TWI468888B - Throttle valve - Google Patents

Description

Vane throttle

The invention relates to a vane type throttle valve.

The conventional vane type throttle valve includes a plurality of flat blades, and the switching angle of the throttle valve is adjusted by changing the inclination angle of the blades by rotating the blades. However, as the size of the throttle valve increases, the section is adjusted only by rotating the blades. The angle of the flow valve switch does not accurately control the flow of the fluid. Especially for vacuum coating equipment, the larger the size of the throttle valve, the more waste of gas, and the more difficult it is to control the vacuum inside the equipment.

In view of this, it is necessary to provide a vane type throttle valve that can precisely control the switching angle.

A vane type throttle valve includes a plurality of vanes, each of which is provided with at least one through hole, each of which is slidably connected to a baffle, and the baffle is provided with a perforation corresponding to the through hole in the vane, The baffle slides relative to the blade to adjust the degree of switching of the through hole in the blade.

Compared with the prior art, the vane type throttle valve can adjust the degree of opening and closing of the through hole on the vane by the relative sliding of the baffle and the vane, thereby accurately controlling the flow of the fluid through the vane type throttle valve and saving the fluid.

10‧‧‧shell

30‧‧‧ leaves

32‧‧‧through hole

34‧‧‧Chute

36‧‧‧ channel

50‧‧ ‧ baffle

52‧‧‧Perforation

54‧‧‧ ribs

70‧‧‧Connecting parts

72‧‧‧ Connecting rod

74‧‧‧Connecting piece

90‧‧‧Fixed parts

92‧‧‧Fixed rod

94‧‧‧Fixed tablets

1 is a schematic view of a vane type throttle valve according to a preferred embodiment of the present invention.

Fig. 2 is another perspective view of the blade, showing only one of the blades for simplicity of illustration.

Fig. 3 is a schematic view showing a state in which the baffle slides relative to the blade to partially close the through hole in the blade.

Fig. 4 is a schematic view showing a state in which the baffle slides against the blade to completely close the through hole in the blade.

As shown in FIG. 1, a vane type throttle valve according to a preferred embodiment of the present invention includes a housing 10, a plurality of vanes 30 disposed in the housing 10, and a plurality of baffles 50.

The number of the blades 30 can be changed as needed, and in the present embodiment, only five blades 30 are shown for simplicity of illustration. The blades 30 are evenly spaced and integrally connected by a connecting member 70. The connecting member 70 includes an elongated connecting rod 72 and a plurality of connecting pieces 74 rotatably connected to the connecting rod 72. The number is set according to the number of the blades 30, and each of the connecting pieces 74 is connected to the upper surface of one of the blades 30, and the connecting piece 74 and the blade 30 may be attached by adhesion, welding or the like.

Each of the vanes 30 has a thin plate shape, and the vane 30 is provided with a plurality of through holes 32 penetrating the vanes 30, and the through holes 32 are substantially uniformly distributed on the vanes 30. The two ends of the blade 30 respectively form a support shaft 38. The support shaft 38 is fixedly coupled to the opposite wall surfaces of the housing 10, and the blade 30 forms a rotational connection with the support shaft 38. The blade 30 located in the middle is connectable to a rotary drive member to drive the blade 30 to rotate, adjusting the angle of the switch of the blade 30. Since the connecting member 70 connects all the blades 30 as one body, when the rotating driving member drives the intermediate blades 30 to rotate, all the blades 30 can be driven to rotate synchronously.

A baffle 50 is disposed on the lower surface of each of the blades 30, and each of the baffles 50 is provided with a plurality of through holes 52 penetrating the baffle 50. The number, position and size of the perforations 52 are on the blade 30. The number, position, and size of the through holes 32 are the same. The baffle 50 is integrally connected, and the connection manner is similar to that of the blade 30. In this embodiment, the baffle 50 is integrally connected by a fixing member 90. The fixing member 90 includes an elongated fixing rod 92 and a plurality of rotating members. The fixing pieces 94 are connected to the fixing rods 92, and the fixing pieces 94 are respectively connected to the lower surface of the baffle 50 to integrally connect all the baffles 50.

As shown in FIG. 3, a sliding connection is formed between the baffle 50 and the corresponding blade 30. In this embodiment, the lower surface of the blade 30 is recessed inwardly to form two sliding slots 34. The upper surface of the baffle 50 is convexly formed outwardly. Two ribs 54 that cooperate with the chute 34. In order to avoid the influence of the through holes 32 on the blade 30, the two sliding grooves 34 on the blade 30 are disposed on both sides of the through hole 32. Accordingly, the ribs 54 on the baffle 50 are also divided into two of the through holes 52. side. The depth of the sliding groove 34 is smaller than the thickness of the blade 30, and does not penetrate the blade 30 in the thickness direction. The cross section of the sliding groove 34 is substantially trapezoidal, and the width of the sliding groove 34 gradually decreases from the outside to the inside, that is, the sliding groove 34 It is the narrowest at the lower surface of the blade 30. The height of the ridge 54 is not greater than the depth of the chute 34. Preferably, in the present embodiment, the height of the rib 54 is comparable to the depth of the chute 34. The rib 54 has a trapezoidal cross section, the upper width is narrower, and the width of the top end of the rib 54 is equivalent to the maximum width of the sliding groove 34, which is larger than the width of the sliding groove 34 at the lower surface of the blade 30, the ridge 54 and the baffle. The width of the junction of 50 is substantially equivalent to the width of the chute 34 at the lower surface of the blade 30. When the baffle 50 is connected to the blade 30, the two ribs 54 are slidably received in the two sliding slots 34 of the blade 30. Due to the limitation of the width of the sliding slot 34, the ridge 54 is not detached from the sliding slot 34, and is convex. The strip 54 forms a snap connection with the chute 34 to stably connect the baffle 50 to the blade 30. It can be understood that the sliding groove 34 of the blade 30 forms a snap fit with the rib 54 of the baffle 50 in order to connect the baffle 50 to the blade 30, and the chute 34 can also be disposed on the baffle 50, and the rib 54 is disposed on the blade 30 such that the ridges 54 on the assembled blade 30 are snapped into the slots 34 of the baffle 50 to connect the two together. The shape of the ridge 54 and the chute 34 is not limited to the trapezoid described above.

A baffle 50 located in the middle, that is, a baffle 50 abutting against the intermediate blade 30, corresponding to one end provided with a rotary driving member for connecting a sliding driving member, the sliding driving member can drive the intermediate block The plate 50 slides relative to the blade 30, which in turn drives all of the baffles 50 to slide relative to the blade 30.

1 shows the blade 30 in a fully open state, in which all the blades 30 are parallel to each other and are horizontal, and the baffle 50 is fitted under the corresponding blade 30 to completely overlap the blade 30. A passage 36 is formed between adjacent two vanes 30 for fluid passage therethrough. The height of the passage 36 is no greater than the width of the vane 30. Preferably, the width of the vane 30 is slightly greater than the height of the passage 36. The connecting member 70 is disposed on the rear side of the blade 30, and the fixing member 90 is disposed on the front side of the blade 30. When the rotational driving member is activated to adjust the angle of the blade 30, the blade 30 and the connecting piece 94 of the connecting member 70 are centered on the supporting shaft 38. The shaft is rotated in the clockwise direction, at the same time, the baffle 50 attached to the blade 30 and the fixing piece 94 of the fixing member 90 are synchronously rotated in the clockwise direction to gradually close the passage 36 between the blades 30. When all of the blades 30 are rotated to a large vertical state, since the width of the blades 30 is greater than the height of the passages 36 between the blades 30 when the blades 30 are horizontal, the adjacent blades 30 partially overlap, and all the blades 30 together form a continuous On the wall, the blade 30 is in a closed state. Referring to FIG. 2, since the blade 30 is provided with a through hole 32, the baffle 50 is provided with a through hole 52, and at this time, the baffle 50 overlaps the blade 30, and the through hole 52 on the baffle 50 and the through hole 32 in the blade 30 are provided. Connected separately, a small amount of fluid can be circulated, that is, when the blade 30 is rotated to the closed state, the passage 36 is not completely closed, and a small amount of fluid is still circulated, which is equivalent to reducing the size of the passage 36.

As shown in FIG. 3, when it is desired to further reduce the flow rate of the fluid, the slide drive member can be activated to drive the shutter 50 to slide relative to the blade 30. As the shutter 50 moves, the perforation 52 on the shutter 50 is offset from the blade 30. Through hole 32, the through hole 32 of the blade 30 is gradually blocked by the baffle 50 is blocked, and the perforations 52 on the baffle 50 are also gradually blocked by the perforations 52 on the vanes 30, and the portion of the perforations 52 overlapping the through holes 32 is gradually reduced, that is, the passage 36 through which the fluid can flow is smaller and smaller. As shown in FIG. 4, when the baffle 50 slides until the perforation 52 is completely offset from the through hole 32 in the blade 30, the through hole 32 of the vane 30 is completely blocked by the baffle 50, while the perforation 52 on the baffle 50 is also completely covered by the vane. The perforations 52 in the 30 are blocked, at which point the passage 36 is completely closed, restricting the flow of fluid, that is, the vane type throttle is entirely closed.

Therefore, the vane type throttle valve can gradually adjust the degree of switching of the through hole 32 on the vane 30 through the sliding baffle 50, and gradually adjust the flow rate of the fluid, thereby precisely controlling the flow rate of the fluid flow and avoiding waste of the fluid, for the vacuum coating equipment. In this case, since the vane type throttle valve can gradually adjust the flow rate of the fluid, the gas in the apparatus can be extracted as much as possible to achieve a high degree of vacuum.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above is only a preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be covered by the following claims.

30‧‧‧ leaves

32‧‧‧through hole

34‧‧‧Chute

50‧‧ ‧ baffle

52‧‧‧Perforation

54‧‧‧ ribs

30‧‧‧ leaves

32‧‧‧through hole

34‧‧‧Chute

50‧‧ ‧ baffle

52‧‧‧Perforation

54‧‧‧ ribs

30‧‧‧ leaves

32‧‧‧through hole

34‧‧‧Chute

Claims (9)

A vane type throttle valve comprising a plurality of vanes, wherein the improvement is that each of the vanes is provided with at least one through hole, and each of the vanes is slidably connected to a baffle, and the baffle is provided with a through hole on the vane Corresponding perforations, the baffle is slidable relative to the blade to adjust the degree of opening and closing of the through hole on the blade, and one of the blade and the baffle is provided with at least one chute, and the other of the baffles is provided with a convexity matched with the chute The strip is clamped in the sliding slot to connect the baffle to the blade. A vane type throttle valve according to claim 1, wherein all the vanes are integrally connected, and one end of one of the vanes is used to connect a rotary drive member to drive all the vanes to rotate synchronously. A vane type throttle valve according to claim 1 or 2, wherein all of the baffles are integrally connected, wherein one end of a baffle is used to connect a sliding drive member to drive all of the baffles to slide synchronously with respect to the vanes. The vane type throttle valve according to claim 3, further comprising a fixing member, wherein the fixing member comprises an elongated fixing rod and a plurality of fixing pieces rotatably coupled to the fixing rod, each fixing The sheets are attached to a baffle to connect all of the baffles together. The vane type throttle valve according to claim 2, further comprising a connecting member, the connecting member comprising an elongated connecting rod and a plurality of connecting pieces rotatably connected to the connecting rod, each connection The sheets are attached to a blade to join all the blades together. The vane type throttle valve according to claim 1, further comprising a connecting member for integrally connecting all the baffles and a fixing member for integrally connecting all the blades, wherein the fixing member and the connecting member are respectively disposed on On opposite sides of the blade, the fixing member is coupled to the outer surface of the baffle away from the blade, and the connecting member is coupled to the outer surface of the blade away from the baffle. The vane type throttle valve according to claim 1, wherein the rib and the sliding groove have a trapezoidal cross section. The blade type throttle valve according to claim 1, wherein each of the blades is provided with two sliding slots and a plurality of through holes, and the sliding slots are located on opposite sides of the through hole, and each of the baffles is provided Two ribs and a plurality of perforations, the ribs being located on opposite sides of the perforation. The blade type throttle valve according to claim 1, further comprising a housing for receiving the blade and the baffle, each of the blades is provided with a support shaft at one end thereof, and one end of the support shaft is Rotatingly connected to the blade, the other end is fixedly connected to the housing.