CN111637302A

CN111637302A - Manual drive formula pipeline switching mechanism

Info

Publication number: CN111637302A
Application number: CN202010446048.0A
Authority: CN
Inventors: 蔡永潮
Original assignee: Zhejiang Houdar Intelligent Technology Co Ltd
Current assignee: Zhejiang Houdar Intelligent Technology Co Ltd
Priority date: 2018-12-05
Filing date: 2018-12-05
Publication date: 2020-09-08
Also published as: CN109519632B; CN109519632A

Abstract

The invention relates to a manual driving type pipeline switching mechanism which comprises a valve opening structure, an inner column and an outer ring, wherein the outer ring is sleeved outside the inner column in a rotating mode, a driving handle is arranged on the outer ring, an avoiding pit is formed in the inner circumferential surface of the outer ring, a central hole and a plurality of peripheral holes surrounding the central hole are formed in the end surface of the inner column, each peripheral hole is communicated with the central hole through a communicating hole, the communicating holes are provided with extension sections of linear structures penetrating through the circumferential surface of the inner column, and plugs are arranged in the communicating holes in a sealing and; all the plugs can only have the outer end of one plug positioned in the avoidance pit at the same time; when the outer end of the plug is positioned in the avoiding pit, the plug loses the sealing effect on the communicating hole under the action of the valve opening structure; when the outer end of the plug is staggered with the avoidance pit, the plug is sealed and sealed in the communicating hole under the extrusion action of the outer ring. The invention is used for realizing the communication control of a plurality of pipelines and the same pipeline.

Description

Manual drive formula pipeline switching mechanism

The scheme is a divisional application with the name of a manual driving type pipeline switching mechanism, which is application number 2018114814465,

application date

2018, 12 and 5.

Technical Field

The invention relates to a mechanical structure on traditional Chinese medicine production equipment, in particular to a manual drive type pipeline switching mechanism.

Background

In the automatic production equipment of traditional Chinese medicine, a plurality of different liquids need to be input into the same infusion main pipe through different pipelines and then are delivered to the destination. Only one of the pipelines can be communicated with the main infusion pipe at the same time. The existing realization of the above connection is realized by a solenoid valve. In addition, the existing mode of sealing and detachably connecting the two pipe bodies is that a thread head is arranged at the end parts of the two pipe bodies, then the thread connection is realized on the two ends of the internal thread pipe head in a way that the thread head is wound with the raw rubber belt, and the sealing is realized through the deformation of the raw rubber belt. In the connection mode, when the length of the thread head and the length of the internal thread pipe head are changed, the threads at the connection part are exposed, the thread exposure is poor in attractiveness, dust is easy to accumulate due to poor smoothness, the cleaning is not easy, and the sealing is inconvenient when the sealing is carried out through a raw rubber belt; if the two pipelines are welded together for sealing connection without arranging thread heads on the two pipelines, the threads can be prevented from being exposed, but the welding is inconvenient when the disassembly is carried out.

Disclosure of Invention

The first purpose of the invention is to provide a manually-driven pipeline switching mechanism, which is used for realizing the communication control of a plurality of pipelines and the same pipeline.

The second purpose of the present invention is to provide a manually driven pipeline switching mechanism with a connection joint capable of both avoiding the exposure of the screw thread at the connection position and realizing detachable connection, which is used to solve the problem that the existing connection joint cannot both allow detachable connection and avoid the exposure of the screw thread when connecting two pipelines.

The technical problem is solved by the following technical scheme: a manual driving type pipeline switching mechanism is characterized by comprising a valve opening structure, an inner column and an outer ring sleeved outside the inner column in a rotating mode, wherein a driving handle for driving the outer ring to rotate is arranged on the outer ring, an avoiding pit is formed in the inner circumferential surface of the outer ring, a central hole and a plurality of peripheral holes surrounding the central hole are formed in the end surface of the inner column, each peripheral hole is communicated with the central hole through a communicating hole, the communicating holes are provided with extension sections of linear structures penetrating through the circumferential surface of the inner column, and plugs are arranged in the communicating holes in a sealing and penetrating mode; all the plugs can only have the outer end of one plug positioned in the avoidance pit at the same time; when the outer end of the plug is positioned in the avoiding pit, the plug loses the sealing effect on the communicating hole under the action of the valve opening structure; when the outer end of the plug is staggered with the avoiding pit, the plug is sealed and sealed in the communicating hole under the extrusion action of the outer ring. During the use, link together main pipeline and centre bore, other branch pipes that need selectivity and main pipeline intercommunication are in the same place with the sealed butt joint of peripheral hole one-to-one, rotate on the inner prop through holding the actuating handle drive outer lane and change the position of dodging the breach, control the intercommunication of branch pipe and main pipeline, specifically be the same main pipe intercommunication of needs a branch pipe, make the outer end of dodging the end cap that the breach corresponds hold and make this end cap have the space of stretching out, the end cap stretches out and realizes the intercommunication of the downthehole centre bore of this periphery under the drive of open valve structure.

Preferably, the valve opening structure is a top block fixedly connected in the outer ring, a clamping channel is formed between the top block and the avoidance pit, guide-in inclined planes are arranged at two ends of the top block along the circumferential direction of the outer ring, the guide-in inclined planes and the inner circumferential surface of the outer ring form a guide-in channel, and a driving block matched with the top block is arranged at the outer end of the plug. The driving mode is rigid driving, and compared with the elastic opening of the spring, the problem of fatigue failure is avoided.

Preferably, the driving block is of a roller structure, and the driving block is in contact with the top block through the peripheral surface. Wear can be reduced.

Preferably, the communication hole has a straight line structure, and the communication hole and the extension are located on the same straight line. The preparation is convenient.

As preferred, the centre bore is connected with connection joint, connection joint includes the connector tube head, be equipped with the internal thread pipeline section in the outer end of centre bore and be located the inner location step of internal thread pipeline section, the one end of connector tube head is equipped with the external screw thread pipeline section, threaded connection has the interior external screw thread pipeline section of cover on the external screw thread pipeline section on, interior external screw thread pipeline section threaded connection in the internal thread pipeline section and with connector tube head and centre bore link together, the internal thread pipeline section with the external screw thread pipeline section is in the same place through sealed assembly sealing connection, external screw thread pipeline section and interior external screw thread pipeline section complete holding are in the internal thread pipeline section, the one end of keeping away from the connector tube head of external screw thread pipeline section links together through automatic mechanism of installing and removing between the. The method for connecting the main pipe comprises the step of welding the main pipe on the other end of the connecting pipe head. This technical scheme can change the distance between the free end of internal and external screw thread section and the connector head end plate through the overlapping feeding between internal and external screw thread pipe and the external screw thread section for the external screw thread section all is located the mouth and avoids the screw thread to expose in the entering. The central holes of the internal thread pipe sections with different lengths can be matched with the same connecting pipe head, and the universality is good. The second object of the invention is achieved.

Preferably, the outer end of internal thread pipeline section is equipped with the major diameter section and forms first sealed step, form the sealed step of second between external thread pipeline section and the connector head, seal assembly is including setting up along the annular of connector head circumference extension on the sealed step of second, be located the annular sealed gasbag of annular and set up the sealing ring of the circumference extension of internal thread pipeline section on the first sealed step, the sealing ring can wear to establish extrude in the annular sealed gasbag and make the annular sealed gasbag warp and seal step and second with first sealed step and second and be in the same place, the connector head can insert in the major diameter section. The sealing assembly has good sealing effect, and can simultaneously realize sealing between the external thread pipe end and the internal thread pipe section and between the internal thread pipe section and the external thread pipe section. The problem of current inconvenient when sealing through the raw sticky tape is solved.

Preferably, the sealing ring is provided with a plurality of annular sealing teeth which are sequentially sleeved together, and the annular sealing teeth extend along the circumferential direction of the internal thread pipe section. The sealing effect can be further improved.

Preferably, the automatic assembling and disassembling mechanism comprises an axial insertion hole formed in an inner end face of the inner and outer thread pipe section, a first lock pin penetrating through the axial insertion hole and a first lock pin extension spring driving the first lock pin to extend out of the inner end face of the axial insertion hole, the axial insertion hole is provided with a radial insertion hole penetrating through an inner circumferential surface of the inner and outer thread pipe section, an annular locking groove formed in an outer circumferential surface of the outer thread section and capable of aligning with the radial insertion hole and extending along the circumferential direction of the outer thread section, a second lock pin penetrating through the radial insertion hole and a second lock pin extension spring driving the second lock pin to insert into the annular locking groove, the second lock pin is provided with an unlocking hole aligned with the first lock pin, and an insertion guide head is arranged at an inner end of the. This structure can be including the external screw thread pipeline section screw to the inner of internal screw thread pipeline section promptly when the bottom automatically disengage and make the external screw thread pipeline section can rotate, and the external screw thread pipeline section can not rotate for the internal and external screw thread pipeline section before not tripping to the internal and external screw thread pipeline section can not rotate for the internal screw thread pipeline section when avoiding need screwing in. After the pipe is taken out, when the first lock pin is aligned with the annular locking groove, the automatic assembling and disassembling mechanism can be automatically connected to lock the internal and external thread pipe sections together.

Preferably, the outer end of the plug is provided with a positioning hole, the avoiding pit is provided with a bolt mounting through hole which is aligned with the positioning hole when the outer end of the plug is positioned in the avoiding pit and radially penetrates through the outer ring along the outer ring, the bolt mounting through hole is internally provided with a positioning pin and a positioning pin driving spring for driving the positioning pin to be inserted into the positioning hole, and one end of the positioning pin is inserted into the positioning hole while the other end of the positioning pin extends out of the outer ring. When the plug needing to be opened is aligned with the avoiding pit and opened, the positioning bolt is inserted into the positioning hole, so that the phenomenon that the peripheral hole needing to be communicated with the central hole is closed and arranged to be not communicated with the central hole due to the fact that the outer ring is displaced due to reasons such as interference accidents and the like is avoided, and the reliability is good. When the outer lane needs to be rotated, then grasp the part that the location bolt exposes outside the outer lane and extract the location bolt from the locating hole, then rotate the outer lane, rotate to near the outer lane and loosen the effect of drawing outward to the location bolt when dodging the end cap annex that pit aligns near needs, when dodging the pit and continuing to rotate bolt installation through-hole and align with the locating hole, then the location bolt is in the locating hole that needs got into the end cap of dodging the pit under locating pin drive spring's effect automatic insertion, make the outer lane can not continue to rotate, the end cap that needs to open this moment is also opened.

The invention has the following advantages: the rotary communication of one pipeline and a plurality of pipelines can be realized; can be used for carrying out sealing connection and connecting out to two pipelines and can avoid the screw thread to expose.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a first embodiment of the invention.

Fig. 3 is a schematic sectional view a-a of fig. 2.

Fig. 4 is a schematic sectional view B-B of fig. 2.

Fig. 5 is a schematic cross-sectional view of the second embodiment.

Fig. 6 is a partially enlarged schematic view of fig. 5 at D.

Fig. 7 is a schematic view of the connection joint according to the third embodiment when it is not sealingly connected.

Fig. 8 is a partially enlarged schematic view of a portion a of fig. 7.

Fig. 9 is a partially enlarged schematic view of fig. 7 at B.

FIG. 10 is a schematic view of the connection fitting when sealingly connected.

Fig. 11 is a partially enlarged schematic view at C of fig. 10.

In the figure: an inner column 1, a central hole 11, a peripheral hole 12, a communication hole 13, an extension section 14, an outer ring 2, an avoiding pit 21, an end plate 22, a driving handle 23, a positioning pin 3, a positioning hole 31, a bolt mounting through hole 32, a positioning pin driving spring 33, a plug 4, a sealing ring 41, a driving block 42, a valve opening structure 5, a top block 51, a clamping channel 52, a leading-in inclined plane 53, a leading-in channel 54, a header pipe 6, a connecting joint 9, an internal thread pipe section 91, a positioning step 92, a first sealing step 93, an external thread pipe section 94, a second sealing step 95, an internal and external thread pipe section 96, a sealing assembly 97, an annular groove 971, an annular sealing air bag 972, a sealing ring 973, an annular sealing tooth 974, an automatic assembling and disassembling mechanism 98, an axial insertion hole 981, a first locking pin 982, a first locking pin extension spring 983, a radial insertion hole 984, an annular locking groove 985, a second locking, An insertion guide head 989 and a connector head 99.

Detailed Description

The invention is further described with reference to the following figures and examples.

In a first embodiment, referring to fig. 1, fig. 2, fig. 3 and fig. 4, a manually driven pipeline switching mechanism includes a valve opening structure 5, an inner column 1 and an outer ring 2 rotatably sleeved outside the inner column. An avoiding pit 21 is provided on the inner peripheral surface of the outer ring 2. The escape recess 21 is a V-shaped recess. The outer ring is provided with a driving handle 23 for driving the outer ring to rotate. One end of the outer ring is provided with an end plate 22 to form a barrel body with one closed end. The built-in is positioned in the barrel body. The end face of the inner column 1 is provided with a central hole 11 and a plurality of peripheral holes 12 surrounding the central hole. Each of the peripheral holes communicates with the central hole through a communication hole 13. The communicating hole is of a linear structure. The communication hole is provided with an extension section 14 penetrating the circumferential surface of the inner column. The extension section is of a linear structure. The communicating hole and the extending section are located on the same straight line. The hole diameters of the communicating hole and the extending section are the same. The plug 4 is arranged in the communication hole in a sealing and movable mode in a penetrating mode. Two sealing rings 41 are arranged on the plug 4. The plug is sealed with the extension section or the straight section through the sealing ring. The outer end of the plug is provided with two driving blocks 42 which are distributed along the axial direction of the outer ring. The driving block is of a roller structure. The outer ring is contacted with the inner circumferential surface of the outer ring through the driving block. All the plugs can only have the outer end of one plug positioned in the avoidance pit at the same time, and particularly the driving block is positioned in the avoidance pit. The valve opening structure 5 is a top block 51 fixed in the outer ring. The top block and the relief pit form a clamping channel 52 therebetween. The two ends of the top block along the circumferential direction of the outer ring are provided with a leading-in inclined plane 53. A lead-in passage 54 is formed between the lead-in slope and the inner peripheral surface of the outer race. The driving block is contacted with the top block through the circumferential surface.

When in use, the plurality of branch pipes are hermetically connected with the peripheral holes in a one-to-one correspondence manner, and the main pipe is connected in the central hole; when a certain peripheral hole is required to be communicated with the central hole, the outer ring is driven to rotate to avoid the concave pit to align with the outer end of the plug of the central hole for sealing the peripheral hole by holding the driving handle, at the moment, the plug moves towards the direction far away from the central hole under the action of the valve opening structure, so that the two sealing rings are positioned in the extension section, and at the moment, the peripheral hole is communicated with the central hole. And under the extrusion action of the outer ring, one of the two sealing rings on the plugs is positioned in the extension section for sealing, and the other sealing ring is positioned in the communicating hole for sealing, so that the central hole is disconnected from the peripheral hole.

The second embodiment is different from the first embodiment in that:

referring to fig. 5 and 6, the outer end of the plug is provided with a positioning hole 31. And the avoiding pit is provided with a bolt mounting through hole 32 which is aligned with the positioning hole when the outer end of the plug is positioned in the avoiding pit and radially penetrates through the outer ring along the outer ring. The pin mounting through hole is internally provided with a positioning pin 3 and a positioning pin driving spring 33 for driving the positioning pin to be inserted into the positioning hole. And one end of the positioning pin is inserted into the positioning hole, and the other end of the positioning pin extends out of the outer ring.

When the outer lane needs to be rotated, then grasp the part that the location bolt exposes outside the outer lane and extract the location bolt from the locating hole, then rotate the outer lane, rotate to near the outer lane and loosen the effect of drawing outward to the location bolt when dodging the end cap annex that pit aligns near needs, when dodging the pit and continuing to rotate bolt installation through-hole and align with the locating hole, then the location bolt is in the locating hole that needs got into the end cap of dodging the pit under locating pin drive spring's effect automatic insertion, make the outer lane can not continue to rotate, the end cap that needs to open this moment is also opened.

The third embodiment is different from the second embodiment in that:

referring to fig. 7, 8, 9, 10 and 11, the central hole 11 is further provided with a connection joint 9. The coupling joint comprises a coupling nipple 99, an internally threaded pipe section 91 arranged in the outer end of the central bore and a positioning step 92 at the inner end of the internally threaded pipe section. The outer end of the internally threaded tubular section is provided with a large diameter section to form a first sealing step 93. The connector stub 99 is provided with an externally threaded pipe section 94 at one end. A second sealing step 95 is formed between the externally threaded pipe section and the connector stub. The connector stub 99 can be inserted into the large diameter section. The external thread pipe section is in threaded connection with an internal and external thread pipe section 96 which is sleeved on the external thread pipe section. The connector head and the inlet of the central bore are sealingly connected together by a seal assembly 97. The sealing assembly comprises an annular groove 971 arranged on the second sealing step and extending circumferentially along the connector head, an annular sealing balloon 972 located within the annular groove, and a sealing ring 973 arranged on the first sealing step and extending circumferentially along the internally threaded pipe section. The sealing ring can penetrate through the annular groove to seal the annular sealing air bag, so that the annular sealing air bag deforms to connect the connecting pipe head and the inlet of the central hole together in a sealing mode. The sealing ring is provided with a plurality of (specifically 2) annular sealing teeth 974 which are sequentially sleeved together. The annular sealing tooth extends in the circumferential direction of the internally threaded pipe section. The end of the externally threaded pipe section remote from the connector head is connected to the end of the internally and externally threaded pipe section adjacent to the connector head by an automatic assembly and disassembly mechanism 98. The automatic assembly and disassembly mechanism comprises an axial insertion hole 981 arranged on the inner end face of the inner and outer thread pipe sections, a first lock pin 982 arranged in the axial insertion hole in a penetrating mode, and a first lock pin extending spring 983 driving the first lock pin to extend out of the inner end face of the axial insertion hole. The axial jack is provided with a radial jack 984 penetrating through the inner peripheral surface of the inner and outer thread pipe sections, an annular locking groove 985 which is arranged on the outer peripheral surface of the screw head and can be aligned with the axial jack and extend along the circumferential direction of the screw head, a second lock pin 986 penetrating in the radial jack and a second lock pin extension spring 987 driving the second lock pin to be inserted into the annular locking groove. The second lock pin is provided with an unlocking hole 988 aligned with the first lock pin. The inner end of the first lock pin is provided with an insertion guide head 989.

In the initial state, the internal and external threaded pipe sections are connected together with the external threaded pipe section under the action of the automatic assembling and disassembling mechanism 98 and cannot rotate continuously.

The process of sealingly attaching connector stub 99 to central bore 11 in this embodiment is: the connector head is rotated to enable the internal and external threaded pipe sections to be screwed into the internal threaded pipe sections, when the internal and external threaded sections are screwed to the same positioning step 92 and abutted together, the first lock pin 982 is extruded to enable the first lock pin to be retracted, the first lock pin is inserted into the unlocking hole 988 to drive the second lock pin to be retracted to separate from the annular locking groove 985, and after the first lock pin is retracted, the external threaded pipe sections can rotate relative to the internal and external threaded pipe sections. During this process, the first pin extension spring 983 and the second pin extension spring 987 are energized. Further rotation of connector head 99 until the male threaded pipe section is fully inserted into the female threaded pipe section causes seal assembly 97 to sealingly connect connector head 99 and the central bore. The specific sealing process of the sealing assembly is as follows: the sealing ring 973 is inserted into the groove 971 to seal the annular sealing bladder 972, such that the annular sealing bladder deforms to seal. The annular sealing air bag and the annular groove are sealed by being bonded together through glue. Make the contact surface between sealing ring and the sealing washer be the curved surface of turn back structure under the effect of annular seal tooth 974 to play the effect that improves sealed effect.

When in use, the main pipe 6 is hermetically welded at the other end of the connecting pipe head to realize the connection with the central hole.

Claims

1. A manual driving type pipeline switching mechanism is characterized by comprising a valve opening structure, an inner column and an outer ring sleeved outside the inner column in a rotating mode, wherein a driving handle for driving the outer ring to rotate is arranged on the outer ring, an avoiding pit is formed in the inner circumferential surface of the outer ring, a central hole and a plurality of peripheral holes surrounding the central hole are formed in the end surface of the inner column, each peripheral hole is communicated with the central hole through a communicating hole, the communicating holes are provided with extension sections of linear structures penetrating through the circumferential surface of the inner column, and plugs are arranged in the communicating holes in a sealing and penetrating mode; all the plugs can only have the outer end of one plug positioned in the avoidance pit at the same time; when the outer end of the plug is positioned in the avoiding pit, the plug loses the sealing effect on the communicating hole under the action of the valve opening structure; when the outer end of the plug is staggered with the avoidance pit, the plug is sealed and sealed in the communicating hole under the extrusion action of the outer ring; the centre bore is equipped with connection joint, connection joint includes the connector tube head, be equipped with the internal thread pipeline section in the outer end of centre bore and be located the inner location step of internal thread pipeline section, the one end of connector tube head is equipped with the external screw thread pipeline section, threaded connection has the interior external screw thread pipeline section of cover on the external screw thread pipeline section, interior external screw thread pipeline section threaded connection will be connected the tube head and central hole in the internal thread pipeline section and link together, the internal thread pipeline section with the external screw thread pipeline section is through sealed assembly sealing connection together, external screw thread pipeline section and interior external screw thread pipeline section complete holding are in the internal thread pipeline section, the one end of keeping away from the connector tube head of external screw thread pipeline section links together through the automatic mechanism.

2. The manually-driven pipeline switching mechanism according to claim 1, wherein the valve opening structure is a top block fixedly connected in the outer ring, a clamping channel is formed between the top block and the avoiding pit, the top block is provided with a guide inclined surface at both ends in the circumferential direction of the outer ring, a guide channel is formed between the guide inclined surface and the inner circumferential surface of the outer ring, and a driving block matched with the top block is arranged at the outer end of the plug.

3. The manually-driven pipe switching mechanism according to claim 2, wherein said driving block is a roller structure, and said driving block is in contact with said top block through a circumferential surface.

4. The manually-actuated duct switching mechanism according to claim 1, wherein said communication hole has a straight line structure, and said communication hole and said extension are located on the same straight line.

5. The manually-driven pipeline switching mechanism according to claim 1, wherein a large diameter section is provided at an outer end of said internally threaded pipe section to form a first sealing step, a second sealing step is formed between said externally threaded pipe section and the connector head, said sealing assembly comprises an annular groove provided on said second sealing step and extending circumferentially along the connector head, an annular sealing bladder located in said annular groove, and a sealing ring provided on said first sealing step and extending circumferentially along the internally threaded pipe section, said sealing ring being capable of penetrating into said annular groove to press said annular sealing bladder so that said annular sealing bladder deforms to sealingly connect said first sealing step and said second sealing step together, and said connector head being capable of being inserted into said large diameter section.

6. The manually-driven pipeline switching mechanism according to claim 5, wherein the sealing ring is provided with a plurality of annular sealing teeth which are sequentially sleeved together, and the annular sealing teeth extend along the circumferential direction of the internally threaded pipeline section.

7. The manually-driven pipeline switching mechanism according to claim 1, wherein the automatic assembly and disassembly mechanism comprises an axial insertion hole formed in an inner end surface of the inner and outer threaded pipe section, a first lock pin inserted into the axial insertion hole, and a first lock pin extension spring for driving the first lock pin to extend out of the inner end surface of the axial insertion hole, wherein a radial insertion hole penetrating through an inner circumferential surface of the inner and outer threaded pipe section, an annular locking groove formed in an outer circumferential surface of the outer threaded section and capable of aligning with the radial insertion hole and extending circumferentially along the outer threaded section, a second lock pin inserted into the radial insertion hole, and a second lock pin extension spring for driving the second lock pin to be inserted into the annular locking groove are formed in the axial insertion hole, the second lock pin is provided with an unlocking hole aligned with the first lock pin, and an insertion guide head is formed in an inner end of.