adjusting on-off of the bypass flow channel. And in the moving process of the reversing piece, the bypass flow channel is conducted through the adjusting piece. According to the switching valve, the flow direction of fluid can be conveniently switched in a labor-saving mode. The fluid treatment device can simplify pipeline connection and reduce pipeline pressure loss. And meanwhile, the fluid treatment device can enable the pipeline system to be switched to operate without shutdown, so that the working efficiency is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, in particular to a switching valve and a fluid processing device. Background Art

[0002] In various piping systems such as lubrication systems, drainage systems or air supply systems, the fluid in the pipeline usually needs to undergo various treatments to meet the use requirements. For example, processing components such as filters or dryers need to be configured in the pipeline to keep the fluid flowing out of the pipeline dry or clean. As the pipeline system runs for a long time, processing components such as filters or dryers need to be replaced or repaired regularly. Usually, two processing components that can be switched with each other are configured in the pipeline so that the pipeline system can replace the processing components without stopping the system, ensuring the continuous and stable operation of the pipeline system.

[0003] However, during use of the pipeline system in the related art, when switching between two processing components, the switching resistance in the pipeline system is relatively large, making the switching process more difficult. Utility Model Content

[0004] The utility model provides a switching valve and a fluid processing device, which can switch the flow direction of the fluid with little effort.

[0005] The technical solution adopted by the utility model is as follows:

[0006] According to the first aspect disclosed in the utility model, a switching valve is provided, including a reversing housing, a reversing member and a driving member. The reversing housing has at least one group of outlet flow channels, and at least one group of outlet flow channels includes two outlet flow channels that are independently arranged. The reversing housing also has an access flow channel and a reversing chamber, and each outlet flow channel is connected to the access flow channel and the reversing chamber respectively. The reversing member is installed in the reversing chamber. The driving member is connected between the reversing housing and the reversing member to drive the reversing member to reciprocate in the reversing chamber so that the access flow channel switches between the two outlet flow channels. Among them, the reversing housing also has a bypass flow channel connected between the two outlet flow channels, and the switching valve also includes an adjusting member, which is connected to the bypass flow channel to adjust the on and off of the bypass flow channel. During the movement of the reversing member, the adjusting member conducts the bypass flow channel.

[0007] When the switching valve provided by the utility model is used, taking the switching valve applied to the pipeline system as an example, along the flow direction of the fluid in the pipeline system, the access flow channel of the switching valve is connected to the inflow pipeline of the pipeline system, and each outflow flow channel of the switching valve is connected to each outflow pipeline or fluid processing component (such as a filter or a dryer, etc.) of the pipeline system. When the pipeline system is running, one of the outflow flow channels of the switching valve is used as the working flow channel of the circulating fluid, and the other outflow flow channels of the switching valve are used as spare outflow flow channels. When the pipeline system needs to switch the flow direction of the fluid or repair and replace one of the fluid processing components, the fluid can be switched from flowing through the working flow channel to flowing through the spare outflow flow channel through the switching valve. Since when the switching valve is actuated, there is already fluid flowing through the working flow channel of the switching valve, and there is no fluid flowing through the spare outflow channel, there is a pressure difference between the working flow channel and the spare outflow channel of the switching valve, resulting in the switching valve's reversing member requiring the driving member to provide a larger driving force at the moment of movement to overcome the pressure difference, and then move in the reversing chamber to switch the flow direction of the fluid. Based on this, before the switching valve is activated, the utility model first uses the regulating member to conduct the bypass channel connected between the working channel and the standby outlet channel, so that part of the fluid in the working channel enters the standby outlet channel first, so as to reduce the fluid pressure difference between the working channel and the standby outlet channel. In this way, the driving member can provide a relatively small driving force to drive the switching member to move in the switching chamber, thereby realizing the flow direction switching of the fluid.

[0008] In addition, the switching valve provided by the utility model can be used in various pipeline systems such as ventilation, drainage or lubrication. At the same time, the switching valve provided by the utility model can also be used in equipment such as liquid storage containers, gas storage containers or compressors, and the utility model does not make any restrictions.

[0009] According to the second aspect disclosed in the utility model, a fluid processing device is provided, comprising a valve seat and the above-mentioned switching valve. The reversing housing is fixedly mounted on the valve seat. The valve seat has an outflow channel and at least one set of return channels, and the at least one set of return channels includes two return channels that are independently arranged, and each return channel is arranged in a one-to-one correspondence with each outflow channel. The reversing housing has an external connection portion connected to the outflow channel, and the valve seat has a return portion connected to the return channel.

[0010] The fluid processing device provided by the utility model can simplify the pipeline connection, reduce the pipeline pressure loss, and facilitate the installation and maintenance of the pipeline system while facilitating the switching of the fluid flow direction. At the same time, the fluid processing device provided by the utility model can be connected to an external processing component (such as a filter and a dryer, etc.). The processing inlet of the processing component is connected to the external connection part, and the processing outlet of the processing component is connected to the return part. The utility model realizes the switching of processing components without stopping the machine through the fluid processing device, so as to reduce the number of shutdowns for maintenance of the pipeline system and ensure the operating efficiency of the pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of the switching valve of the utility model.

[0012] Figure 2 For along Figure 1 Cross-sectional view of FF.

[0013] Figure 3 It is a top view of the switching valve of the utility model.

[0014] Figure 4 For along Figure 3 Cross-sectional view of MM.

[0015] Figure 5 For along Figure 3 Cross-sectional view of NN.

[0016] Figure 6 It is a structural schematic diagram of the adjusting member of the utility model.

[0017] Figure 7 It is a structural schematic diagram of the connection between the commutating member and the driving member of the utility model.

[0018] Figure 8 It is a structural schematic diagram of the fluid processing device of the present utility model.

[0019] Fig. 9 It is a top view of the fluid processing device of the present invention.

[0020] Fig.10 For along Fig. 9 Sectional view of AA.

[0021] Fig.11 For along Fig. 9 Cross-sectional view of BB.

[0022] Fig.12 for Fig.11 Schematic diagram of the structure without the anti-return component.

[0023] Fig.13 It is a front view of the fluid processing device of the present utility model.

[0024] Fig.14 For along Fig.13 Cross-sectional view of CC.

[0025] Fig.15 For along Fig.13 Cross-sectional view of DD.

[0026] Fig.16 It is a right side view of the fluid treatment device of the present utility model.

[0027] Fig.17 It is a left view of the fluid treatment device of the present utility model.

[0028] Fig.18 The utility model is a structural schematic diagram of a fluid processing device in which a fluid processing component is installed.

[0029] Fig.19 The utility model is a schematic diagram of the internal structure of the fluid processing device in which the fluid processing components are installed.

[0030] Reference numerals:

[0031] 1-switching valve; 11-reversing housing; 111-outflow channel; 112-access channel; 113-reversing chamber; 114-bypass channel; 114a-bypass hole; 115-adjusting chamber; 116-adjusting hole; 117-mounting hole; 12-reversing member; 121-cavity; 122-reversing hole; 13-driving member; 131-connecting part; 132-force-applying part; 14-adjusting member; 141-on-off part; 142-operating part; 143-sealing part; 15-positioning assembly; 16-ventilation assembly; 161-ventilation housing; 161a-ventilation channel; 162-ventilation member; 2-fluid handling device; 21-valve seat; 21a-top of valve seat; 21b-bottom of valve seat; 211-outflow channel; 211a-outflow hole ;211b-flow guide;212-reflux channel;22-external connection;22a-external connection hole;23-connection;23a-reflux hole;24-check assembly;241-check shell;242-check piece;242a-sealing part;242b-sliding part;243-check flow channel;25-inflow pressure connection;26-outflow pressure connection;27-inflow assembly;271-inflow shell;2711-inflow cavity;2712-temperature control cavity;271a-main inlet hole;271b-discharge hole;271c-sub-inflow hole;272-on-off piece;272a-sleeve;272b-temperature sensing piece;28-end cover;29-processing component;291-filter assembly;291a-filter shell;291b-filter element. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution in the utility model. It should be understood that the drawings in the utility model are only for illustrative purposes, and for those skilled in the art, the omission of certain well-known structures and their descriptions in the drawings is understandable. At the same time, in the description of the utility model, if there are terms such as "upper", "lower", "left", "right" and the like indicating the orientation or position relationship, it is only based on the orientation or position relationship shown in the drawings, and is a simplified description for the convenience of describing the utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Accordingly, the description of the utility model involves similar descriptions such as "first", "second", etc., which are only used to distinguish different components, and cannot be understood as indicating or implying their relative importance, any order, or implicitly indicating the number of technical features indicated.

[0033] In various piping systems such as lubrication systems, drainage systems or air supply systems, the fluid in the pipeline usually needs to undergo various treatments to meet the use requirements. For example, processing components such as filters or dryers need to be configured in the pipeline to keep the fluid flowing out of the pipeline clean or dry. Usually, as the pipeline system runs for a long time, processing components such as filters or dryers need to be replaced or repaired regularly. However, replacing or repairing processing components often requires shutting down the pipeline system, resulting in the inability of the pipeline system to operate under continuous working conditions, affecting work efficiency.

[0034] Taking the treatment component as a filter as an example, in the related technology, the pipeline system is equipped with a switching valve and two filters. The two filters are connected to the two outlets of the switching valve through two different pipelines, and the switching valve can be operated to control the fluid to flow into the two different filters along the two different pipelines. In this way, when one of the filters needs to be replaced, the fluid can be introduced into the other filter through the switching valve, so that the pipeline system can replace the filter without stopping the machine.

[0035] However, during use of the pipeline system in the related art, when switching between two processing components, the resistance in the pipeline system is relatively large, so that the valve core of the switching valve requires a large switching force to move, making the switching process more difficult.

[0036] Therefore, the utility model provides a switching valve 1, which can switch the flow direction of the fluid with little effort and facilitates the switching of various processing components of the pipeline system without stopping.

[0037] The switching valve 1 provided by the utility model can be used in various pipeline systems such as ventilation, drainage or lubrication. At the same time, the switching valve 1 provided by the utility model can also be used in equipment such as liquid storage containers, gas storage containers or compressors, and the utility model does not make any restrictions.

[0038] See also Figures 1 to 5 , the switching valve 1 provided by the utility model will be described below.

[0039] The utility model provides a switching valve 1, comprising a reversing housing 11, a reversing member 12, a driving member 13 and an adjusting member 14. The reversing housing 11 has at least one group of outlet flow channels 111, and at least one group of outlet flow channels 111 includes two outlet flow channels 111 independently arranged from each other. The reversing housing 11 also has an access flow channel 112 and a reversing cavity 113, and each of the outlet flow channels 111 and the access flow channel 112 are respectively connected to the reversing cavity 113. The reversing member 12 is installed in the reversing cavity 113 and can move in the reversing cavity 113. The driving member 13 is connected between the reversing housing 11 and the reversing member 12 to drive the reversing member 12 to reciprocate in the reversing cavity 113, so that the access flow channel 112 switches between the two outlet flow channels 111. The reversing housing 11 also has a bypass channel 114 connected between the two outlet channels 111 , and the adjusting member 14 is connected to the bypass channel 114 to adjust the on and off of the bypass channel 114 . During the movement of the reversing member 12 , the adjusting member 14 conducts the bypass channel 114 .

[0040] It should be noted that see Figure 1 and Figure 2 , the access flow channel 112 is used as the inlet end of the switching valve 1, and each outlet flow channel 111 is used as the outlet end of the switching valve 1. Among them, a reversing cavity 113 is provided inside the reversing housing 11, and a plurality of through holes connected to the reversing cavity 113 can be processed on the reversing housing 11 to form the access flow channel 112 and the outlet flow channel 111 respectively. The reversing housing 11 can be an integrally formed part or a spliced ​​part, and the utility model does not limit it.

[0041] Among them, in order to facilitate the switching of the flow direction of the fluid, at least two independent outlet channels 111 are provided on the reversing housing 11, so that the fluid can flow out of the reversing chamber 113 through two different outlet channels 111. Among them, the two outlet channels 111 can work simultaneously or alternately. For example, when one of the outlet channels 111 is used as a working channel, the other outlet channels 111 are in an unused state and serve as spare outlet channels 111. In this way, when one of the outlet channels 111 fails, it can also be switched to other spare outlet channels 111 for use, so that the pipeline system connected to the switching valve 1 can continue to operate stably and reduce the number of downtime maintenance and downtime of the pipeline system. Of course, multiple outlet channels 111 can also conduct fluids at the same time to improve the conduction processing efficiency of the fluid. In addition, the outlet channels 111 in the utility model are not limited to two, but can also be three, four or five or more, which will not be elaborated in the utility model.

[0042] The switching member 12 is used to move in the switching chamber 113 to connect the access flow channel 112 with different access flow channels 111. For example, during the movement of the switching member 12, the switching member 12 can block the through hole of one of the access flow channels 111 connected to the switching chamber 113, so that the access flow channel 112 is connected to the other access flow channel 111. The switching member 12 moves back and forth to switch the access flow channel 112 between the two access flow channels 111. The switching member 12 can be a plate-shaped, block-shaped or spherical structure, which is not limited by the present invention.

[0043] The driving member 13 is used to drive the reversing member 12 to move in the reversing cavity 113. The driving member 13 can be a handle or a connecting rod assembly directly mechanically connected to the reversing member 12. The driving member 13 can also be a power element such as an electric control assembly, a magnetic attraction assembly or a hydraulic assembly, which is not limited by the present invention.

[0044] The adjusting member 14 is used to cooperate with the bypass channel 114 in the reversing housing 11 to adjust the on-off of the bypass channel 114. Among them, a bypass hole 114a is respectively provided on the side wall of the access channel 112 and the outlet channel 111 of the reversing housing 11, and the bypass channel 114 can be formed by connecting the two bypass holes 114a. The adjusting member 14 is used to control the on-off of the bypass channel 114. As an example, the adjusting member 14 can be a blocking member provided in the bypass channel 114, and the on-off of the bypass channel 114 is adjusted by moving or flipping the blocking member. Alternatively, the adjusting member 14 can be a telescopic member provided in the bypass channel 114, and the on-off of the bypass channel 114 is adjusted by the size change of the adjusting member 14.

[0045] Normally, when the reversing member 12 of the switching valve 1 is not actuated, the regulating member 14 blocks the bypass flow channel 114. When the switching valve 1 needs to be actuated to switch the fluid from the working flow channel to the standby outlet flow channel 111, the regulating member 14 conducts the bypass flow channel 114, so that part of the fluid in the working flow channel enters the standby outlet flow channel 111 first, which is used to reduce the fluid pressure difference between the two outlet flow channels 111, so that the driving member 13 drives the reversing member 12 to move in the reversing chamber 113, connects the access flow channel 112 with the standby outlet flow channel 111, and then realizes the flow direction switching of the fluid.

[0046] Therefore, when the switching valve 1 in the utility model is used, taking the application of the switching valve 1 in a pipeline system as an example, along the flow direction of the fluid in the pipeline system, the access channel 112 of the switching valve 1 is connected to the inflow pipe of the pipeline system, and each outflow channel 111 of the switching valve 1 is connected to each outflow pipe or fluid processing component (such as a filter or a dryer, etc.) of the pipeline system. When the pipeline system is in operation, one of the outflow channels 111 of the switching valve 1 serves as the working channel for the circulating fluid, and the other outflow channels 111 of the switching valve 1 serve as spare outflow channels 111. When the pipeline system needs to switch the fluid flow direction or repair and replace one of the fluid processing components, the switching valve 1 can be used to switch the fluid from flowing through the working channel to flowing through the spare outflow channel 111. Since when the switching valve 1 is actuated, fluid has already flowed through the working flow channel of the switching valve 1, while the spare outlet flow channel 111 has not yet flowed through the fluid, there is a pressure difference between the working flow channel of the switching valve 1 and the spare outlet flow channel 111, resulting in the switching member 12 of the switching valve 1 requiring the driving member 13 to provide a large driving force at the moment of movement to overcome the pressure difference, and then move the switching fluid flow direction in the switching chamber 113. Based on this, before the switching valve 1 is actuated, the utility model first uses the regulating member 14 to conduct the bypass flow channel 114 connected between the working flow channel and the spare outlet flow channel 111, so that part of the fluid in the working flow channel enters the spare outlet flow channel 111 first, so as to reduce the fluid pressure difference between the working flow channel and the spare outlet flow channel 111. In this way, the driving member 13 can provide a relatively small driving force to drive the switching member 12 to move in the switching chamber 113, thereby realizing the flow direction switching of the fluid.

[0047] See also Figures 3 to 5 In some embodiments, in order to prevent the regulating member 14 from occupying the flow space of the fluid in the bypass channel 114, the reversing housing 11 has a regulating chamber 115 connected to the bypass channel 114, and the regulating member 14 is arranged in the regulating chamber 115, and the regulating member 14 can reciprocate in the regulating chamber 115 and the bypass channel 114 to adjust the on and off of the bypass channel 114. In this way, when the regulating member 14 conducts the bypass channel 114, the regulating member 14 can be in the regulating chamber 115 to prevent the regulating member 14 from occupying the space in the bypass channel 114 and affecting the flow of the fluid. When the regulating member 14 blocks the bypass channel 114, the regulating member 14 can be moved from the regulating chamber 115 to the bypass channel 114. The regulating member 14 can be driven to move by means of electric control or magnetic attraction, etc., and the utility model does not limit it.

[0048] See also Figure 2 , Figure 4 and Figure 6In some embodiments, in order to facilitate the reciprocating movement of the adjusting member 14 in the adjusting chamber 115 and the bypass channel 114, the reversing housing 11 has an adjusting hole 116 connecting the outside of the reversing housing 11 and the adjusting chamber 115, and the adjusting member 14 includes a switching portion 141 and an operating portion 142. The switching portion 141 is arranged in the adjusting chamber 115, and the operating portion 142 is connected to the switching portion 141 and extends from the adjusting hole 116 to the outside of the reversing housing 11. The operating portion 142 is subjected to force to drive the switching portion 141 to reciprocate in the adjusting chamber 115 and the bypass channel 114. In this arrangement, the operating portion 142 of the adjusting member 14 is outside the adjusting chamber 115, and the switching portion 141 of the adjusting member 14 is inside the adjusting chamber 115, and the movement of the adjusting member 14 can be achieved by applying force to the operating portion 142. As an example, the adjustment member 14 can be a pin, a screw or a connecting rod assembly, etc. The user can move the on-off part 141 in the adjustment cavity 115 and the bypass channel 114 by pushing, pulling or rotating the operating part 142, etc., and the utility model does not limit this.

[0049] In some embodiments, in order to prevent the fluid from flowing out of the adjustment hole 116, the adjustment member 14 also includes a sealing portion 143 connected between the on-off portion 141 and the operating portion 142, and the sealing portion 143 is detachably connected to the adjustment hole 116. In this way, during the movement of the adjustment member 14, the sealing portion 143 can seal the gap between the adjustment member 14 and the adjustment hole 116 to prevent the fluid from flowing out. The sealing portion 143 can be a boss arranged on the side wall of the on-off portion 141 or a sealing ring fixed to the adjustment member 14, and the utility model does not limit it. In some embodiments, a sealing ring can also be arranged in the adjustment hole 116 to seal the gap between the adjustment hole 116 and the adjustment member 14.

[0050] In addition, in order to seal the gap between the adjusting member 14 and the adjusting hole 116 and to facilitate the movement of the adjusting member 14, the inner wall of the adjusting hole 116 is provided with an internal thread, and the sealing portion 143 is provided with an external thread that matches the internal thread. The operating portion 142 is fixed to the sealing portion 143, and the operating portion 142 is rotated to make the on-off portion 141 reciprocate in the adjusting chamber 115 and the bypass channel 114 through threaded engagement.

[0051] In some embodiments, in order to facilitate the fluid to enter the two outlet channels 111 through the bypass channel 114, the inner diameter of the bypass channel 114 is smaller than the inner diameter of each outlet channel 111. With this arrangement, on the one hand, the fluid flows faster in a pipe with a small inner diameter. When the bypass channel 114 is turned on, the fluid in the outlet channel 111, which serves as the working channel, can quickly flow into the spare outlet channel 111 through the narrow bypass channel 114, so as to quickly reduce the pressure difference between the outlet channel 111 and the spare outlet channel 111, which is conducive to quickly driving the reversing member 12 to switch the fluid flow direction. On the other hand, since the inner diameter of the bypass channel 114 is small, the matching contact area between the bypass channel 114 and the regulating member 14 is small, making it easier for the regulating member 14 to be driven, so as to reduce the differential pressure between the two outlet channels 111 by turning on the bypass channel 114.

[0052] In some embodiments, in order to facilitate the movement of the reversing member 12 in the reversing cavity 113 to switch the connection between the incoming flow channel 112 and each outgoing flow channel 111 , the driving member 13 can drive the reversing member 12 to rotate or reciprocate in the reversing cavity 113 .

[0053] Among them, see Figure 3 , Figure 5 and Figure 7 When the driving member 13 drives the reversing member 12 to rotate in the reversing cavity 113, the reversing housing 11 has a mounting hole 117 connecting the outside of the reversing housing 11 and the reversing cavity 113, and the driving member 13 includes a connecting portion 131 and a force applying portion 132. The connecting portion 131 is rotatably connected in the mounting hole 117 and is connected to the reversing member 12. The force applying portion 132 is fixed to the connecting portion 131 and extends from the mounting hole 117 to the outside of the reversing housing 11. The force applying portion 132 is rotated under force, so that the connecting portion 131 drives the reversing member 12 to reciprocate in the reversing cavity 113.

[0054] In this arrangement, the driving member 13 is rotatably connected to the reversing housing 11 through the mounting hole 117, and the connecting portion 131 as one end of the driving member 13 extends from the mounting hole 117 to the reversing cavity 113 to be connected to the reversing member 12. The force-applying portion 132 as the other end of the driving member 13 extends from the mounting hole 117 to the outside of the reversing housing 11 to form a free end. When the free end of the force-applying portion 132 is rotated by force, the force-applying portion 132 drives the reversing member 12 to rotate in the reversing cavity 113, so that the incoming flow channel 112 can switch between the two outgoing flow channels 111.

[0055] Among them, the connection between the connecting portion 131 and the force-applying portion 132 forms a corner, so that the force-applying portion 132 is bent relative to the connecting portion 131. This arrangement can not only save the installation direction of the force-applying portion 132 and the connecting portion 131 in the axial direction of the mounting hole 117, but also increase the force arm of the force-applying portion 132, so as to save effort to rotate the force-applying portion 132 to drive the reversing member 12 to move in the reversing cavity 113. Of course, in other embodiments, the driving portion also has a corner portion, and the corner portion is connected between the connecting portion 131 and the force-applying portion 132, so that the connecting portion 131 and the force-applying portion 132 are staggered along the axial direction of the mounting hole 117, which can also save the installation direction of the driving member 13 in the axial direction of the mounting hole 117, and can also increase the force arm of the driving member 13, which will not be elaborated in the utility model.

[0056] In some embodiments, in order to avoid motion interference between the adjusting member 14 and the driving member 13 , the adjusting member 14 and the driving member 13 may be disposed at different positions or in different directions of the reversing housing 11 .

[0057] In some embodiments, in order to prevent the reversing member 12 from being accidentally touched to switch the fluid flow direction, the switching valve 1 further includes a positioning assembly 15, and the positioning assembly 15 includes a positioning fitting and a positioning member. The positioning fitting is fixed to the reversing housing 11. The positioning member is fixed to the driving member 13 and is detachably connected to the positioning fitting to fix the relative position of the driving member 13 and the reversing housing 11.

[0058] It should be noted that, during the movement of the driving member 13 driving the reversing member 12, the relative position of the driving member 13 and the reversing housing 11 can be fixed by the positioning assembly 15. Figure 1 As an example, the force applying portion 132 of the driving member 13 is Figure 1 When the force applying part 132 of the driving member 13 is in the left position, the positioning member can be relatively fixed with the positioning matching member on the left side of the reversing housing 11, so that the reversing member 12 connects the incoming flow channel 112 with the outgoing flow channel 111 on the left side. Figure 1 When the positioning member is in the middle right position, the positioning member can be relatively fixed with the positioning matching member on the right side of the reversing housing 11, so that the reversing member 12 connects the incoming flow channel 112 with the outgoing flow channel 111 on the right side. In this way, through the matching and locking of the positioning assembly 15, the driving member 13 after reversing can be fixed relative to the reversing housing 11, so that the reversing member 12 can maintain the conductive state of the incoming flow channel 112 and each outgoing flow channel 111, thereby preventing the force applying part 132 from swinging arbitrarily on the left and right sides, affecting the conductive state of the incoming flow channel 112 and each outgoing flow channel 111.

[0059] In some embodiments, the reversing member 12 may have a variety of shapes or structures. For example, when the switching valve 1 has one incoming flow channel 112 and two outgoing flow channels 111, the reversing member 12 may be a plate-shaped member, which may cover the connection hole of at least one outgoing flow channel 111 connected to the reversing chamber 113, so that when the plate-shaped member rotates or translates, the incoming flow channel 112 may be switched to communicate with different outgoing flow channels 111.

[0060] See also Figure 7 In other embodiments, the switching member 12 may also be provided with a cavity 121 and at least two switching holes 122 connected to the cavity 121. The two switching holes 122 are arranged at intervals along the circumference of the switching member 12 so as to connect the incoming flow channel 112 with one of the two outgoing flow channels 111 during the rotation of the switching member 12.

[0061] It should be noted that the two reversing holes 122 are respectively the first reversing hole 122 and the second reversing hole 122. When the driving member 13 rotates forward, the first reversing hole 122 is connected to the access flow channel 112, and the second reversing hole 122 is connected to the outlet flow channel 111 as the working flow channel. When the driving member 13 rotates reversely, the second reversing hole 122 is connected to the access flow channel 112, and the first reversing hole 122 is connected to the standby outlet flow channel 111.

[0062] In other embodiments, in order to meet the multi-directional conduction requirements of the fluid, the reversing member 12 is provided with a cavity 121 and at least three reversing holes 122 connected to the cavity 121. The reversing holes 122 are arranged at intervals along the circumference of the reversing member 12 so as to conduct the incoming flow channel 112 with at least one of the two outgoing flow channels 111 during the rotation of the reversing member 12.

[0063] Taking three reversing holes 122 as an example, when the reversing member 12 is connected to the access channel 112 through the middle reversing hole 122, the other two reversing holes 122 can be connected to two outlet channels 111 at the same time, that is, the access channel 112 is respectively connected to the outlet channel 111 serving as the working channel and the spare outlet channel 111.

[0064] When the reversing member 12 rotates forward, the reversing holes 122 move in sequence, the middle reversing hole 122 connects the working flow channel with one of the standby outlet flow channels 111, one of the other two reversing holes 122 connects the access flow channel 112, and the other of the other two reversing holes 122 presses against the inner wall of the reversing cavity 113 to close, so that the access flow channel 112 is connected with one of the outlet flow channels 111. The cycle is repeated in sequence, and the utility model is not described in detail.

[0065] Optionally, the switching member 12 can be set to be spherical. On the one hand, the spherical structure makes the switching member 12 rotate more smoothly to avoid rotation jam. On the other hand, the spherical structure saves the installation space required for the switching member 12, thereby reducing the volume and occupied space of the switching valve 1.

[0066] See also Figure 1 and Figure 4 In some embodiments, in order to facilitate the fluid to flow out of the switching valve 1 smoothly, the switching valve 1 further includes a ventilation component 16, and the ventilation component 16 is arranged in a one-to-one correspondence with the outlet flow channel 111. The ventilation component 16 includes a ventilation housing 161 and a ventilation member 162. The ventilation housing 161 is fixed to the reversing housing 11, and the ventilation housing 161 has a ventilation flow channel 161a, and the ventilation flow channel 161a communicates with the outlet flow channel 111 and the outside of the ventilation housing 161. The ventilation member 162 is arranged in the ventilation flow channel 161a to adjust the on-off of the ventilation flow channel 161a.

[0067] It should be noted that when the fluid conducted by the switching valve 1 is a liquid, some gas will be mixed in the flow process of the liquid. As the liquid continuously flows through the switching valve 1, some gas accumulates inside the switching valve 1, affecting the internal pressure of the switching valve 1, resulting in the inability of the fluid to flow out of the switching valve 1. The ventilation component 16 can connect the inside and outside of the switching valve 1. When the ventilation component 162 conducts the ventilation channel 161a, the outlet channel 111 can exchange gas through the ventilation channel 161a to adjust the pressure in the outlet channel 111, so that the fluid in the outlet channel 111 can flow out smoothly from the outlet end of the outlet channel 111 to avoid obstruction of the fluid flow, thereby ensuring smooth flow of the pipeline. Optionally, the ventilation component 16 can be set as a ventilation valve.

[0068] In some embodiments, when the bypass flow channel 114 is turned on, in order to prevent the fluid from being discharged from the exchange flow channel 161a, in the depth direction of the reversing chamber 113, the setting position of the exchange flow channel 161a relative to the reversing housing 11 is higher than the setting position of the bypass flow channel 114 relative to the reversing housing 11. It should be noted that when the switching valve 1 conducts liquid, the gravity of the liquid is greater than the gravity of the gas, and the flow path of the liquid is usually below the flow path of the gas. Therefore, in this arrangement, in the depth direction of the reversing chamber 113, when the bypass flow channel 114 is below the exchange flow channel 161a, the liquids in the two outlet flow channels 111 are more easily exchanged through the bypass flow channel 114, so as to reduce the pressure difference in the two outlet flow channels 111 and avoid affecting the operation of the exchange flow channel 161a.

[0069] See also Figure 8 and Fig. 9The utility model also provides a fluid processing device 2 using the above-mentioned switching valve 1, so that the fluid processing device 2 has the function of switching the flow direction of the fluid, and can switch the flow direction of the fluid with less effort. At the same time, the fluid processing device 2 can also simplify the pipeline connection to reduce the pressure loss of the pipeline and facilitate the installation and maintenance of the pipeline system. The fluid processing device 2 will be further described below.

[0070] The fluid handling device 2 provided by the utility model comprises a valve seat 21 and the above-mentioned switching valve 1. The reversing housing 11 is fixedly mounted on the valve seat 21. The valve seat 21 has an outflow channel 211 and at least one group of return channels 212, and at least one group of return channels 212 comprises two return channels 212 independently arranged from each other, and each return channel 212 is arranged one-to-one with each outlet channel 111. The reversing housing 11 has an external connection portion 22 connected to the outlet channel 111, and the valve seat 21 has a return connection portion 23 connected to the return channel 212.

[0071] It should be noted that see Figures 9 to 12 , the outflow channel 211 can be used as the outlet end of the fluid treatment device 2, and the access channel 112 of the switching valve 1 can be used as the inlet end of the fluid treatment device 2. Among them, the reflux channel 212 serves as the inlet of the outflow channel 211, and a processing component such as a dryer or a filter can be arranged between the connecting portion 23 of the reflux channel 212 and the external connecting portion 22 of the outflow channel 111 of the switching valve 1, and each processing component can be detachably connected to the external connecting portion 22 and the reflux portion 23 to facilitate the maintenance and replacement of the processing component. Among them, the reflux channels 212 of the valve seat 21 are arranged in a one-to-one correspondence with the number of the outflow channels 111 of the switching valve 1. As an example, when two outflow channels 111 and two reflux channels 212 are respectively provided, it is equivalent to forming two fluid processing channels on the fluid treatment device 2, and the fluid in the switching valve 1 flows out through the outflow channel 111 and enters the processing component for processing, and then enters the outflow channel 211 through the reflux channel 212 from the connecting portion 23 and flows out. With such an arrangement, after the fluid processing device 2 switches the fluid through the switching valve 1, it can further process the fluid (such as drying or filtering) through the processing components between the external connection part 22 and the return part 23 before the fluid flows out through the outflow channel 211 of the fluid processing device 2, so that the fluid flowing out of the fluid processing device 2 meets the corresponding usage requirements.

[0072] At the same time, since two independent fluid processing channels are formed between the outlet channel 111 of the switching valve 1 and the return channel of the valve seat 21, the two independent fluid processing channels can work alternately when the fluid processing device 2 is in use. For example, filters are respectively connected between the two external connection parts 22 and the two return parts 23 of the fluid processing device 2, so that the two filters can work alternately. That is, when one of the filters is in use, the other filter is in an unused state and serves as a spare filter. In this way, when one of the filters fails, the fluid processing device 2 can also import the fluid into another filter for processing through the switching valve 1, so that when the fluid processing device 2 is installed in the pipeline system, it can ensure the continuous and stable operation of the pipeline system and reduce the number of downtime maintenance and downtime of the pipeline system. Of course, the two filters can also work at the same time to improve the filtering and processing efficiency of the fluid. It should be noted that the fluid in the utility model is not limited to water, lubricating oil or gas. The fluid processing device 2 is not limited to connecting two processing components, but can also connect 3, 4 or 5 or more processing components. The processing components are not limited to filters, dryers or dehydrators. The multiple processing components connected to the fluid processing device 2 may be the same processing components or different processing components, and the present invention does not impose any limitation thereto.

[0073] See also Fig.12 In some embodiments, in order to facilitate the connection of the fluid treatment device 2 to the treatment component, the external connection portion 22 is provided with an external connection hole 22a, and the back connection portion 23 is provided with a return hole 23a. The external connection hole 22a and the return hole 23a can be respectively provided with threads, so that the fluid treatment device 2 and the treatment component can be detachably connected. In addition, the external connection portion 22 and the back connection portion 23 can also be connected to the treatment component by various methods such as snapping or gluing, which is not limited by the present invention.

[0074] In some embodiments, in order to save installation space and facilitate quick disassembly and assembly of the processing component, the external hole 22a and the return hole 23a can be coaxially arranged, and the hole wall of the external hole 22a and the hole wall of the return hole 23a are arranged at intervals. It should be noted that, in this arrangement, the external hole 22a and the return hole 23a occupy less space, and the processing component can be connected to the external hole 22a and the return hole 23a at the same time through one installation, so as to improve the installation efficiency.

[0075] In addition, in order to facilitate the coaxial arrangement of the external connection hole 22 a and the return hole 23 a , the inlet flow channel 111 of the switching valve 1 can be arranged in a stacked manner with the outlet flow channel 211 .

[0076] See also Fig.12 In some embodiments, in order to facilitate the flow of fluid in the fluid processing device 2 , the valve seat 21 has a top and a bottom that are relatively arranged, and the external connection portion 22 and the return portion 23 are respectively arranged at the bottom of the valve seat 21 .

[0077] It should be noted that the valve seat 21 may have a top and a bottom that are relatively arranged along the X direction. When the fluid treatment device 2 is in use, the top and the bottom of the valve seat 21 are usually arranged in the vertical direction. In this way, it is equivalent to that the processing components such as the filter or the dryer connected between the external connection part 22 and the return part 23 are below the valve seat 21. On the one hand, when it is necessary to disassemble and assemble these processing components, it can be prevented that pollutants or debris during the disassembly process fall into the fluid treatment device 2, so as to affect the use of the fluid treatment device 2. On the other hand, when the fluid treatment device 2 conducts liquid, the liquid can naturally flow into each processing component by gravity to facilitate the flow of liquid.

[0078] In addition, when the processing component installed at the bottom of the valve seat 21 is a filter, the liquid flowing out of the outlet flow channel 111 of the switching valve 1 flows back to the outlet flow channel 211 along the filtering path from bottom to top, so that the liquid can be filtered more cleanly. Of course, in other embodiments, the external connection portion 22 and the return portion 23 can also be arranged on the top of the valve seat 21, and the utility model does not limit this.

[0079] In some embodiments, in order to save installation space of the fluid processing device 2, the axial direction of the return hole 23a is set along the top of the valve seat 21 pointing to the bottom of the valve seat 21, and the axial direction of the outflow hole 211a of the outflow channel 211 is perpendicular to the axial direction of the return hole 23a.

[0080] With such arrangement, when the fluid treatment device 2 is assembled with the treatment components, the required installation space of the fluid treatment device 2 in the direction from the top of the valve seat 21 to the bottom of the valve seat 21 increases. In order to prevent the required installation space of the fluid treatment device 2 in the direction from the top of the valve seat 21 to the bottom of the valve seat 21 from further increasing, the outflow hole 211a of the outflow channel 211 is axially arranged to be perpendicular to the axial direction of the return hole 23a. In this way, the pipeline externally connected to the outlet end of the fluid treatment device 2 can extend in an axial direction perpendicular to the axial direction of the return hole 23a, which can save the required installation space of the fluid treatment device 2 in the direction from the top of the valve seat 21 to the bottom of the valve seat 21. As an example, the axial direction of the return hole 23a is arranged along the X direction, and the axial direction of the outflow hole 211a of the outflow channel 211 is arranged along the Y direction.

[0081] See also Fig.11 and Fig.12 In some embodiments, in order to prevent the fluid in the outflow channel 211 from flowing out from the reflux hole 23a, the fluid treatment device 2 further includes a non-return assembly 24, which is disposed in the reflux hole 23a. This arrangement can prevent the fluid in the outflow channel 211 from flowing out from the reflux hole 23a and leaking when the fluid treatment device 2 is not equipped with a treatment component.

[0082] It should be noted that the non-return assembly 24 corresponds to the reflux hole 23a one by one, and the non-return assembly 24 includes a non-return housing 241 and a non-return member 242. The non-return housing 241 is fixed in the reflux hole 23a, and the non-return housing 241 has a non-return flow channel 243 connected to the outflow flow channel 211. The non-return member 242 includes a blocking portion 242a and a sliding portion 242b, the blocking portion 242a is fixed to the sliding portion 242b, and the sliding portion 242b is slidably arranged in the non-return flow channel 243, so that the blocking portion 242a can be pressed against or separated from the non-return housing 241. When the sliding portion 242b moves along the bottom of the valve seat 21 to the top of the valve seat 21, the blocking portion 242a is separated from the non-return housing 241, and the non-return flow channel 243 is connected. When the sliding portion 242 b moves along the top of the valve seat 21 toward the bottom of the valve seat 21 , the blocking portion 242 a presses and seals against the non-return housing 241 , and the non-return flow channel 243 is blocked.

[0083] It should be noted that the fluid in the outlet channel 111 can flow into the processing component under the action of gravity or other external forces, and the fluid in the processing component slowly rises to push the sliding portion 242b of the non-return member 242 to move along the bottom of the valve seat 21 toward the top of the valve seat 21, so that the blocking portion 242a of the non-return member 242 is separated from the non-return shell 241, so that the fluid processed by the processing component can enter the outlet channel 211 from the gap between the blocking portion 242a and the non-return shell 241. When the fluid in the outflow channel 211 flows back, the fluid in the outflow channel 211 pushes the check member 242 along the top of the valve seat 21 in the direction toward the bottom of the valve seat 21. Since the check shell 241 restricts the blocking portion 242a of the check member 242 from moving along the top of the valve seat 21 in the direction toward the bottom of the valve seat 21, the blocking portion 242a of the check member 242 and the check shell 241 are always in a pressed state, so that the fluid in the outflow channel 211 cannot flow out from the reflux hole 23a of the outflow channel 211.

[0084] This arrangement can limit the fluid in the outflow channel 211 from flowing out of the reflux hole 23a through the check assembly 24, and can prevent the fluid in the outflow channel 211 from leaking out of the reflux hole 23a when the processing component is disassembled. Optionally, the check assembly 24 can be a one-way valve.

[0085] In some other embodiments, a check assembly 24 may also be disposed in the external connection hole 22 a to prevent the external fluid from entering the outlet flow channel 111 from the external connection hole 22 a , which will not be elaborated in the present invention.

[0086] See also Figures 13 to 15 ,in, Fig.14 and Fig.15 The solid arrows in the figure represent the flow direction of the fluid, and the dotted arrows represent the switching flow direction of the fluid.

[0087] In some embodiments, in order to facilitate the control of the on-off of the fluid processing device 2, the fluid processing device 2 further includes an inflow component 27, and the inflow component 27 includes an inflow housing 271 and an on-off piece 272. The inflow housing 271 is fixed to the valve seat 21, and the inflow housing 271 has an inflow cavity 2711 and a main inflow hole 271a, the inflow cavity 2711 is connected to the access flow channel 112, and the main inflow hole 271a connects the inflow cavity 2711 with the outside of the inflow housing 271. The on-off piece 272 is arranged in the inflow cavity 2711 to adjust the on-off between the main inflow hole 271a and the inflow cavity 2711.

[0088] It should be noted that the inflow chamber 2711 of the inflow component 27 is connected to the access flow channel 112 of the switching valve 1, so as to control the on-off of the fluid treatment device 2 through the on-off piece 272 of the inflow component 27. The inflow housing 271 of the inflow component 27 is fixed to the valve seat 21. The main inflow hole 271a of the inflow housing 271 is used for external fluid to enter the inflow chamber 2711. In order to facilitate the control of external fluid entering the inflow chamber 2711 through the main inflow hole 271a, a movable on-off piece 272 is provided in the inflow chamber 2711 of the inflow housing 271, so as to use the on-off piece 272 to open or close the main inflow hole 271a, and control the on-off of the main inflow hole 271a and the inflow chamber 2711. When the on-off piece 272 separates the main inflow hole 271a from the inflow chamber 2711, the external fluid cannot enter the inflow chamber 2711. When the on-off member 272 connects the main inlet hole 271a with the inflow chamber 2711, the external fluid can enter the inflow chamber 2711 through the main inlet hole 271a, then enter the outlet channel 111 through the reversing chamber 113, and finally flow out from the outlet hole 211a of the outlet channel 211. The on-off member 272 can adjust the position state in the inflow chamber 2711 manually or electrically. As an example, the inflow component 27 can be a regulating valve (such as a pressure regulating valve or a flow regulating valve) or a stop valve, which is not limited by the present invention.

[0089] In some embodiments, the pipeline system used in the fluid processing device 2 has usage requirements for the temperature of the fluid. For example, in the lubrication system of the compressor, the oil temperature of the lubricating oil needs to be controlled within a certain temperature range to prevent the lubricating oil from deteriorating and failing, and to avoid overheating of the equipment, which affects the normal operation and service life of the compressor. In this case, the inflow component 27 has a temperature control function to prevent the fluid exceeding the operating temperature from entering the fluid processing device 2.

[0090] At this time, the inflow housing 271 not only has an inflow cavity 2711, but also has a temperature control cavity 2712 and an exhaust hole 271b connected to the temperature control cavity 2712, and the temperature control cavity 2712 is connected between the main inflow hole 271a and the inflow cavity 2711. Among them, the switch 272 has a temperature threshold, and when the temperature of the switch 272 is higher than the temperature threshold, the switch 272 separates the temperature control cavity 2712 from the inflow cavity 2711. When the temperature of the switch 272 is lower than the temperature threshold, the switch 272 connects the temperature control cavity 2712 with the inflow cavity 2711.

[0091] With such arrangement, the external fluid enters the temperature control chamber 2712 through the main inlet hole 271a. When the temperature of the fluid in the temperature control chamber 2712 is higher than the temperature sensing threshold of the switch 272, the switch 272 isolates the temperature control chamber 2712 from the inflow chamber 2711, so that the fluid in the temperature control chamber 2712 is discharged from the discharge hole 271b. The discharge hole 271b can be connected to a cooling device to cool down this part of the fluid.

[0092] When the temperature of the fluid in the temperature control chamber 2712 is lower than the temperature sensing threshold of the switch 272, the switch 272 conducts the temperature control chamber 2712 and the inflow chamber 2711. At this time, a part of the fluid in the temperature control chamber 2712 can still enter the cooling device through the discharge hole 271b to cool down, and another part of the fluid in the temperature control chamber 2712 can enter the inflow chamber 2711 and flow to the reversing chamber 113, the outlet channel 111 and the outflow channel 211 in sequence, and be discharged through the outflow hole 211a, so that the fluid processing device 2 can provide fluid with a suitable temperature to other devices.

[0093] Thus, when the temperature of the fluid entering the fluid treatment device 2 is too high, the inflow component 27 with a temperature control function can automatically block the flow path between the temperature control chamber 2712 and the inflow chamber 2711, thereby controlling the temperature of the fluid entering the reversing chamber 113, so that the temperature of the fluid flowing out of the outflow channel 211 is moderate, so as to meet the use requirements of the external device of the fluid treatment device 2. At the same time, the fluid treatment device 2 configured in this way does not need to set up additional temperature detection points and temperature detection equipment, which can simplify the structure of the fluid treatment device 2 and reduce the volume of the fluid treatment device 2.

[0094] As an example, in order to facilitate the on-off member 272 to control the on-off of the temperature control chamber 2712 and the inflow chamber 2711 according to the temperature of the fluid. A connecting hole is provided between the temperature control chamber 2712 and the inflow chamber 2711. The on-off member 272 includes a sleeve 272a and a temperature sensing member 272b. The sleeve 272a has a reflux hole 23a corresponding to the connecting hole. The temperature sensing member 272b has a temperature threshold, so that the temperature sensing member 272b can gradually expand or contract according to the temperature change of the fluid. One end of the temperature sensing member 272b is connected to the sleeve 272a, and the other end of the temperature sensing member 272b is pressed against the inner wall of the inflow chamber 2711.

[0095] When the external fluid enters the temperature control chamber 2712 through the main inlet hole 271a, if the temperature of the fluid in the temperature control chamber 2712 is higher than the temperature threshold of the temperature sensing element 272b, the temperature sensing element 272b expands to push the sleeve 272a to move forward, so that the return hole 23a of the sleeve 272a is misaligned with the connecting hole, and the fluid in the temperature control chamber 2712 cannot enter the inflow chamber 2711. If the temperature of the fluid in the temperature control chamber 2712 is lower than the temperature threshold of the temperature sensing element 272b, the temperature sensing element 272b contracts to drive the sleeve 272a to move in the opposite direction, so that the return hole 23a of the sleeve 272a is aligned with the connecting hole, and the fluid in the temperature control chamber 2712 can enter the inflow chamber 2711.

[0096] In order to facilitate the reciprocating movement of the sleeve 272a, a spring (not shown in the figure) may be further provided between the sleeve 272a and the inner wall of the inflow chamber 2711. For example, when the temperature sensing element 272b expands, the temperature sensing element 272b pushes the sleeve 272a to move forward to compress the spring. When the temperature sensing element 272b contracts, the spring pushes the sleeve 272a to move in the opposite direction through the elastic restoring force, and the reciprocating movement of the sleeve 272a is achieved by means of the spring.

[0097] It should be noted that the temperature threshold of the temperature sensing element 272b can be 35 degrees, 40 degrees, 50 degrees, 55 degrees, 70 degrees or 80 degrees, etc. The temperature threshold of the temperature sensing element 272b can be set according to the working conditions required for the assembly of the fluid processing device 2, and the present utility model does not impose any restrictions.

[0098] In some cases, as the external piping system of the fluid processing device 2 runs for a long time, the heat generated in the system causes the temperature of the fluid in the pipeline to gradually increase. At this time, the temperature of the fluid entering the temperature control chamber 2712 through the main inlet hole 271a gradually increases, the expansion size of the temperature sensing element 272b gradually increases, and the temperature sensing element 272b pushes the sleeve 272a to gradually move in the opposite direction, so that the overlapping area between the return hole 23a of the sleeve 272a and the connecting hole gradually decreases, until the fluid temperature in the temperature control chamber 2712 exceeds the temperature threshold of the temperature sensing element 272b, the return hole 23a of the sleeve 272a is completely misaligned with the connecting hole, the fluid in the temperature control chamber 2712 cannot enter the inlet chamber 2711, and the fluid processing device 2 cannot provide fluid of suitable temperature to other devices.

[0099] In this case, in order to facilitate cooling of the fluid that has entered the inflow chamber 2711, the inflow housing 271 also has a sub-inflow hole 271c connected to the inflow chamber 2711, and the on-off piece 272 can also adjust the on-off of the sub-inflow hole 271c and the inflow chamber 2711. As an example, the sleeve 272a of the on-off piece 272 is provided with a through hole that matches the sub-inflow hole 271c. The sub-inflow hole 271c can be connected to a fluid cooling device. When the on-off piece 272 connects the sub-inflow hole 271c with the inflow chamber 2711, the cooling fluid in the fluid cooling device can enter the inflow chamber 2711 through the sub-inflow hole 271c to mix with the fluid in the inflow chamber 2711, cool the fluid in the inflow chamber 2711, and enable the outflow component to flow out a fluid of a suitable temperature. Optionally, the inflow component 27 can be a temperature control valve.

[0100] See also Fig.15 In some embodiments, in order to facilitate the fluid to flow out smoothly from the fluid treatment device 2, the inner wall of the outflow channel 211 has a guide portion 211b, and the guide portion 211b is an arc-shaped transition from the return hole 23a to the outflow hole 211a of the outflow channel 211. In this way, when the fluid flows in the outflow channel 211, the guide portion 211b can be used to guide the fluid in the outflow channel 211 to the outflow hole 211a of the outflow channel 211 for discharge. Optionally, the guide portion 211b can be an arc-shaped concave surface, an arc-shaped convex surface, a wavy surface or an inclined surface, etc., and the utility model does not limit it.

[0101] See also Fig.16 and Fig.17 In some embodiments, in order to facilitate the flow of fluid in the fluid treatment device 2, the inflow housing 271 is fixed to the top of the valve seat 21, and the reversing housing 11 is fixed to the side wall of the valve seat 21 to be placed between the top of the valve seat 21 and the bottom of the valve seat 21. This arrangement is equivalent to the inflow chamber 2711 being above the reversing chamber 113 in the direction from the top of the valve seat 21 to the bottom of the valve seat 21, and the reversing chamber 113 being above the outlet flow channel 111, so that the fluid in the inflow chamber 2711 can flow into the reversing chamber 113 and the outlet flow channel 111 in turn by gravity, ensuring smooth flow of the fluid. At the same time, this arrangement can also save the space occupied by the fluid treatment device 2 in the horizontal plane, so as to save the horizontal installation space.

[0102] In some embodiments, in order to avoid connection interference of the external pipelines of the fluid processing device 2, the main inlet hole 271a and the outlet hole 271b are arranged on the same side of the temperature control chamber 2712, and the sub-inlet hole 271c and the main inlet hole 271a are arranged on opposite sides of the inlet chamber 2711. Optionally, the axial direction of the main inlet hole 271a, the axial direction of the outlet hole 271b and the axial direction of the sub-inlet hole 271c are arranged parallel to each other, and the axial direction of the main inlet hole 271a is perpendicular to the direction from the top of the valve seat 21 to the bottom of the valve seat 21. Optionally, in the direction from the top of the valve seat 21 to the bottom of the valve seat 21, the outflow hole 211a and the sub-inflow hole 271c of the outflow channel 211 are arranged in a staggered manner.

[0103] With this arrangement, the inflow assembly 27 can be connected to pipelines in multiple directions, which facilitates the connection of the fluid treatment device 2 with pipelines in different directions, so as to avoid connection interference of pipelines external to the fluid treatment device 2. At the same time, it can also ensure that the pipelines of the fluid treatment device 2 are neatly connected, so that the fluid treatment device 2 can be easily disassembled and repaired with pipelines.

[0104] In some embodiments, in order to simplify the pipeline connection of the fluid processing device 2, the valve seat 21, the reversing shell 11 and the inflow shell 271 of the fluid processing device 2 can be integrated by fixed connection to form a valve body. At the same time, the main inlet hole 271a, the inflow chamber 2711, the reversing chamber 113, each outlet channel 111, the outflow channel 211 and the outflow hole 211a are connected in sequence to form a fluid channel in the valve body. Therefore, the utility model can integrate the independent components into one through the fluid processing device 2, without the need to assemble the independent components separately, which can save assembly space, reduce the connecting pipelines between the independent components, reduce assembly time, reduce pipeline pressure loss, and facilitate maintenance.

[0105] It should be noted that the valve seat 21, the reversing housing 11, the inflow housing 271 and other housings can be fixed as a whole by welding, bolting, bonding and other methods, so as to facilitate the processing and assembly of various parts. In other embodiments, the valve seat 21, the reversing housing 11 and the inflow housing 271 can also be integrally formed, so as to form a complete and sealed flow channel in the valve body, reduce the leakage points of the valve body, and make it difficult for the fluid flowing between the valve seat 21, the reversing housing 11 and the inflow housing 271 and other housings to flow out from the gaps between the valve seat 21, the reversing housing 11 and the inflow housing 271 and other housings.

[0106] It should also be noted that at each flow channel port or other hole position of the fluid processing device 2, when the flow channel or hole position is not in use, a cover plate, blind flange or other components can be set at the position to achieve the closure of the flow channel or hole position.

[0107] See you later Figure 8In some embodiments, the fluid processing device 2 further includes an outflow pressure connection portion 26, and the outflow pressure connection portion 26 is connected to the outflow channel 211. It should be noted that the fluid processing device 2 can be connected to a pressure detector (such as an oil pressure detector) through the outflow pressure connection portion 26. In this way, it can be determined whether the pressure of the fluid flowing out of the fluid processing device 2 meets the use requirements by detecting the pressure of the fluid flowing out of the fluid processing device 2.

[0108] In other embodiments, the fluid handling device 2 includes an inflow pressure connection portion 25, which is connected to the outlet flow channel 111 and is arranged one-to-one with the outlet flow channel 111. It should be noted that the fluid handling device 2 can be connected to a pressure detector (such as an oil pressure detector) through the inflow pressure connection portion 25. When the fluid handling device 2 includes both the inflow pressure connection portion 25 and the outlet pressure connection portion 26, the pressure drop of the fluid handling device 2 can also be determined based on the fluid pressure value of the inflow pressure connection portion 25 and the fluid pressure value of the outlet pressure connection portion 26, thereby determining whether there is fluid leakage at certain positions of the fluid handling device 2.

[0109] In some embodiments, see Fig.18 and Fig.19 The fluid treatment device 2 further includes a treatment component 29. The treatment component 29 is connected between the external connection portion 22 and the return connection portion 23 of the fluid treatment device 2, so as to facilitate the disassembly, assembly and replacement of the treatment component 29.

[0110] The processing component 29 includes a filter assembly 291, and the filter assembly 291 includes a filter housing 291a and a filter core 291b. The filter housing 291a has a filter cavity, a filter inlet and a filter outlet, and the filter inlet and the filter outlet are respectively connected to the filter cavity. The filter core 291b is arranged in the filter cavity. The filter inlet of the filter housing 291a is connected to the external connection part 22, and the filter outlet of the filter housing 291a is connected to the reconnection part 23.

[0111] When in use, the fluid enters the inflow chamber 2711 through the inflow component 27 of the fluid treatment device 2, enters the reversing chamber 113 from the inflow chamber 2711 through the access channel 112, and enters one of the outlet channels 111 through the conduction of the reversing member 12, enters the processing component 29 from the external connection part 22 of the outlet channel 111, and after being filtered or dried by the processing component 29, enters the outflow channel 211 from the processing component 29 through the return part 23 of the reflux channel 212 to flow out of the fluid treatment device 2.

[0112] When the fluid treatment device provided by the utility model is applied to the oil circuit system, the treatment component 29 can be a filter, and the inflow component 27 can be a temperature control valve. Therefore, when the fluid treatment device 2 is connected to the oil circuit system, the lubricating oil is treated by the fluid treatment device 2 to obtain clean and low-temperature lubricating oil.

[0113] The fluid treatment device 2 provided by the utility model can simplify the pipeline connection to facilitate the installation and maintenance of the pipeline. At the same time, by combining the fluid treatment device 2 with at least two treatment components 29 (such as filters), one of the treatment components 29 can be replaced while the pipeline system is running, so as to reduce the number of downtime maintenance of the pipeline system and ensure the operating efficiency of the pipeline system.

Claims

1. A switching valve, characterized in that: include: The reversing housing (11) has at least one group of outlet flow channels (111), the at least one group of outlet flow channels (111) comprising two outlet flow channels (111) independently arranged from each other, the reversing housing (11) further has an inlet flow channel (112) and a reversing cavity (113), each of the outlet flow channels (111) and the inlet flow channel (112) being respectively connected to the reversing cavity (113); A reversing member (12) is installed in the reversing cavity (113) and is movable in the reversing cavity (113); A driving member (13) connected between the reversing housing (11) and the reversing member (12) to drive the reversing member (12) to reciprocate in the reversing chamber (113) so that the inlet flow channel (112) switches between the two outlet flow channels (111); The reversing housing (11) further comprises a bypass flow channel (114) connected between the two outlet flow channels (111), and the switching valve further comprises an adjusting member (14), wherein the adjusting member (14) is connected to the bypass flow channel (114) to adjust the on-off state of the bypass flow channel (114); during the movement of the reversing member (12), the adjusting member (14) conducts the bypass flow channel (114).

2. The switching valve according to claim 1, characterized in that: The reversing housing (11) has an adjusting chamber (115) connected to the bypass flow channel (114), the adjusting member (14) is arranged in the adjusting chamber (115), and the adjusting member (14) can reciprocate in the adjusting chamber (115) and the bypass flow channel (114) to adjust the on and off of the bypass flow channel (114).

3. The switching valve according to claim 2, characterized in that: The reversing housing (11) has an adjustment hole (116) communicating the outside of the reversing housing (11) with the adjustment chamber (115), and the adjustment member (14) comprises: A switching portion (141) is disposed in the regulating chamber (115); and An operating portion (142) connected to the on-off portion (141) and extending from the adjustment hole (116) to the outside of the reversing housing (11); The operating portion (142) is subjected to force to drive the on-off portion (141) to reciprocate in the regulating chamber (115) and the bypass flow channel (114).

4. The switching valve according to claim 3, characterized in that: The adjusting member (14) further comprises a sealing portion (143), wherein the sealing portion (143) is fixedly arranged on any one of the switching portion (141) and the operating portion (142), and the sealing portion (143) is detachably connected to the adjusting hole (116).

5. The switching valve according to claim 4, characterized in that: The inner wall of the adjustment hole (116) is provided with an internal thread, and the sealing portion (143) is provided with an external thread matching the internal thread; The operating part (142) is rotated to enable the on-off part (141) to reciprocate in the regulating chamber (115) and the bypass flow channel (114) through threaded engagement.

6. The switching valve according to claim 1, characterized in that: The driving member (13) drives the reversing member (12) to reciprocate in the reversing chamber (113) to switch the conduction of the incoming flow channel (112) between the two outgoing flow channels (111).

7. The switching valve according to claim 6, characterized in that: The reversing housing (11) has a mounting hole (117) communicating the outside of the reversing housing (11) with the reversing cavity (113), and the driving member (13) comprises: A connecting portion (131) rotatably connected to the mounting hole (117) and connected to the reversing member (12); A force-applying portion (132) is fixedly mounted on the connecting portion (131) and extends from the mounting hole (117) to the outside of the reversing housing (11); The force-applying portion (132) is rotated under force, so that the connecting portion (131) drives the reversing member (12) to reciprocate in the reversing cavity (113).

8. The switching valve according to claim 6, characterized in that: The reversing member (12) is provided with a cavity (121) and two reversing holes (122) communicating with the cavity (121); the two reversing holes (122) are arranged at intervals along the circumference of the reversing member (12) so as to connect the incoming flow channel (112) with one of the two outgoing flow channels (111) during the rotation of the reversing member (12); Alternatively, the switching member (12) is provided with a cavity (121) and three switching holes (122) connected to the cavity (121), and the switching holes (122) are arranged at intervals along the circumference of the switching member (12) so as to connect the incoming flow channel (112) with at least one of the two outgoing flow channels (111) during the rotation of the switching member (12).

9. The switching valve according to claim 1, characterized in that: The driving member (13) drives the reversing member (12) to slide back and forth in the reversing chamber (113) so as to switch the conduction of the incoming flow channel (112) between the two outgoing flow channels (111).

10. The switching valve according to claim 1, characterized in that: The inner diameter of the bypass flow channel (114) is smaller than the inner diameter of each of the outlet flow channels (111).

11. The switching valve according to claim 1, characterized in that: The switching valve further comprises a positioning assembly (15), wherein the positioning assembly (15) comprises: A positioning fitting, fixedly mounted on the reversing housing (11); and The positioning member is fixedly mounted on the driving member (13) and is detachably connected to the positioning matching member to fix the relative position of the driving member (13) and the reversing housing (11).

12. The switching valve according to claim 1, characterized in that: The switching valve further comprises a ventilation component (16), wherein the ventilation component (16) is arranged in a one-to-one correspondence with the outlet flow channel (111), and the ventilation component (16) comprises: A ventilation housing (161) is fixedly mounted on the reversing housing (11), wherein the ventilation housing (161) has a ventilation flow channel (161a), wherein the ventilation flow channel (161a) communicates with the outlet flow channel (111) and the outside of the ventilation housing (161); The ventilation component (162) is arranged in the ventilation channel (161a) to adjust the opening and closing of the ventilation channel (161a).

13. The switching valve according to claim 12, characterized in that: In the depth direction of the reversing chamber (113), the setting position of the exchange flow channel (161a) relative to the reversing housing (11) is higher than the setting position of the bypass flow channel (114) relative to the reversing housing (11).

14. A fluid processing device, characterized in that: comprising a valve seat (21) and a switching valve according to any one of claims 1 to 13; The reversing housing (11) is fixedly mounted on the valve seat (21); The valve seat (21) has an outflow channel (211) and at least one group of return channels (212), wherein the at least one group of return channels (212) includes two return channels (212) that are independently arranged, and each of the return channels (212) is arranged in a one-to-one correspondence with each of the outflow channels (111); The valve seat (21) has an external connection portion (22) connected to the outlet flow channel (111), and the valve seat (21) has a return portion (23) connected to the return channel (212).

15. The fluid treatment device according to claim 14, characterized in that: The external connection part (22) is provided with an external connection hole (22a), and the return part (23) is provided with a return hole (23a). The external connection hole (22a) and the return hole (23a) are coaxially arranged, and the hole wall of the external connection hole (22a) and the hole wall of the return hole (23a) are spaced apart.

16. The fluid treatment device according to claim 15, characterized in that: The valve seat (21) has a top and a bottom that are arranged opposite to each other, and the external connection portion (22) and the return portion (23) are respectively arranged at the bottom (21b) of the valve seat.

17. The fluid treatment device according to claim 14, characterized in that: The fluid treatment device further comprises a non-return assembly (24), wherein the non-return assembly (24) comprises: A non-return housing (241) is fixedly mounted on the valve seat (21), and the non-return housing (241) has a non-return flow channel (243) connected to the reflux channel (212); The anti-return component (242) comprises a blocking portion (242a) and a sliding portion (242b), wherein the blocking portion (242a) is fixedly arranged on the sliding portion (242b), and the sliding portion (242b) is slidably arranged in the anti-return flow channel (243), so that the blocking portion (242a) can be pressed against or separated from the anti-return housing (241) to adjust the opening and closing of the anti-return flow channel (243).

18. The fluid treatment device according to claim 14, characterized in that: The fluid treatment device comprises an inflow pressure connection portion (25), wherein the inflow pressure connection portion (25) is connected to the outflow channel (111) and is arranged in a one-to-one correspondence with the outflow channel (111); And / or, the fluid processing device comprises an outflow pressure connection portion (26), and the outflow pressure connection portion (26) is connected to the outflow channel (211).

19. The fluid treatment device according to claim 14, characterized in that: The fluid treatment device further comprises an inflow component (27), wherein the inflow component (27) comprises: an inflow housing (271) fixedly mounted on the valve seat (21), the inflow housing (271) comprising an inflow chamber (2711) and a main inflow hole (271a), the inflow chamber (2711) being in communication with the access flow channel (112), the main inflow hole (271a) being in communication with the inflow chamber (2711) and the outside of the inflow housing (271); and The on-off piece (272) is arranged in the inflow cavity (2711) to adjust the on-off between the main inlet hole (271a) and the inflow cavity (2711).

20. The fluid treatment device according to claim 19, characterized in that: The inflow housing (271) further comprises a temperature control chamber (2712) and a discharge hole (271b) communicating with the temperature control chamber (2712); the temperature control chamber (2712) is connected between the main inflow hole (271a) and the inflow chamber (2711); The on-off piece (272) has a temperature threshold. When the temperature of the on-off piece (272) is higher than the temperature threshold, the on-off piece (272) isolates the temperature control chamber (2712) from the inflow chamber (2711); when the temperature of the on-off piece (272) is lower than the temperature threshold, the on-off piece (272) connects the temperature control chamber (2712) with the inflow chamber (2711).

21. The fluid treatment device according to claim 20, characterized in that: The inflow housing (271) further comprises a sub-inflow hole (271c) connected to the inflow chamber (2711), and the on-off piece (272) regulates the on-off between the sub-inflow hole (271c) and the inflow chamber (2711).

22. The fluid treatment device according to claim 21, characterized in that: The main inlet hole (271a) and the outlet hole (271b) are arranged on the same side of the temperature control chamber (2712), and the sub-inlet hole (271c) and the main inlet hole (271a) are arranged on opposite sides of the inlet chamber (2711); And / or, the axial direction of the main inlet hole (271a), the axial direction of the outlet hole (271b) and the axial direction of the sub-inlet hole (271c) are arranged parallel to each other, and the axial direction of the main inlet hole (271a) is perpendicular to the top (21a) of the valve seat and points to the bottom (21b) of the valve seat; and / or, in a direction from the top (21a) of the valve seat to the bottom (21b) of the valve seat, the outflow hole (211a) of the outflow channel (211) and the sub-inflow hole (271c) are arranged in a staggered manner; And / or, the inflow housing (271) is fixedly mounted on the top (21a) of the valve seat, and the reversing housing (11) is fixedly mounted on the side wall of the valve seat (21), so that the fluid in the access flow channel (112) flows into the reversing chamber (113) along the direction from the top (21a) of the valve seat to the bottom (21b) of the valve seat.

23. The fluid treatment device according to claim 14, characterized in that: The fluid treatment device also includes a treatment component, which is provided with a treatment inlet and a treatment outlet, the treatment inlet of the treatment component is connected to the external connection part (22), and the treatment outlet of the treatment component is connected to the return part (23).

Images