TWI605195B - Pneumatic suction and drainage fluid conveying device - Google Patents

Description

Pneumatic suction and discharge fluid delivery device

The invention relates to a control assembly for opening and closing an output end of a high pressure gas delivery pipeline based on a venturi.

The venturi is a tubular structure having a variation in inner diameter with one end being the inlet end and the other end being the outlet end. The tubular structure has a section of the throat that has a reduced diameter. The high pressure gas flows through the venturi, and the gas flow rate changes due to the difference in internal pipe diameter, thereby causing a pressure difference in the pipe. The outlet end opens and fluid in the confined space in communication with the throat section is drawn into the tube. The outlet end is blocked, and the high-pressure gas can be injected into the closed space connected thereto through the venturi. Through this principle, fluid transport in a confined space can be controlled.

The invention provides a novel control component for opening and closing the output end of a high pressure gas delivery pipeline based on a venturi tube.

The invention relates to a pneumatic suction and discharge fluid conveying device, which comprises a high pressure flow tube based on a venturi tube, wherein one end of the high pressure flow tube is an input end and the other end is an output end; the input end is connected to a high pressure gas source, The opening and closing of the output end is controlled by a control unit; the high pressure flow tube is connected to a closed container by a negative pressure line and a high pressure line; the control component comprises: a joint connected to the output end of the high pressure flow tube, the The inside of the joint has an accommodating space extending through the two ends; a switch includes a plunger and an enlarged diameter portion connected to one end of the plunger; the plunger extends through the accommodating space The expansion portion is located outside the joint; the switch can reciprocate along the joint at a blocking position and an open position; in the blocking position, the output end of the high pressure flow tube is blocked; In the open position, the output end of the high pressure flow tube is opened; a latching structure is disposed on the switch and the joint, the switch is closed with respect to the blocking position, and the latching structure prevents the latch from being disengaged from the latch.

The effect of the invention: the output of the high pressure flow tube is blocked or opened by the control assembly.

The high-pressure flow pipe is blocked, and the high-pressure gas is input from the input end of the high-pressure flow pipe and passes through the venturi, enters the closed container connected with the positive pressure pipe, and the inside of the sealed container is pressurized to release the fluid inside. Out. Opening the output end of the high pressure flow tube, the high pressure gas flows through the throat section of the venturi, and the pressure is reduced to form a suction force, so that the air of the closed container enters the high pressure flow tube through the negative pressure line, with the high pressure gas coming from the The output port is released.

The switch of the control component is reciprocally displaceable at a blocking position and an open position, and the switch is fixed by the latching structure in the blocking position.

The switch of the control component is in the blocking position, so that the output end of the high pressure flow tube is completely airtight.

10‧‧‧High pressure flow tube

100‧‧‧ venturi tube

101‧‧‧ throat neck

102‧‧‧section

11‧‧‧ input

12‧‧‧ Output

32‧‧‧Plunger

33‧‧‧Expanding Department

331‧‧‧Washers

34‧‧‧ flow path

35‧‧‧ release

351‧‧‧ end

53‧‧‧Unlocking Department

54‧‧‧Direct arrow indicator

55‧‧‧Spin arrow indicator

56‧‧‧Axial blocking parts

57‧‧‧Rotary stop

60‧‧‧ Spring

13‧‧‧ switch

14‧‧‧Negative pressure pipeline

15‧‧‧ positive pressure pipeline

16‧‧‧ check valve

17‧‧‧ check valve

20‧‧‧Control components

21‧‧‧Connectors

22‧‧‧ accommodating space

221‧‧‧ side wall

222‧‧ ‧ retaining wall

23‧‧‧ thread

24‧‧‧Tense components

31‧‧‧Toggle switch

352‧‧‧ distance

36‧‧‧ gap

37‧‧‧Center shaft tube

38‧‧‧Slip ring torus

39‧‧‧Scratch

40‧‧‧ §

41‧‧‧stops

42‧‧‧ Ring

43‧‧‧ wearing sets

44‧‧‧Connecting components

50‧‧‧Locking structure

51‧‧‧Locking parts

52‧‧‧Locking Department

61‧‧‧ positioning ring

90‧‧‧Contained container

91‧‧‧ pressure gauge

92‧‧‧pressure relief valve

93‧‧‧Infusion line

Figure 1 is a perspective view of the conveying device of the present invention.

Figure 2 is an exploded perspective view of the control assembly of the conveyor apparatus of the present invention.

Figure 3 is a cross-sectional view of the control assembly of the present invention blocking the output of the conveyor.

Figure 4 is a cross-sectional view of the control assembly of the present invention opening the output of the conveyor.

Figure 5 is a schematic view showing the appearance and blocking operation of the control assembly of the present invention.

Figure 6 is a schematic view showing the appearance and opening operation of the control assembly of the present invention.

As shown in Figures 1 and 3, the fluid delivery device of the present invention comprises a high pressure flow tube 10 having a venturi 100 as a flow path, the high pressure flow tube 10 having an input end 11 at one end and an output end 12 at the other end. The input terminal 11 is connected to a high-pressure gas source (not shown) and is controlled to open and close by a switch 13. The opening and closing of the output terminal 12 is controlled by a control unit 20. A negative pressure line 14 is in communication with the throat section 101 of the venturi 100, and a positive pressure line 15 is in communication with the tube section 102 of the high pressure flow tube 10 adjacent the output end 12. The negative pressure line 14 and the positive pressure line 15 are connected to a closed container 90, which is further provided with a pressure gauge 91, a pressure relief valve 92, and an infusion line 93. The negative pressure line 14 is provided with a one-way valve 16 which allows the fluid in the hermetic container 90 to flow in one direction to the high pressure flow tube 10 and to prohibit reverse flow. The positive pressure line 15 is provided with a check valve 17, allowing the fluid of the high pressure flow tube 10 to flow to the closed container 90 and prohibiting reverse.

As shown in FIGS. 2 to 4, the control unit 20 includes a joint 21 connected to the output end of the high-pressure flow tube 10 via a thread 23 and a stopper member 24, and the joint 21 has an accommodation space 22 penetrating both ends. A changeover switch 31 includes a plunger 32 and an enlarged diameter portion 33 connected to one end of the plunger 32. The plunger 32 is permeable to the accommodating space 22 of the joint 21 and reciprocally movable. The enlarged diameter portion 33 is located outside the joint 21, and a washer 331 is disposed on the end surface of the joint 21. The inner portion of the plunger 32 is axially disposed with a flow path 34 that is open toward the accommodating space 22. The side wall of the plunger 32 is provided with a plurality of discharge ports 35 communicating with the flow path 34, and the end 351 of the discharge port 35 is spaced a distance 352 from the enlarged diameter portion 33.

As shown in FIG. 3, the plunger 32 moves to the inside of the accommodating space 22, and the switch is located at a blocking position, and the enlarged diameter portion 33 seals the end surface of the joint 21 with the washer 331. 35 completely enters the accommodating space 22 and is closed by the side wall 221 of the accommodating space 22, and the output end 12 of the high-pressure flow tube 10 is blocked. High pressure gas is introduced from the input end 11 through the venturi tube but cannot be released from the output end 12, so that it is infused through the positive pressure line 15 to the hermetic container 90. The fluid inside the hermetic container 90 is squeezed out through its infusion line 93 for outward output.

As shown in FIG. 4, the plunger 32 moves to the outside of the accommodating space 22 until the vent 35 is exposed outside the joint 21. The switch is in an open position, and the output end 12 of the high pressure flow tube 10 is opened. High pressure gas is introduced from the input end 11 through the venturi 100, the accommodating space 22 of the joint 21, and the flow path 34 of the plunger 32, and is released from the discharge port 35. The high pressure gas flows through the throat section 101 of the venturi 100, and the pressure is reduced to form a suction force, so that the air of the hermetic container 90 enters the high pressure flow tube 10 through the negative pressure line 14, along with the high pressure gas from the plunger 32. The output port 35 is released. In Figs. 3 and 4, the reciprocating movement of the changeover switch 31 can be manually operated.

As shown in FIGS. 2 to 4, in order to prevent the switch 31 from being disengaged from the joint 21, the switch 31 has a limit structure between the switch 31 and the switch 21, and the limit switch prevents the switch. The switch 31 is separated from the joint 21; the limiting structure includes a side wall 221 of the accommodating space 22 to reduce the diameter to form a retaining wall 222, and an outer wall of the end of the plunger 32 is provided with a stopping portion 41. When the changeover switch 31 is moved outwardly along the accommodating space 22 until the release port 35 is exposed outside the joint 21, the retaining wall 222 blocks the stop portion 41, that is, the switch 31 is prevented from coming off the joint 21 Effect. Further, the stopper portion 41 is formed on a stopper 40 assembled to the end of the plunger 32. The retaining member 40 includes a ring 42 having a circumferential outer wall extending radially from the plurality of retaining portions 41. The circumferential outer wall of the ring 42 extends axially through the plurality of sleeve portions 43. The end of the plunger 32 is provided with a notch 36 for receiving the stop portion 41. The ring 42 is connected to the central shaft tube 37 of the plunger 32 by a connecting member 44. The blocking portion 41 is located in the notch 36 and protrudes from the outer wall of the plunger 32. The stop 40 The stop portion 41 and the sleeve portion 43 do not block the flow passage 34 of the plunger 32, and the flow passage 34 is still in communication with the accommodation space 22 of the joint 21.

In the case where the high-pressure flow tube 10 is blocked by the changeover switch 31 in Fig. 3, the changeover switch 31 must be locked and fixed so as not to be rushed away by the high-pressure gas. 2, 5, and 6 illustrate a latching structure 50 of the changeover switch 31, including a latching member 51 formed on the enlarged diameter portion 33 of the changeover switch 31, and a member formed on the outside of the joint 21 for receiving the latching member 51. The latching portion 52 and an unlocking portion 53. The unlocking portion 53 provides a path in which the latching member 51 reciprocally linearly displaces along the axial direction of the joint 21. The latching portion 52 is coupled to the unlocking portion 53 and provides a path for the reciprocating rotational displacement of the latching member 51 about the axis of the joint 21. The latching portion 52 is further provided with an axial blocking member 56 and a rotating blocking member 57 connecting the axial blocking member 56. The axial blocking member 56 blocks the locking member 51 located in the locking portion 52 to prevent the locking member. The member 51 is disengaged from the latching portion 52 along the axial direction of the joint 21, and the swivel blocking member 57 limits the angle of rotation of the latching member 51 from the unlocking portion 53 into the latching portion 52.

Figures 3 and 5 depict the locked state of the latching structure 50. An arrow indicator is provided on the outside of the joint 21, and the switch 31 is moved along the unlocking portion 53 in the direction of the joint 21 by the latching member 51 according to the indication of the straight arrow indicator 54 until the enlarged diameter portion 33 The washer 331 seals the end of the joint 21; then, according to the instruction of the direction of the arrow indicator 55, the changeover switch 31 is rotated, and the lock member 51 is rotationally displaced from the unlocking portion 53 into the lock portion 52. The axial blocking member 56 blocks the blocking member 51, the switching switch 31 is blocked, and the output end 12 of the high pressure flow tube 10 is blocked. The detail that is worthy of explanation is about the distance 352 mentioned in FIG. 2, which has the function of reducing the impact load of the washer 331 on the high pressure gas, because the distance 352 completely retracts the release port 35 into the accommodating space. 22, and is closed by the side wall 221, the side wall 221 blocks the high pressure gas from rushing toward the washer 331 from the discharge port 35, and therefore, the washer 331 does not have to withstand the impact of high pressure gas. It can extend its service life and sealing effect.

Figures 4 and 6 depict the unlocked state of the latching structure 50. The latching member 51 is rotationally displaced from the latching portion 52 into the unlocking portion 53 by the reverse of the state of the third and fifth views, and the latching structure 50 is opened to restore the changeover switch 31 along the joint 21 The freedom of the reciprocating movement of the shaft center and the output end 12 of the high pressure flow tube 10 are opened. In order to facilitate the user's manual operation of the changeover switch 31, the enlarged diameter portion 33 is provided with a slip ring surface 38 and a grip portion 39 protruding from the end surface of the enlarged diameter portion 33.

As shown in FIGS. 2 to 4, a spring 60 is disposed between the switch 31 and the tube section 102 of the high pressure flow tube 10. The first end of the spring 60 abuts against a positioning ring 61. The positioning ring 61 is fixed to the The inner end of the tube section 102 of the high-pressure flow tube 10, the second end of the spring 60 is sleeved on the sleeve portion 43 of the stopper 40 and abuts against the stopper portion 41. In the third diagram, the changeover switch 31 blocks the output end 12 of the high pressure flow tube 10, and the spring 60 is compressed by the changeover switch 31 to store energy. In the fourth figure, the changeover switch 31 opens the output end 12 of the high-pressure flow tube 10, the release of the spring 60 pushes the switch 31 to move outward, and the switch 36 is not arbitrarily displaced by the elasticity of the spring 60. .

102‧‧‧section

12‧‧‧ Output

15‧‧‧ positive pressure pipeline

20‧‧‧Control components

21‧‧‧Connectors

22‧‧‧ accommodating space

23‧‧‧ thread

24‧‧‧Tense components

31‧‧‧Toggle switch

32‧‧‧Plunger

33‧‧‧Expanding Department

331‧‧‧Washers

34‧‧‧ flow path

35‧‧‧ release

351‧‧‧ end

352‧‧‧ distance

36‧‧‧ gap

37‧‧‧Center shaft tube

38‧‧‧Slip ring torus

40‧‧‧ §

41‧‧‧stops

42‧‧‧ Ring

43‧‧‧ wearing sets

44‧‧‧Connecting components

50‧‧‧Locking structure

51‧‧‧Locking parts

52‧‧‧Locking Department

53‧‧‧Unlocking Department

54‧‧‧Direct arrow indicator

55‧‧‧Spin arrow indicator

56‧‧‧Axial blocking parts

57‧‧‧Rotary stop

60‧‧‧ Spring

61‧‧‧ positioning ring

Claims (9)

A pneumatic suction and discharge fluid conveying device comprises a high pressure flow tube based on a venturi tube, wherein one end of the high pressure flow tube is an input end and the other end is an output end; the input end is connected to a high pressure gas source, and the output end is connected The opening and closing is controlled by a control component; the high pressure flow pipe is connected to a closed container by a negative pressure pipeline and a positive pressure pipeline; the control component comprises: a joint connected to the output end of the high pressure flow pipe, the joint The inner portion has an accommodating space passing through the two ends; a switch includes a plunger and an enlarged diameter portion connected to one end of the plunger; the plunger extends through the accommodating space of the joint, and the enlarged diameter portion is located at the joint The outer portion of the plunger is axially disposed, and the flow passage is open toward the accommodating space; the side wall of the plunger is provided with at least one release port communicating with the flow passage; the switch can be along the joint a blocking position and an opening position reciprocating; the switching switch is displaced to the blocking position, the release port is completely enclosed inside the joint, the output end of the high pressure flow tube is blocked; and the switching switch is displaced to the open position The release port is exposed outside the connector, the output end of the high-pressure flow tube is opened; the switch has a limit structure between the switch, and the switch is in the open position, the limit structure prevents the switch from being disengaged The latching structure includes at least one latching member formed on the enlarged diameter portion of the diverter switch and at least one latching portion and an unlocking portion formed on the outside of the joint for receiving the latching member, the latching portion being connected to the latching portion The unlocking portion provides a path for the reciprocating linear displacement of the latching member along the axial direction of the joint, the latching portion providing a path for the reciprocating rotational displacement of the latching member about the axis of the joint; the latching portion is provided with a An axial blocking member that blocks the latching member located in the latching portion to prevent the latching member from disengaging the latching portion. The fluid conveying device of the pneumatic suction and discharge according to claim 1, wherein the limiting structure comprises a blocking wall formed by the diameter reduction of the side wall of the accommodating space and a stopping portion provided at the end of the plunger, the switching Regarding the open position, the stop wall blocks the stop. The fluid delivery device of the pneumatic suction and discharge according to claim 2, wherein the stopper is formed in a stopper assembled to the end of the plunger. The pneumatic fluid delivery device of claim 3, wherein the blocking member comprises a ring, the circumferential outer wall of the ring radially extending a plurality of the stopping portions, and the end of the plunger is provided to receive the blocking a notch of the portion, the ring being fixed to the central shaft tube of the plunger by a connecting member, the stopping portion being located in the notch and protruding from the outer wall of the plunger. The pneumatic fluid delivery device of claim 4, further comprising a spring, the first end of the spring ending at a positioning ring, the positioning ring being fixed to the inner wall of the tube segment of the high pressure flow tube opposite to the output end, The second end of the spring is sleeved on the plurality of sleeves extending axially of the ring and resists the stop. The fluid delivery device of the pneumatic suction row according to claim 1, wherein the blocking portion has a rotation blocking member connected to the axial blocking member, the rotation blocking member restricting the locking member from entering the locking portion from the unlocking portion The angle of rotation. The fluid delivery device of the pneumatic suction and discharge according to claim 1, wherein the enlarged diameter portion of the changeover switch is provided with a gasket with respect to an end surface of the joint. The fluid delivery device of the pneumatic suction row according to claim 7, wherein the end of the release port of the switch has a distance from the gasket. The pneumatic conveying device of claim 1, wherein the circumference of the enlarged diameter portion of the switch is a slip ring surface;