TWI551798B - Gate valve with secure sealing mechanism - Google Patents

Description

Gate valve with locking function

The invention relates to a gate valve, in particular to a gate valve having a locking function.

A valve body mechanism for selectively closing or opening a valve port in a housing, wherein the valve port has a valve seat surface, wherein the valve body mechanism includes at least one valve member, is disclosed in US Pat. No. 7,341,237. Parallel or vertical movement in the housing relative to the valve seat surface; a drive plate is disposed in the housing and coupled to the at least one valve member, the drive plate is translatable in the valve body, thereby causing at least one valve member Produce parallel movements.

However, although the valve body mechanism can drive the valve member to generate translational and vertical displacement through the driving plate to close the valve port, the valve body mechanism does not have any locking device or means for firmly locking the valve member in the closed position. In the above, the driving plate is easily subjected to external factors and forced to generate micro-motion or displacement, which will make the valve member unable to effectively adhere to the valve port. In severe cases, the valve port will leak fluid, resulting in unnecessary loss of the manufacturer.

In order to solve the above problems, the present invention discloses a gate valve having a locking function, which utilizes a non-linear driving trajectory for a circular motion of a rolling element of a swing arm to drive a sliding seat therein. Sliding so that the valve member closes the valve port of the body, and when the swing arm can be in a first locking position or a second locking position, the direction of the moving path of the sliding seat is offset, so that the sliding seat is not easily subjected to external force. The effect is swaying so that in the second locked position, the valve member is more likely to be tightly closed.

In order to achieve the above object, the present invention provides a gate valve having a locking function, comprising: a body having a valve port; a driver disposed on the body; a sliding seat linearly slidingly disposed in the body; a swing arm, One end is connected to the driver, and the other end is connected to the sliding seat, so as to drive the swing arm to move circumferentially between a first locking position and a second locking position through the driving device to drive the sliding seat to slip, wherein the swing arm When in the first locking position or the second locking position, the swing arm is offset from the moving path of the sliding seat; a valve member is disposed on the sliding seat for parallel or vertical displacement with respect to the valve opening; When the swing arm is in the first locking position or the second locking position, the sliding of the sliding seat can be avoided.

Preferably, the sliding seat is laterally provided with a driving chute, the driving chute has a non-linear driving track, and one end of the swing arm has a rolling member disposed in the driving chute and performs circular motion along the driving track to drive The carriage reciprocates between the two ends of the body.

Preferably, the driver of the present invention is rotatably disposed on the body and is operated manually.

Preferably, the driving track of the present invention comprises a first driving segment, a second driving segment and a third driving segment, and the second driving segment is obliquely connected between the first driving segment and the third driving segment for scrolling When the piece moves from the first drive section to the second drive section, the valve member is displaced vertically relative to the valve port to close the valve port.

Preferably, the sliding seat of the present invention has two parallel first guiding portions, and the valve member has a second guiding portion connected thereto, the first guiding portion has a connecting groove, and the second guiding portion has a matching groove. And connected The connecting groove is disposed at 180 degrees, and the plurality of round rods are disposed between the connecting groove and the matching groove, so that the connecting groove overlaps with the matching groove and cooperates. In order to stably control the displacement of the valve member relative to the slider, and to close the valve port.

10‧‧‧ Ontology

11‧‧‧ first end

12‧‧‧ second end

13‧‧‧ valve port

14‧‧‧Leading film

15‧‧‧ positioning slot

151‧‧‧Bending section

End section 152‧‧‧

20‧‧‧ drive

21‧‧‧ Fixed Department

22‧‧‧ Activities Department

23‧‧‧ shaft

231‧‧‧ card block

24‧‧‧Operation lever

30‧‧‧Slide

31‧‧‧ drive chute

32‧‧‧ Drive track

321‧‧‧First drive segment

322‧‧‧second drive segment

323‧‧‧third drive segment

33‧‧‧First contact roller

34‧‧‧镂空部

35‧‧‧First Guidance

36‧‧‧ first board

37‧‧‧Connection slot

371‧‧‧ first end

372‧‧‧ second end

373‧‧‧ skewed section

38‧‧‧Second touch roller

39‧‧‧guide wheel

40‧‧‧ swing arm

41‧‧‧Kakong

42‧‧‧Rolling parts

43‧‧‧Locker

50‧‧‧ valve parts

51‧‧‧Second guidance

52‧‧‧Second board

53‧‧‧With slot

531‧‧‧ first end

532‧‧‧ second end

533‧‧‧ skewed section

54‧‧‧guide wheel

60‧‧‧ round rod

70‧‧‧ linkage board

A‧‧‧ arrow

B‧‧‧ arrow

100‧‧‧ gate valve

Fig. 1 is a schematic view showing the appearance of the present invention.

2 is a schematic view of the internal structure of the present invention, showing the sliding seat at the first end of the body.

3 is a schematic view of the internal structure of the present invention, showing the sliding seat at the second end of the body.

FIG. 4 is a schematic view showing a state in which the driver and the swing arm of the present invention are combined.

Fig. 5 is a schematic cross-sectional view showing a valve closing valve port of the present invention.

Fig. 6 is a schematic transverse cross-sectional view showing the state of contact of the slider with the body.

Fig. 7 is a schematic exploded view showing the structure of the slide seat and the valve member of the present invention.

8A to 8C are diagrams showing displacement states of the connecting groove and the fitting groove of the present invention.

9A to 9D are various positional states of the swing arm of the present invention with respect to the drive chute.

For the convenience of the description, the central idea expressed by the present invention in the column of the above summary of the invention is expressed by the specific embodiments. The various items in the embodiments are set forth in proportion to the description and not in the

Referring to FIG. 1 to FIG. 9 , the gate valve 100 with locking function of the present invention comprises a body 10 , a driver 20 , a sliding seat 30 , a swing arm 40 and a valve member 50 . The body 10 is hollow and has a first end 11 and a second end 12, and the side of the second end 12 is provided with an open shape. The valve port 13 is driven by the driver 20 to rotate the swing arm 40, and the drive carriage 30 can be reciprocated in the direction indicated by the arrow A of FIG. 2 to close the valve port 13 by the valve member 50.

The body 10 has a guiding piece 14 on each side of the inner edge. The guiding piece 14 has a positioning groove 15 adjacent to the valve opening 13. The positioning groove 15 has a bent portion 151 and an end portion 152.

The driver 20 is disposed on the body 10. As shown in FIG. 4, the driver 20 is rotatably disposed on the body 10 in a preferred embodiment of the present invention and is manually operated, and the driver 20 can of course be pneumatically operated. drive. Further, the driver 20 includes a fixing portion 21, a movable portion 22, a rotating shaft 23 and an operating lever 24. The fixing portion 21 is fixed on the top surface of the main body 10, and the movable portion 22 is rotatably disposed on the fixing portion 21. The rotating shaft 23 is sleeved with a bearing and disposed longitudinally between the movable portion 22 and the fixing portion 21, and the end portion thereof is extended. The operating rod 24 is disposed between the movable portion 22 and the rotating shaft 23, and is preferably screwed to the rotating shaft 23 for controlling the rotating shaft 23 to rotate. In addition, the end of the rotating shaft 23 further has a block 231. The block 231 is used to be clamped on the swing arm 40, so that the driver 20 drives the swing arm 40 to operate.

The sliding block 30 is linearly slidably disposed in the body 10. The sliding seat 30 is laterally disposed at one end thereof with a driving chute 31. The driving chute 31 has a non-linear driving track 32, and the driving track 32 includes a first driving. The third driving segment 322 is obliquely connected between the first driving segment 321 and the third driving segment 323, and the first driving segment 321 and the third driving segment are connected to the third driving segment 322 and the third driving segment 323. The end of 323 is arc-shaped. The slider 30 is respectively provided with a first contact roller 33 at four corners for rolling contact with the inner sides of the two guiding pieces 14.

The sliding seat 30 is provided with a hollow portion 34 adjacent to the driving chute 31. The hollow portion 34 is fixed with two parallel first guiding portions 35. The first guiding portion 35 is two parallel and spaced apart by a distance. The plates 36 are composed, and each of the first plates 36 has two connecting grooves 37, and the connecting grooves 37 of the two first plates 36 are symmetrical to each other. The connecting slot 37 has a first end 371 and a second end 372. The first end 371 and the second end 372 have a skewed section 373. This is shown in Figures 8A to 8C.

Further, the sliding seat 30 is provided with a second contact roller 38 at each end of each of the first guiding portions 35 for rollingly contacting the inner wall surface on the opposite side of the valve opening 13. The second contact roller 38 at one end of the first guiding portion 35 is disposed between the two first plates 36, and the second contact roller 38 at the other end is disposed on the outer first plate 36.

Further, the slider 30 is provided with a guide wheel 39 adjacent to the end edge of the driving chute 31 for contacting the inner wall surface on the same side of the valve port 13. As shown in Figure 6. The slider 30 can be easily slid into the body 10 through the first contact roller 33, the second contact roller 38 and the guide wheel 39.

The swing arm 40 has a latching hole 41 at one end and a rolling member 42 at the other end for receiving in the driving chute 31. The card hole 41 of the swing arm 40 is fixedly locked by the block 231 of the rotating shaft 23, and is horizontally locked to the card hole 41 and the block 231 by a locking member 43. Wherein, the swing arm 40 is composed of two pieces, and the lock 43 can be clamped to the two pieces to be fixed. Thereby, the driver 20 can drive the swing arm 40 to perform a circular motion between the first locking position and the second locking position along the driving track 32 of the rolling member 42 for driving the sliding seat 30 to slide on the body 10 Between one end 11 and the second end 12. It is worth mentioning that when the swing arm 40 is in the first locking position or the second locking position, the swing arm 40 is offset from the moving path direction of the slider 30. When the swing arm 40 is in the first locking position and the second locking position, the rolling members 42 are located at the ends of the third driving segment 323. As shown in FIGS. 9A to 9D, the arrow B is the biasing direction of the swing arm 40.

The valve member 50 is disposed on the carriage 30 for parallel or vertical displacement relative to the valve port 13. The valve member 50 has two second guiding portions 51 connected to the first guiding portion 35 for closing the valve opening 13 when interlocked with each other. Preferably, the second guiding portion 51 and the first guiding portion 35 have a similar structure, which are respectively composed of two second plates 52 which are parallel and spaced apart by a distance, and each of the second plates 52 has two matching grooves. 53, cooperation The groove 53 has the same shape as the connection groove 37 and is disposed at 180 degrees. The mating slot 53 also has a first end 531, a second end 532, and a skewed section 533 therebetween, as shown in Figures 8A-8C. Each of the two second plates 52 is disposed between each of the two first plates 36, and a linking plate 70 is further disposed between each of the second plates 52. The two sides of the valve member 50 respectively have a guiding roller 54 for rolling contact with the guiding piece 14.

A plurality of round rods 60 are disposed between the connecting grooves 37, the engaging grooves 53 and the respective linking plates 70 for overlapping and cooperating with the engaging grooves 53, and the round rods 60 are transmitted through The linkage plate 70 can be moved synchronously. When the rolling member 42 of the swing arm 40 is moved into the driving slot 31 and moved to the second driving portion 322, the guiding roller 54 enters the bent portion 151 of the positioning groove 15, and the valve member 50 can be guided by the first guide. The guiding portion 35 is in a linked relationship with the second guiding portion 51 and is vertically displaced with respect to the valve opening 13. Further, when the rolling member 42 of the swing arm 40 is moved into the driving chute 31 and moved to the third driving stage 323, the guiding roller 54 enters the end portion 152 of the positioning groove 15 so that the valve member 50 closely And the valve port 13 is stably closed, as shown in FIG.

As shown in FIGS. 8A to 8C, the movement path of the round rod 60 in the joint groove 37 and the fitting groove 53 will be described. As shown in FIG. 8A, the rounding rod 60 is disposed at the first end 371 of the connecting groove 37 and the second end 532 of the engaging groove 53 through the mating connecting groove 37 and the matching groove 53, and the position is an overlapping area. The round rod 60 is restrained from being engaged by the arcuate end portions of the connecting groove 37 and the engaging groove 53, so as to form a stationary shape and to avoid swaying.

As shown in FIG. 8B, when the carriage 30 is translated in the direction of the arrow A (as shown in FIG. 2), the connecting groove 37 and the engaging groove 53 are interlocked with the round rod 60 until the guiding roller 54 enters the positioning. The end portion 152 of the groove 15 allows the valve member 50 to move vertically toward the valve port 13.

As shown in FIG. 8C, when the rolling member 42 of the swing arm 40 is moved to the third driving stage 323 (as shown in FIG. 3), the round rod 60 can be positioned at the second end 372 of the connecting groove 37 and the matching groove. The first end 531 of the 53 is again formed into a stationary shape, so that the valve member 50 stably seals the valve opening 13.

As shown in Figures 9A-9D, the swing arm 40 is shown in various different positions relative to the drive chute 31. As shown in FIG. 9A, the swing arm 40 is located at the first locking position, and the rolling member 42 is located at the end of the third driving segment 323. At this time, the sliding bracket 30 is at the first end 11 of the body 10, as shown in FIG. 2 is shown.

As shown in FIG. 9B, the swing arm 40 is driven and moved along the drive trajectory 32 of the drive chute 31 to the end of the first drive section 321.

As shown in FIG. 9C, the rolling member 42 of the swing arm 40 moves from the first driving segment 321 to the second driving segment 322. At this time, the sliding bracket 30 approaches the second end 12 of the body 10 and causes the guiding roller. 54 enters the bent portion 151 of the positioning groove 15 to vertically displace the valve member 50 toward the valve port 13 to close the valve port 13, and when the guide roller 54 enters the end portion 152 of the positioning groove 15, the valve member can be made 50 closes the valve port 13 tightly and stably. As shown in Figure 5.

As shown in FIG. 9D, the swing arm 40 is in the second locking position, and the rolling member 42 is again located at the end of the third driving segment 323. When the swing arm 40 is in the first locking position or the second locking position, the pendulum is placed. The direction of the movement path of the arm 40 relative to the carriage 30 is offset, so that the slider 30 can be prevented from swaying, so that in the second locking position, the valve member 50 seals the valve port 13 more tightly, preventing the lateral force from acting on the sliding On the seat 30, it affects the sealing effect of the valve member 50 on the valve port 13.

While the invention has been described in terms of a preferred embodiment, the various embodiments may The above embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention. All modifications or changes made without departing from the spirit of the invention are within the scope of the invention.

<TABLE border="1" borderColor="#000000" width="_0086"><TBODY><tr><td> body 10 guide piece 14 bent part 151 drive 20 drive chute 31 second contact roller 38 rolling 42 Guide roller 54 </td><td> Valve port 13 Positioning groove 15 End portion 152 Slide 30 First contact roller 33 Swing arm 40 Valve member 50 Round rod 60 </td></tr></TBODY ></TABLE>

Claims (17)

A gate valve having a locking function, comprising: a body having a first end and a second end, the second end having a valve port; a driver disposed on the body; a sliding seat linearly sliding Provided in the body, the sliding seat is laterally disposed with a driving chute having a non-linear driving track; a swing arm having one end connected to the driver and the other end having a rolling member disposed thereon Driving in the sliding slot, so that the driver drives the swing arm to perform a circular motion between the first locking position and the second locking position along the driving track for driving the sliding seat to the first end and Between the second ends, wherein the swing arm is in the first locking position or the second locking position, the swing arm is offset from the moving path of the sliding seat; and a valve member is disposed on the a sliding seat for parallel or vertical displacement relative to the valve port; thereby, when the swing arm is in the first locking position, the sliding seat is at the first end, and when the swing arm is located in the second locking position, The carriage is at the second end and A valve member closing the valve port. A gate valve having a locking function according to claim 1, wherein the driver is rotatably disposed on the body and is manually operated. A gate valve having a locking function according to claim 1, wherein the driver includes a fixing portion fixed to the outer side of the body; a movable portion is rotatably disposed on the fixing portion; a rotating shaft is longitudinally disposed on the movable portion and The fixed portion is connected to the swing arm; an operating rod is disposed on the movable portion and the rotating shaft for controlling the rotating shaft to rotate. A gate valve having a locking function according to claim 3, wherein one end of the swing arm has a card hole, and the end of the rotating shaft has a block for being engaged in the card hole. A gate valve having a locking function as claimed in claim 4, further comprising a lock fastener laterally locked to the card hole and the block. The gate valve having a locking function according to claim 1, wherein the driving track comprises a first driving segment, a second driving segment and a third driving segment, and the second driving is obliquely connected to the first driving segment and Between the third drive segments, the valve member is vertically displaced relative to the valve port to close the valve port when the rolling member moves from the first drive segment to the second drive segment. A gate valve having a locking function according to claim 6, wherein the rolling member is located at an end of the third driving segment when the swing arm is in the first locking position and the second locking position. A gate valve having a locking function according to claim 1, wherein the sliding seat is fixed with two parallel first guiding portions, and the valve member has two second guiding portions connected to the two first guiding portions. In order to generate a vertical displacement relative to the valve port for closing the valve port. A gate valve having a locking function according to claim 8, wherein each of the inner edges of the body has a guiding piece, and each side of the valve member has a guiding roller for rolling contact with the guiding sheet. The gate valve having a locking function according to claim 9, wherein each of the guiding pieces has a positioning groove adjacent to the valve port, the positioning groove has a bent portion and an end portion, and the guiding roller is from the bending When the folded portion is moved to the end portion, the valve member is closed to the valve port. A gate valve having a locking function according to claim 8, wherein the first guiding portion has two symmetrically disposed connecting grooves, and the second guiding portion has two symmetrically disposed matching grooves and is connected thereto. The slots are disposed at 180 degrees, and a plurality of round rods are respectively disposed between the connecting slots and the mating slots, so that the connecting slots overlap and cooperate with the mating slots. A gate valve having a locking function as claimed in claim 11, wherein the connecting grooves have the same shape as the matching grooves. The gate valve of claim 12, wherein the connecting slots or the mating slots each have a first end and a second end, and a bias between the first end and the second end Oblique section. The gate valve having a locking function according to claim 11, wherein each of the first guiding portions and each of the second guiding portions are respectively formed by two first plates and a second plate which are parallel and spaced apart by a distance. The two second plates are received between the two first plates, and a linkage plate is arranged between the two second plates to synchronize the movement of the round bars. The gate valve having the locking function according to claim 9, wherein the four corners of the sliding seat respectively have a first contact roller for rollingly contacting the inner sides of the two guiding pieces. The gate valve having a locking function according to claim 1, wherein the sliding seat is provided with a plurality of second contact rollers for rollingly contacting the inner wall surface on the opposite side of the valve port. A gate valve having a locking function according to claim 1, wherein the sliding seat is provided with a guide wheel adjacent to an end edge of the driving chute for contacting an inner wall surface on the same side of the valve port.