CN112619269A

CN112619269A - Connecting device of filter, filtering system and operation method of filtering system

Info

Publication number: CN112619269A
Application number: CN202011382459.4A
Authority: CN
Inventors: 贾建东; 张文鑫
Original assignee: Hangzhou Cobetter Filtration Equipment Co Ltd
Current assignee: Hangzhou Cobetter Filtration Equipment Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-04-09
Anticipated expiration: 2040-11-30
Also published as: CN112619269B

Abstract

The invention relates to a connecting device of a filter, which comprises a fixing piece, a retaining piece and a rotary driving piece, wherein the fixing piece is used for fixing the connecting device in an external pipeline or equipment, the retaining piece is used for retaining the filter, a motion conversion mechanism is formed between the rotary driving piece and the retaining piece, the motion conversion mechanism converts the rotary motion of the rotary driving piece into the axial motion of the retaining piece and drives the filter to axially move upwards or downwards so that a pipe fitting of the filter and a joint of the fixing piece are in sealed connection or disconnection, the motion conversion mechanism comprises a driving block and a driving chute which are positioned between the retaining piece and the rotary driving piece, the driving block is inserted into the driving chute, and when the rotary driving piece rotates, the driving block and the driving chute generate relative motion in the axial direction; the connecting device has the advantages of simple structure, few components, easier processing and manufacture, lower cost, small overall occupied space of the connecting device, and simple and convenient replacement operation of the filter in the filter system formed by the connecting device and the filter.

Description

Connecting device of filter, filtering system and operation method of filtering system

Technical Field

The invention relates to the technical field of filtration, in particular to a connecting device of a filter, a filtering system and an operation method of the filtering system.

Background

Japanese patent JP4234938B2 discloses a connector device 100 for a filter, which connector device 100 is used to connect and disconnect the filter to and from an external pipe. The connector device includes a fixing member having a plurality of pipe members on a lower surface thereof, the plurality of pipe members being sealingly connectable to or disconnectable from respective ports of the filter, a movable table having a flange holding portion for holding the filter so that the connector of the filter and the pipe members on the fixing member are aligned, a guide mechanism, and an operation lever.

The operating lever has one end pivotally connected to the fixed member and the other end having a handle, and further has a slide groove in which a pin fixed to the movable table moves.

The guide mechanism comprises 4 elongated members, the 4 members being divided into two groups, one group being 2, located on each side of the connector means, each two elongated members forming a pivotable connection at a central intersection and forming an X-shape; two ends of the 4 slender components are connected with pins, two side surfaces of the same end of the fixed component and the movable working platform are provided with horizontal grooves, and the pin connected with one end of the slender component can horizontally move in the horizontal grooves.

When the operating rod is pivoted, the pin fixed on the movable workbench moves in the sliding groove on the operating rod, the pin connected to one end of the elongated member moves horizontally in the horizontal groove, the included angle between the two elongated members in the X shape is closed or opened, so that the movable workbench is guided to move upwards or downwards, and a plurality of pipe fittings penetrating through the lower surface of the fixing piece can be in sealing connection or disconnection with the corresponding interfaces of the filter.

As shown in fig. 1 to 4, both sides of the above-mentioned fixed member and movable table are connected and supported by a connecting rod 1, the connecting rod 1 is composed of an outer rod 11, a sliding rod 12 and a spring 13, the outer rod 11 has a groove 11A in the inside of one end, the spring 13 is disposed in the groove 11A, one end of the sliding rod 12 is partially inserted into the groove 11A, one end of the spring 13 is contacted against the end of the groove 11A, and the other end is contacted against the end of the sliding rod 12 inserted into the groove 11A. When the tie bar 1 is attached, the spring 13 is compressed, one end of the slide rod 12 is inserted into a hole on one side of the fixed member or the movable table, then the compression of the spring 13 is gradually released, the spring 13 is extended, and the other end of the outer rod 11 is inserted into a hole on the other side of the fixed member or the movable table, thereby completing the attachment of the tie bar 1.

This connecting rod 1 constitutes the component many, the installation is troublesome, it is time-consuming, and the existence of spring 13 and outer pole 11 and the setting of slide bar 12 components of a whole that divides in connecting rod 1, connecting rod 1 is relatively poor to the supporting role of mounting and movable workstation both sides, the holistic structural stability of connector device after the equipment is accomplished is not good, easily rock in the horizontal direction, cause the situation that a little dislocation appears in mounting and movable workstation, when mounting and movable workstation take place the dislocation, produce the friction between the pipe fitting on the mounting and the joint on the filter, damage pipe fitting or joint easily.

Even there is locking device 2 on the handle of action bars, locking device 2 includes first buckle 21, second buckle 22 and two springs 23, and first buckle 21 is equipped with two spring slots 21A, and two springs 23 are arranged in two spring slots 21A respectively, and it has the mounting hole to open on the handle, and the inboard of the position that the mounting hole corresponds is arranged in to first buckle 21, and the outside of the position that the mounting hole corresponds is arranged in to second buckle 22, and rethread screw 24 is with first buckle 21 and second buckle 22 fuse.

When the filter is replaced, the upper ends of the first buckle 21 and the second buckle 22 are pressed, the spring 23 is compressed, the upper ends of the first buckle 21 and the second buckle 22 are far away from the top cover of the filter, the operating rod pivots clockwise, the movable workbench moves downwards, the pipe fitting on the fixing piece is separated from the joint on the filter, the filter is taken down from the movable workbench, a new filter is fixed on the movable workbench, the upper ends of the first buckle 21 and the second buckle 22 are pressed, the spring 23 is compressed, the operating rod pivots anticlockwise, the fixing piece drives the filter to move upwards until the pipe fitting on the fixing piece and the joint on the filter form a sealing connection, the compression on the spring 23 is released, the spring 23 returns to the original length, the upper ends of the first buckle 21 and the second buckle 22 prop against the edge of the top cover of the filter, and the locking device 2 locks the operating rod, even if the feeding flow rate is large, the filter cannot be impacted to cause the filter to move downwards, and the phenomenon that the operating rod is undesirably pivoted clockwise due to misoperation can be avoided.

The locking device 2 has a plurality of components, the assembly is inconvenient, the first buckle 21 and the second buckle 22 are screwed and connected into a whole through the screw 24, the screwing degree of the screw 24 is not easy to grasp, the screw 24 is screwed too tightly, the activity of the spring 23 is poor, and the locking device 2 cannot work normally; the screw 24 is too loose and the locking device 2 cannot be tightened and cannot effectively lock the operating rod. To ensure proper functioning of the locking device 2, multiple trial and error attempts are required to ensure proper tightening of the screw 24. Further, after the spring 23 is pressed several times, the elasticity is deteriorated, resulting in that the locking device cannot be normally locked.

In addition, the number of parts of the guide mechanism of the connector device is excessive, and the processing and manufacturing are troublesome. During assembly, 4 elongated members are connected through pins to form 2X-shaped forks, and then the 2X-shaped forks are connected to the fixed part and the movable workbench through pins respectively, so that the installation steps are complicated, the operation is inconvenient, and the time consumption is long.

Therefore, it is desirable to provide a new connector for a filter, which solves the problems of the prior connector, such as more parts, complicated processing, manufacturing and installation processes, and time consumption, and improves the structural stability of the connector, thereby preventing the abrasion between the pipe and the joint. Also, a filtration system including the connection device and a method of operating the same are provided.

Disclosure of Invention

The invention aims to provide a connecting device of a filter, which has simpler structure, fewer parts, easier processing and manufacturing and more convenient installation and operation and can solve the problems of poor structural stability and abrasion between a pipe fitting and a joint of the connecting device of the traditional filter. Meanwhile, the filter system comprising the connecting device and the operation method thereof are also provided, and the filter system is convenient in operation process, simple in steps and not easy to make mistakes.

In order to achieve the purpose, the invention adopts the following technical scheme:

a connecting device of a filter comprises a fixing piece, a retaining piece and a rotary driving piece;

the fixing piece is used for fixing the connecting device in an external pipeline or equipment and is provided with at least two joints, one end of each joint is hermetically connected with the external pipeline or equipment, and the other end of each joint is used for forming detachable sealing connection with at least two pipe fittings of the filter;

the holder is used for holding the filter;

the rotary drive member is closer to the filter than the fixed member;

the connecting device also comprises a motion conversion mechanism acting between the rotary driving piece and the retaining piece, wherein a central rotating shaft of the rotary driving piece is parallel to the motion direction of the filter, and the motion conversion mechanism converts the rotary motion of the rotary driving piece into the axial motion of the retaining piece and drives the filter to move axially upwards or downwards so that at least two pipe fittings of the filter are detachably and hermetically connected or disconnected with at least two joints of the fixing piece.

The invention provides a connecting device of a filter, which comprises a fixing piece, a retaining piece and a rotary driving piece, wherein the fixing piece is used for fixing the connecting device in an external pipeline or equipment, the retaining piece is used for retaining the filter, a motion conversion mechanism is formed between the rotary driving piece and the retaining piece, the motion conversion mechanism converts the rotary motion of the rotary driving piece into the axial motion of the retaining piece, and drives the filter to move axially upwards or downwards so that at least two pipe fittings of the filter and at least two joints of the fixing piece are in detachable sealing connection or disconnection. The connecting device has the advantages of simple structure, few components, easier processing and manufacture, lower cost, and simpler and more convenient installation steps of the connecting device and replacement operation of the filter. The rotary driving piece of the connecting device is closer to the filter relative to the fixing piece, and the space occupied by the whole connecting device can be reduced.

Further, the holder is movably disposed inside the rotary driving member.

The retaining member is movably arranged inside the rotary drive member, also to further reduce the space occupied by the coupling device.

Further, the fixing member, the holding member and the rotary driving member are coaxially positioned.

The fixing piece, the retaining piece and the rotary driving piece are coaxially positioned, namely the central axes of the fixing piece, the retaining piece and the rotary driving piece are overlapped, the retaining piece can be guaranteed to drive the filter and move upwards or downwards along the common central axis of the fixing piece and the filter, the pipe fitting of the filter and the joint of the fixing piece are prevented from being staggered, reliable sealing connection can be formed between the pipe fitting and the joint, and the pipe fitting or the joint is prevented from being abraded.

Further, the motion conversion mechanism comprises a driving block and a driving chute, the driving block is positioned in one of the holding piece and the rotary driving piece, the driving chute is positioned in the other of the holding piece and the rotary driving piece, the driving block is inserted into the driving chute, and when the rotary driving piece rotates, the driving block and the driving chute generate relative motion in the axial direction to drive the holding piece to move axially upwards or downwards.

The motion conversion mechanism comprises a driving block and a driving chute, the driving block is inserted into the driving chute, and when the rotary driving piece rotates, the driving block and the driving chute generate relative motion in the axial direction, so that the holding piece and the filter are driven to move upwards or downwards axially. The motion conversion mechanism has few components and simple structure, only one of the holding piece and the rotary driving piece is provided with the driving block, and the other one is provided with the driving chute, so that the rotary motion of the rotary driving piece can be converted into the axial motion of the holding piece and the filter, and the processing and the manufacturing are easy.

Furthermore, the height of the driving chute in the axial direction is not less than the installation stroke of the connector of the fixing piece inserted into the pipe fitting of the filter, and the included angle between the chute wall of the driving chute and the central rotating shaft of the rotary driving piece is 30-60 degrees.

The height of the driving chute in the axial direction is not less than the installation stroke of the connector of the fixing piece inserted into the pipe fitting of the filter, and the driving chute can ensure that the pipe fitting of the filter and the connector of the fixing piece are sealed after the driving block and the driving chute finish relative axial movement.

When the included angle between the groove wall of the driving chute and the central rotating shaft of the rotary driving piece is 30-60 degrees, the balance between the driving block and the driving chute along the groove wall direction of the driving chute, the relative sliding distance and the external driving force for driving the rotary driving piece to rotate can be realized; when the included angle is larger, the labor is saved, but the relative sliding distance between the two is longer, and when the included angle is smaller, the driving force is larger, and the operation is laborious, but when the relative sliding distance between the two is reduced and the included angle is set to be 30-60 degrees, the relative sliding distance between the two is not too long, and the rotary driving piece is pushed to rotate more easily without great effort.

Further, an axial guide mechanism is formed between the fixing piece and the holding piece and used for guiding the holding piece to move along the axial direction.

An axial guide mechanism is further formed between the fixing piece and the retaining piece and used for guiding the retaining piece to move along the axial direction, so that the filter also moves along the axial direction of the fixing piece and the retaining piece, the situation that any one part shakes along the direction perpendicular to the axial direction is avoided, the stability of the axial movement of the retaining piece and the filter is improved, and the pipe fitting of the filter is enabled to be smoothly connected with the joint of the fixing piece in a sealing mode.

Further, the axial guide mechanism comprises a guide block and a guide groove extending along the axial direction, the guide block is positioned on one of the fixed piece and the retaining piece, the guide groove is positioned on the other of the fixed piece and the retaining piece, the guide block is inserted into the guide groove, and when the guide block and the guide groove generate relative movement in the axial direction, the retaining piece moves upwards or downwards in the axial direction.

The axial guide mechanism comprises a guide block and a guide groove extending along the axial direction, the guide block is inserted into the guide groove, the guide block and the guide groove generate relative movement in the axial direction, and the retaining piece moves upwards or downwards in the axial direction.

Furthermore, the number of the guide blocks and the number of the guide grooves are both 2, and the guide blocks and the guide grooves are oppositely arranged on two sides of the fixing piece and the retaining piece.

The number of the guide blocks and the guide grooves is 2, and the guide blocks and the guide grooves are oppositely arranged on two sides of the fixing piece and the retaining piece, namely, the two opposite sides of the fixing piece and the retaining piece are respectively provided with an axial guide mechanism, so that the stability of the axial movement of the retaining piece and the filter is further improved.

Further, the top end or the bottom end of the guide groove is provided with a first locking groove section communicated with the guide groove, and the first locking groove section is positioned on the same direction side of the guide groove and extends along the direction vertical to the axial direction.

The top or the bottom of guide way form rather than the first locking groove section that communicates, it is located the same direction side of guide way, and extend along the direction perpendicular with the axial, guide block and guide way produce relative motion in the axial, 2 guide block slide in first locking groove section back along same direction, the tank bottom of 2 first locking groove sections plays supporting role or 2 guide block's top is played supporting role to 2 first locking groove section's the groove top of 2 first locking groove sections of face to 2 guide block, thereby the axial motion is no longer taken place to the mounting to the keeper, in order to play the positioning action to the filter, guarantee during filtering, the pipe fitting of filter and the joint of mounting form sealing connection all the time, and can not separate.

Further, a second locking groove section is formed at the top end or the bottom end of the driving chute and communicated with the driving chute, and the second locking groove section extends along the direction perpendicular to the axial direction; or the fixing piece is also provided with a limiting groove extending along the axial direction, the driving block is inserted into the driving inclined groove and the limiting groove at the same time, and the limiting groove is used for limiting the movement of the driving block in the axial direction.

The top or the bottom of drive chute form rather than the second locking groove section that communicates, it extends along the direction with axial vertical, drive block and drive chute produce relative motion on axial direction, the second locking groove section of drive chute top or bottom is slided into to the drive block, the tank bottom of second locking groove section plays supporting role to the drive block or the top of drive block plays supporting role to the groove top of second locking groove section, the axial relative motion no longer takes place for the two, thereby play the positioning action to the filter.

The mounting still has the spacing groove that extends along axial direction, and the drive block is inserted in drive chute and spacing inslot simultaneously, and the spacing groove is used for restricting the motion of drive block at axial direction, further improves the axial motion's of keeper and filter stability, avoids the motion in-process to take place to rock.

Further, the rotary driving member comprises a main body and a flange positioned on the periphery of the top end of the main body, and the fixing member further comprises a support part, wherein the support part is provided with a support ring, and the support ring is sleeved on the periphery of the rotary driving member and supports the flange from the lower part so as to rotatably support the rotary driving member; alternatively, the holder has a U-shape, one of the inner side thereof and the outer periphery of the upper end of the strainer has a lug, and the other has a catching groove perpendicular to the axial direction, and the lug is detachably inserted into the catching groove to hold the strainer.

The supporting ring is sleeved on the periphery of the rotary driving piece and supports the flange at the top end of the rotary driving piece from the lower part so as to rotatably support the rotary driving piece.

The filter holder is U-shaped, the filter and the holder are detachably fixed through a clamping groove and a lug between the filter and the holder, the structure is simple, the connecting device and the filter are easy to process and manufacture, and the filter is convenient to replace and operate.

Furthermore, the invention also provides a filtering system comprising the connecting device of the filter, wherein the filtering system further comprises the filter which can be detachably connected with the connecting device in a sealing mode, the filter is provided with at least two pipe fittings, and the positions of the at least two pipe fittings correspond to the positions of the at least two joints so as to form detachable connection in a sealing mode.

The invention provides a filter system comprising a novel connecting device, and a filter, wherein the filter is detachably connected with the connecting device in a sealing way, and the filter is convenient to detach and install.

Further, in the operation method of the filtering system, the filter mounting step includes:

(1) rotating the rotary drive member, the retainer moving axially downward relative to the rotary drive member;

(2) mounting the filter inside a holder;

(3) rotating the rotary drive part in the opposite direction, the holding part drives the filter together axially upwards relative to the rotary drive part until the at least two pipe pieces of the filter form a sealing connection with the at least two joints of the connecting device.

In the filtering system, the installation steps of the filter are simple, the operation is convenient, and the installation of the filter can be easily realized only by 3 steps.

Further, in the operation method of the filtering system, the disassembling step of the filter includes:

(1) rotating the rotary driving piece, wherein the holding piece drives the filter to axially move downwards relative to the rotary driving piece, and at least two pipe fittings of the filter are disconnected with at least two joints of the connecting device;

(2) removing the filter from the holder.

In the filtering system, the filter is convenient to disassemble, and the operation is labor-saving and time-saving.

The invention provides a connecting device of a filter, which comprises a fixing piece, a retaining piece and a rotary driving piece, wherein the fixing piece is used for fixing the connecting device in an external pipeline or equipment, the retaining piece is used for retaining the filter, a motion conversion mechanism is formed between the rotary driving piece and the retaining piece, the motion conversion mechanism converts the rotary motion of the rotary driving piece into the axial motion of the retaining piece, and drives the filter to move axially upwards or downwards so that at least two pipe fittings of the filter and at least two joints of the fixing piece are in detachable sealing connection or disconnection. The connecting device has the advantages of simple structure, few components, easier processing and manufacture, lower cost and small overall occupied space, and the connecting device and the filter form a filtering system in which the filter is easy to replace.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is an isometric view of a connector device provided in prior art JP4234938B 2;

FIG. 2 is an isometric view of the lever of FIG. 1;

FIG. 3 is an exploded view of the locking device on the lever of FIG. 1;

FIG. 4 is a half-sectional isometric view of the connecting rod of FIG. 1;

FIG. 5 is an isometric view of a connection device provided in accordance with an embodiment of the present invention (the retainer is not shown);

FIG. 6 is an isometric view of the fastener of FIG. 5;

FIGS. 7A and 7B are top and isometric views of the holder of FIG. 5;

figures 8A and 8B are isometric and front views of the rotary drive of figure 5;

FIGS. 8C and 8D are isometric and front views of another configuration of the rotary drive member;

FIG. 9 is an isometric view of the support member of FIG. 5;

FIG. 10 is an isometric view of a filter that may be used with the connection device provided in FIG. 5;

FIG. 11 is a schematic illustration of an installation process of the fixture provided in FIG. 6 and the retainer provided in FIGS. 7A and 7B;

FIG. 12 is a schematic view of the assembly of the rotary drive member provided in FIGS. 8A and 8B under the retaining member and the fixing member of FIG. 11;

FIG. 13 is a schematic view illustrating a process of sleeving the supporting member provided in FIG. 9 on the outer circumference of the rotary driving member in FIG. 12;

FIG. 14 is a schematic view of the process of mounting the connector and connector mounting plate over the fixture of FIG. 13;

FIG. 15 is a schematic view of the process of installing the filter provided in FIG. 10 in the connection device of FIG. 14;

fig. 16 is a schematic view of the process of removing the filter from the connection device of fig. 14.

In the figure, 100-connector means, 1-connecting rod, 11-outer rod, 11A-groove, 12-sliding rod, 13-spring, 2-locking means, 21-first catch, 21A-spring groove, 22-second catch, 23-spring, 24-screw, 3-operating rod, 200-connecting means, 4-fixing means, 40-fixing plate, 40A-fixing hole, 40B-mounting hole, 40C-joint, 40D-joint mounting plate, 41-guide rod, 410-guide groove, 42-stopper rod, 420-stopper groove, 43-first locking groove section, 44-support means, 44A-support ring, 44B-bracket, 5-retaining means, 50-drive block, 51-guide block, 52-lug, 6-rotary drive, 60-drive chute, 61-body, 62-flange, 63-second locking groove section, 5A-motion conversion mechanism, 5B-axial guide mechanism, 7-filter, 70-slot, 71-tube.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Fig. 5-9 illustrate a filter attachment 200 according to an embodiment of the present invention. The connecting device 200 comprises a fixing member 4, a holding member 5 and a rotary drive member 6. The fixing member 4 is used for fixing the connection device 200 in an external pipe or equipment, and has at least two joints 40C, one end of the at least two joints 40C is hermetically connected with the external pipe or equipment, and the other end is used for forming a detachable sealing connection with at least two pipe members 71 of the filter 7. The holder 5 is for holding the filter 7.

It should be noted that, in the present embodiment, the fixing member 4 has 3 connectors 40C, and accordingly, the top end of the filter 7 is provided with 3 pipe members 71, which are respectively used as a raw material liquid inlet, a clean filtrate outlet and an exhaust port of the filter 7. The 3 pipe fittings 71 are detachably and hermetically connected with one end of the 3 joints 40C of the fixing member 4, and the other end of the 3 joints 40C is directly and hermetically connected with an external pipeline or equipment, or can be hermetically connected with the external pipeline or equipment through an intermediate pipeline. Of course, if there is no exhaust requirement, the filter 7 may be provided with only 2 pipe members 71, and the fixing member 4 may be provided with only 2 joints 40C.

The coupling device 200 further comprises a motion conversion mechanism 5A which acts between the rotary drive member 6 and the holder 5. The motion conversion mechanism 5A converts the rotational motion of the rotary drive member 6 into the axial motion of the holder 5, and brings the filter 7 axially upward or downward, so that the 3 pipe members 71 of the filter 7 are detachably and sealingly connected to or disconnected from the 3 joints 40C of the fixing member 4.

In this embodiment, the direction of movement of the filter 7 is parallel to the axial direction of the connection device 200, which will be described later.

The specific structures of the fixing member 4, the holding member 5, the rotary driving member 6 and the motion converting mechanism 5A of the connecting device 200 and the operation of the motion converting mechanism 5A will be described in detail below.

As shown in fig. 6, the fixture 4 has a fixture plate 40, and the fixture plate 40 includes a rectangular parallelepiped portion extending substantially in the axial direction thereof and a disc portion extending perpendicular to the axial direction, which are integrally connected. The rectangular parallelepiped portion is provided with a plurality of fixing holes 40A, for example, 4 fixing holes 40A for fixing the fixing plate 40 in a pipeline or in an external device; the disk-shaped portion is provided with 3 mounting holes 40B, and the 3 mounting holes 40B are used for mounting 3 tabs 40C, respectively.

The outer edge of the lower surface of the fixing plate 40 is provided with two guide rods 41 connected with the fixing plate 40, the two guide rods 41 are relatively positioned at two sides of the fixing plate 40, namely the fixing part 40, each guide rod 41 is provided with a guide groove 410, and the extending direction of each guide rod 41 and the guide groove 410 is parallel to the moving direction of the filter 7. In the present embodiment, the guide groove 410 penetrates the entire thickness of the guide bar 41. Of course, in other embodiments, the guide slot 410 may not penetrate the entire thickness of the guide bar 41, but rather simply be a channel formed in the side wall of the guide bar 41, leaving a slot bottom.

Meanwhile, the top ends of the 2 guide grooves 410 are provided with first locking groove sections 43 communicated with the top ends, and the first locking groove sections 43 are positioned on the same direction side of the guide grooves 410 and extend along the direction perpendicular to the axial direction. For example, in the present embodiment, the two first locking groove segments 43 are each located on the clockwise direction side of the 2 guide grooves 410. Of course, in other embodiments, the two first locking groove segments 43 may be located on the counterclockwise direction side of the 2 guide grooves 410.

Furthermore, the outer edge of the lower surface of the fixing plate 40 is further provided with a limiting rod 42, and the connecting line between the position of the limiting rod 42 and the position of the two guide rods 41 is in a triangular distribution, preferably, the triangle is an isosceles triangle, that is, the distance between the limiting rod 42 and the two guide rods 41 is equal. The side wall of the limit rod 42 is formed with a limit groove 420 extending along the axial direction of the connecting device 200, and the limit groove 420 may or may not penetrate through the entire wall thickness of the side wall of the limit rod 42. Similarly to the guide groove 410, the top end, clockwise side of the stopper groove 420 is also provided with a first locking groove section 43 communicating therewith, which also extends in a direction perpendicular to the axial direction of the coupling device 200.

As shown in fig. 7A and 7B, the holder 5 is substantially U-shaped, one end of which is open, and a driving block 50 is provided on an outer wall of a closed end thereof, a guide block 51 is provided on an outer wall of each of both open ends thereof, a plurality of lugs 52 are provided on an inner wall thereof, and two guide blocks 51 are provided on both sides of the holder 5 in opposition.

As shown in fig. 8A and 8B, the rotary drive member 6 has a main body 61, a flange 62 is formed on the outer periphery of the top end of the main body 61, and a drive chute 60 is formed on the side wall.

Alternatively, as shown in fig. 8C and 8D, a second locking groove section 63 is further formed at the tip end of the drive chute 60 in the clockwise direction, and the extending direction of the second locking groove section 63 is also perpendicular to the axial direction.

The supporting member 44, which is provided in a separate body from the fixing plate 40, constitutes the fixing member 4 of the coupling device 200 together with the fixing plate 40, as shown in fig. 9. The support 44 includes a support ring 44A and a bracket 44B, and the bracket 44B is provided with an opening similar to the fixing hole 40A of the fixing plate 40 to fix the support 44.

As shown in fig. 10, the filter 7 has a locking groove 70 on the outer periphery of the upper end, the extending direction of the locking groove 70 is perpendicular to the axial direction of the connecting

device

200, and 3 pipe members 71 are located on the top end of the filter 7 and respectively used as a raw material liquid inlet, a clean filtrate outlet and an exhaust port.

In this embodiment, the driving block 50 on the holder 5 and the driving chute 60 on the rotary driving member 6 constitute the motion converting mechanism 5A of the connecting device 200, the driving block 50 is inserted into the driving chute 60, and when the rotary driving member 6 rotates, the driving block 50 and the driving chute 60 generate relative motion in the axial direction to drive the holder 5 to move axially upward or downward.

Wherein the fixing member 4 is fixed in an external device or pipeline, in order to reduce the space occupied by the connecting device 200 as a whole, the rotary drive member 6 is located closer to the filter 7 than the fixing member 4, i.e. the rotary drive member 6 is located closer to the filter 7. Specifically, in the present embodiment, the filter 7 is moved from bottom to top to achieve the sealing connection between the pipe 71 and the joint 40C of the fixing member 4, and therefore, the rotary driving member 6 is provided on the lower surface side of the fixing member 4.

Furthermore, the holder 5 is also movably provided inside the rotary drive member 6, which also makes it possible to reduce the space occupied by the connecting device 200 as a whole. Similarly, the holder 5 is located closer to the filter 7 than the fixing member 4 and on the lower surface side of the fixing member 4, the driving block 50 of the outer wall of the closed end is inserted into the driving chute 60 of the rotary driving member 6, the driving block 50 and the driving chute 60 are relatively movable in the axial direction, and when the driving block 50 is inserted into the second locking groove section 63 shown in fig. 8C and 8D, the rotary driving member 6 supports and fixes the holder 5, and the holder 5 is axially positioned relative to the rotary driving member 6. Of course, the retaining element 5 can also be positioned in another way with the rotary drive 6.

The support 44 is fixed below the fixing plate 40 through an opening on the bracket 44B, and the support ring 44A is fitted around the outer circumference of the rotary drive member 6 and supports the flange 62 from below to rotatably hold the rotary drive member 6.

In the connecting device 200, the fixing plate 40 and the support 44 of the fixing member 4 are fixed in an external device or a pipeline, so that the axial heights of the fixing plate and the support 44 are fixed, wherein the support ring 44A of the support 44 is sleeved on the outer periphery of the rotary driving member 6 and below the flange 62, so that the rotary driving member 6 is axially positioned relative to the fixing member 4, i.e. the axial height is fixed, but the rotary movement can be generated. The holder 5 is located inside the rotary drive element 6, and a positioning between them is possible, as well as a relative movement in the axial direction. When the driving block 50 is located in the second locking groove section 63, the rotary driving member 6 supports the holding member 5, and a positioning is formed therebetween; when the drive block 50 is located within the drive chute 60, relative movement between the two can occur in the axial direction. Due to the axial positioning of the rotary drive element 6 relative to the stationary element 4, i.e. the axial height of the rotary drive element 6 is fixed, when the holder 5 and the rotary drive element 6 are moved relative to each other in the axial direction, the holder 5 is moved axially upwards or downwards relative to the rotary drive element 6.

The plurality of lugs 52 on the inner side of the holder 5 are detachably inserted into the catching grooves 70 of the filter 7 to fix and support the filter 7, and when the holder 5 moves axially upward or axially downward relative to the rotary driving member 6, the holder brings the filter 7 to move axially upward or downward, so that the 3 pipe members 71 are sealingly connected to or disconnected from the 3 joints 40C. Alternatively, the catching groove 70 may be provided inside the holder 5, the plurality of lugs 52 may be provided on the outer periphery of the upper end of the strainer 7, and the plurality of lugs 52 may be detachably inserted into the catching groove 70 to fix the strainer 7 to the holder 5.

Of course, in other embodiments, the driving block 50 may be disposed on the rotary driving member 6, and the driving chute 60 may be disposed in the holding member 5, that is, the motion conversion mechanism 5A of the connecting device 200 is composed of the driving chute 60 on the holding member 5 and the driving block 50 on the rotary driving member 6, in which case, when the rotary driving member 6 rotates, the driving chute 60 on the holding member 5 generates an axial relative motion with respect to the driving block 50 on the rotary driving member 6, so that the holding member 5 generates an axial upward or axial downward motion with respect to the rotary driving member 6. Preferably, the driving block 50 is rotated to the inner wall of the driving member 6, and the driving chute 60 is provided on the side wall of the closed end of the holder 5, the holder 5 is located inside the rotating driving member 6, the driving block 50 on the inner wall of the rotating driving member 6 is inserted into the driving chute 60 of the closed end of the holder 5, and the top surface of the driving block 50 supports the top wall of the driving chute 60 to hold the holder 5.

Alternatively, in this case, in order to stably support the holder 5, a second locking groove section 63 is provided at the bottom end of the driving chute 60 on the holder 5, and when the holder 5 moves axially upward relative to the rotary driving member 6 to the highest position in the axial direction and the driving block 50 on the rotary driving member 6 enters the second locking groove section 63, the top surface of the driving block 50 supports the groove top wall of the second locking groove section 63, and the rotary driving member 6 stably fixes and supports the holder 5.

The object of the present invention can be achieved whether the motion conversion mechanism 5A of the connecting device 200 provided in this embodiment is constituted by the drive block 50 on the holder 5 and the drive diagonal 60 on the rotary drive member 6, or by the drive diagonal 60 on the holder 5 and the drive block 50 on the rotary drive member 6, and the rotary motion of the rotary drive member 6 is converted into the axial motion of the holder 5, so that the holder 5 is moved axially upward or downward.

Further, in this embodiment, the driving block 50 inserted into the driving chute 60 is further inserted into the limiting groove 420 of the fixing member 4, and the limiting groove 420 can limit the movement of the driving block 50 in the axial direction, so as to limit the movement of the retaining member 5 and the filter 7 in the axial direction, thereby avoiding the generation of shaking and improving the stability of the axial movement.

Incidentally, in other embodiments, when the motion converting mechanism 5A is constituted by the drive inclined groove 60 on the holder 5 and the drive block 50 on the rotary drive member 6, the fixing member 4 is not provided with the stopper rod 42 nor with the stopper groove 420.

Preferably, in this embodiment, the central rotation axis of the rotary driving member 6 is parallel to the movement direction of the filter 7, so that the filter 7 can be ensured to move along the direction parallel to the central rotation axis of the rotary driving member 6, and the movement stability is better.

Furthermore, the fixing member 4, the holding member 5 and the rotary driving member 6 are coaxially positioned, that is, the central axes of the three coincide, which can ensure that the holding member 5 drives the filter 7 to move upwards or downwards along the common central axis of the three, avoid the pipe 71 of the filter 7 and the joint 40C of the fixing member 4 from being misaligned, ensure that a reliable sealing connection can be formed between the pipe 71 and the joint 40C, and prevent the pipe 71 or the joint 40C from being worn.

Further, in some embodiments, the height of the driving chute 60 in the axial direction is also set to be not less than the installation stroke of the joint 40C of the fixing member 4 into the pipe 71 of the filter 7. The installation stroke refers to the height at which the pipe member 71 moves axially upward relative to the fixing member 4 from the time when the top end of the pipe member 71 is at the same axial height as the bottom end of the nipple 40C to the time when the sealed connection is formed between the pipe member 71 and the nipple 40C. The height of the driving chute 60 in the axial direction is not less than the mounting stroke, so that the pipe 71 of the filter 7 and the joint 40C of the fixing member 4 are ensured to be sealed after the driving block 50 and the driving chute 60 finish the relative axial movement.

In other embodiments, the angle between the wall of the driving chute 60 and the central axis of rotation of the rotary drive 6 is set to 30-60 °, i.e. the tangent to any point on the wall of the driving chute 60 is set to 30-60 ° to the central axis of rotation, as shown in fig. 8B. The included angle between the groove wall of the driving chute 60 and the central rotating shaft of the rotary driving member 6 is 30-60 degrees, which can realize the balance between the direction of the groove wall of the driving chute 60, the relative sliding distance between the driving block 50 and the driving chute 60 and the external driving force for driving the rotary driving member 6 to rotate. When the included angle is larger, the labor is saved, but the relative sliding distance between the two is longer, and when the included angle is smaller, the driving force is larger, and the operation is laborious, but when the relative sliding distance between the two is reduced, and the included angle is set to be 30-60 degrees, the relative sliding distance between the two is not too long, and the rotary driving piece 6 is pushed to rotate more easily without great effort.

In addition, in other more embodiments, an axial guide mechanism 5B is further formed between the fixing member 4 and the holder 5, and the axial guide mechanism 5B is used for guiding the holder 5 to move in the axial direction. The axial guide mechanism 5B is composed of a guide block 51 on the outer wall of the open end of the holder 5 and a guide groove 410 extending in the axial direction of the holder 4, the guide block 51 is inserted into the guide groove 410, and when the guide block 51 and the guide groove 410 are moved relatively in the axial direction, the holder 5 is moved upward or downward in the axial direction while the holder 4 is kept stationary. The fixing member 4 also supports the holder 5 when the guide block 51 of the holder 5 slides into the locking groove section 43 at the top end of the guide groove 410.

The axial guide mechanism 5B is used for guiding the holder 5 to move along the axial direction, so that the filter 7 also moves along the axial directions of the fixing piece 4 and the holder 5, the situation that any one part shakes along the direction perpendicular to the axial direction is avoided, the stability of the axial movement of the holder 5 and the filter 7 is improved, and the pipe piece 71 of the filter 7 is ensured to be smoothly in sealing connection with the joint 40C of the fixing piece 4.

In order to further improve the stability of the axial movement of the holder 5 and the filter 7, the two guide blocks 51 oppositely arranged on the outer walls of the two open ends of the holder 5 are respectively inserted into the two guide grooves 410 of the fixing member 4, i.e. the axial guide mechanism 5B comprises the two guide blocks 51 and the two guide grooves 410 and is oppositely arranged on two sides of the fixing member 4 and the holder 5, so that the axial movement of the holder 5 and the filter 7 can be guided and limited on two sides, and the shaking situation is avoided. The two locking groove sections 43 at the top ends of the two guide grooves 410 respectively support and fix the two guide blocks 51 sliding therein, so as to improve the fixing and supporting effect of the fixing member 4 on the retaining member 5.

In other embodiments, the guide groove 410 extending in the axial direction may be provided on the open end of the holder 5, and accordingly, the guide block 51 may be provided on the guide rod 41 of the fixing member 4 at a position corresponding to the guide groove 410 on the holder 5, that is, the axial guide mechanism 5B may be constituted by the guide groove 410 on the open end of the holder 5 and the guide block 51 on the fixing member 4. The guide block 51 is inserted into the guide groove 410, and when the guide groove 410 moves relatively to the guide block 51 in the axial direction, the fixing member 4 is kept stationary and the holding member 5 moves upward or downward in the axial direction.

Similarly, the number of guide grooves 410 extending in the axial direction at the open end of the holder 5 is 2, and the number of guide blocks 51 at the fixing member 4 corresponding to the guide grooves 410 is also 2. The 2 guide blocks 51 are located on the inner walls of the 2 guide rods 41, the holder 5 is positioned from the inner sides of the two guide rods 41 to the lower surface side of the fixing plate 40, and the 2 guide blocks 51 on the inner walls of the 2 guide rods 41 are inserted into one of the guide grooves 410, so that the axial guide function is formed on the opposite sides, and the stability of the holder 5 moving axially upward or downward is improved. In this case, the bottom ends of the 2 guide grooves 410 form first locking groove sections 43 communicating therewith, and the first locking groove sections 43 are located on the same direction side of the guide grooves 410 and extend in a direction perpendicular to the axial direction.

Fig. 11 to 14 show an assembly process of the connection device 200 provided in the present embodiment.

The first step is as follows: the fixing member 4 is fixed in an external device or a pipeline through 4 fixing holes 40A of a rectangular parallelepiped portion thereof; the retainer 5 is positioned close to the lower surface side of the fixing member 4 with its two guide blocks 51 aligned with the top ends of the two guide grooves 410 in the two guide rods 41, respectively, and the driving block 50 aligned with the top ends of the stopper grooves 420 in the stopper rod 42, and then, by rotating the retainer 5 in the clockwise direction, the two guide blocks 51 and the driving block 50 are slid into the respective first stopper groove sections 43 simultaneously, and the retainer 5 is positioned axially with respect to the fixing member 4.

The second step is that: the rotary drive member 6 moves upward from the lower surface sides of the guide rod 41, the stopper rod 42, and the holder 5, and wraps around the outer peripheries of the guide rod 41, the stopper rod 42, and the holder 5.

The third step: the support member 44 provided in fig. 9 is attached to the lower surface side of the fixing member 4, the support member 44 is fixed to the lower surface side of the fixing plate 40 through the opening of the bracket 44B thereof, and the support ring 44A is fitted around the outer periphery of the rotary drive member 6 and supports the flange 62 from below to rotatably hold the rotary drive member 6.

The fourth step: the 3 connectors 40C are correspondingly installed at the 3 installation holes 40B of the fixing plate 40, the installation plate 40D also has 3 openings matched with the 3 connectors 40C in position, and the 3 openings of the installation plate 40D penetrate through the 3 connectors 40C and are installed on the upper surface of the fixing plate 40, so as to further fix the 3 connectors 40C. Among them, the mounting plate 40D is not essential.

In addition, supplementary note, the fixing member 4 may also be provided without the guide rod 41 and the limiting rod 42, the second locking groove section 63 is provided at the top end of the driving chute 60, after the holding member 5 is placed inside the rotary driving member 6, the driving block 50 is inserted into the second locking groove section 63 at the top end of the driving chute 60, the rotary driving member 6 supports the holding member 5, so as to achieve the axial positioning of the holding member 5 relative to the rotary driving member 6, and the supporting member 44 is rotatably supported on the outer periphery of the rotary driving member 6 and below the flange 62.

Fig. 15 shows a process of mounting the filter 7 to the connecting device 200 provided in the present embodiment: rotating the rotary driving member 6 counterclockwise, after the driving block 50 and the 2 guide blocks 51 are slid out from the first locking groove section 43, the driving block 50 moves axially downward relative to the driving chute 60 and the limiting groove 420, the 2 guide blocks 51 move axially downward relative to the 2 guide grooves 410, and the retaining member 5 moves axially downward relative to the rotary driving member 6; then, the filter 7 is inserted inside the holder 5, and the plurality of lugs 52 of the holder 5 are inserted into the catching grooves 70 at the top end of the filter 7; and then the rotary driving member 6 is rotated clockwise, the driving block 50 moves axially upwards relative to the driving chute 60 and the limiting groove 420, the 2 guide blocks 51 move axially upwards relative to the 2 guide grooves 410, the retaining member 5 drives the filter 7 to move axially upwards together, until the driving block 50 slides into the first locking groove section 43 at the top end of the limiting groove 420, the 2 guide blocks 51 also slide into the first locking groove section 43 at the top end of the 2 guide grooves 410, and the 3 pipe fittings 71 and the 3 joints 40C of the fixing member 4 form sealing connection. In this embodiment, since the first locking groove section 43 at the top end of the limiting groove 420 can support and fix the driving block 50, the second locking groove section 63 may or may not be provided at the top end of the driving chute 60. When the fixing member 4 is not provided with the stopper rod 42, a second locking groove section 63 is provided at the top end of the driving chute 60 for fixing the driving block 50.

Fig. 16 shows a process of detaching the filter 7 from the connecting device 200 provided in the present embodiment: after the rotary driving member 6 is rotated counterclockwise, the driving block 50 and the 2 guide blocks 51 slide out of the first locking groove section 43, the driving block 50 moves axially downward relative to the driving chute 60 and the limiting groove 420, the 2 guide blocks 51 move axially downward relative to the 2 guide grooves 410, the holder 5 drives the filter 7 to move axially downward, the 3 pipe members 71 of the filter 7 are disconnected from the 3 joints 40C of the fixing member 4, the driving block 50 continues to move axially downward relative to the driving chute 60 and the limiting groove 420, and the 2 guide blocks 51 continue to move axially downward relative to the 2 guide grooves 410, each reaches the lowest point of the axial height, and then the filter 7 is taken down from the holder 5.

In addition, the connecting device 200 and the filter 7 provided by the embodiment of the invention form a filtering system together, and the 3 pipe fittings 71 at the top end of the filter 7 correspond to the 3 joints 40C of the connecting device 200 in position, and a detachable sealing connection is formed between the two. In which the connection device 200 is reusable and the filter 7 is generally disposable, when the filter cartridge inside has reached its maximum service life, the old filter 7 is removed and replaced with a new filter 7 in the manner described above.

While the preferred embodiments of the present invention have been illustrated and described in detail, it should be understood that various changes and modifications of the invention can be effected therein by those skilled in the art after reading the above teachings of the invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims

1. A connecting device of a filter comprises a fixing piece, a retaining piece and a rotary driving piece;

the holder is used for holding a filter, and is characterized in that:

the rotary drive member is closer to the filter than the fixed member;

2. A filter connection device according to claim 1, characterised in that the holder is movably arranged inside the rotary drive member.

3. A filter attachment as claimed in claim 1 or claim 2 in which the fixing, retaining and rotary drive members are co-axially located.

4. The filter connecting device of claim 3, wherein the motion conversion mechanism includes a drive block and a drive chute, the drive block is located in one of the holder and the rotary drive member, the drive chute is located in the other of the holder and the rotary drive member, the drive block is inserted in the drive chute, and the drive block and the drive chute produce relative motion in the axial direction to move the holder axially upward or downward when the rotary drive member rotates.

5. The filter connecting device according to claim 4, wherein the height of the driving chute in the axial direction is not less than the installation stroke of the connector of the fixing member inserted into the pipe member of the filter, and the angle between the groove wall of the driving chute and the central rotation shaft of the rotary driving member is 30-60 °.

6. The filter connecting device according to claim 3, wherein an axial guide means for guiding the holder to move in an axial direction is further formed between the fixing member and the holder.

7. The filter connecting device according to claim 6, wherein the axial guide mechanism comprises a guide block and a guide groove extending in the axial direction, the guide block is located in one of the fixing member and the holding member, the guide groove is located in the other of the fixing member and the holding member, the guide block is inserted into the guide groove, and the holding member moves axially upward or downward when the guide block and the guide groove produce relative movement in the axial direction.

8. The filter connecting device as claimed in claim 7, wherein the number of the guide blocks and the guide grooves is 2, and are oppositely disposed at both sides of the fixing member and the holding member.

9. The filter connecting device according to claim 8, wherein the top end or the bottom end of the guide groove is formed with a first locking groove section communicating therewith, the first locking groove section being located on the same directional side of the guide groove and extending in a direction perpendicular to the axial direction.

10. The filter connecting device according to claim 4, wherein the top end or the bottom end of the driving chute is formed with a second locking groove section communicating therewith, the second locking groove section extending in a direction perpendicular to the axial direction; or the fixing piece is also provided with a limiting groove extending along the axial direction, the driving block is inserted into the driving inclined groove and the limiting groove at the same time, and the limiting groove is used for limiting the movement of the driving block in the axial direction.

11. The filter connecting device according to claim 1, wherein the rotary drive member includes a body and a flange formed at an outer periphery of a top end of the body, and the holder further includes a support member having a support ring which is fitted over an outer periphery of the rotary drive member and supports the flange from below to rotatably hold the rotary drive member; alternatively, the holder has a U-shape, one of the inner side thereof and the outer periphery of the upper end of the strainer has a lug, and the other has a catching groove perpendicular to the axial direction, and the lug is detachably inserted into the catching groove to hold the strainer.

12. A filter system comprising a connection device for a filter according to any of the preceding claims, wherein the filter system further comprises a filter which is adapted to form a releasable sealing connection with the connection device, the filter having at least two tubular members which are positioned to correspond to the position of at least two joints to form a releasable sealing connection.

13. A method of operating in a filtration system as recited in claim 12, wherein said filter mounting step comprises:

(2) mounting the filter inside a holder;

14. A method of operating in a filtration system as recited in claim 12, wherein said step of disassembling said filter comprises:

(2) removing the filter from the holder.