Vacuum generator

Abstract

The present application discloses a vacuum generator, which belongs to the technical field of the generator, and includes a venturi nozzle, a receiver nozzle, an interface pipe and a heating pipe, wherein the venturi nozzle is connected to the receiver nozzle, and both the venturi nozzle and the receiver nozzle are connected to the interface pipe; the heating pipe is wound around the interface pipe, and a fixing mechanism for fixing the heating pipe is provided on the interface pipe; a water storage box is fixedly installed on the venturi nozzle, a certain amount of hot water is placed in the water storage box, and a pushing mechanism for transporting the hot water to the heating pipe is provided in the water storage box. The present application uses a fixing mechanism to fix the heating pipe on the interface pipe, and then transports the hot water in the water storage box to the heating pipe through the pushing mechanism, so that the interface pipe can be heated, and the gas at the interface pipe expands due to heat, which can accelerate the gas flow at the interface pipe, thereby improving the effect of extracting vacuum.

Description

Technical Field

[0001] The present application relates to the technical field of generators, and in particular to vacuum generators. Background Art

[0002] The vacuum generator is a new type of vacuum component that uses a positive pressure gas source to generate negative pressure. This makes it very easy and convenient to obtain negative pressure in places where compressed air is available or where positive and negative pressures are required in a pneumatic system. Vacuum generators are widely used in the fields of machinery, electronics, packaging, printing, plastics and robots in industrial automation.

[0003] There is a vacuum generator in the related technology. Referring to the Chinese utility model patent with announcement number CN203394893U, the vacuum generator includes a receiver nozzle and a tubular Venturi nozzle. The Venturi nozzle includes a contraction section and a diffusion section. The contraction section includes a contraction head end and a contraction tail end. The diffusion section includes a diffusion head end and a diffusion end end. The contraction end and the diffusion head end are opposite to each other. The Venturi nozzle is provided with a mounting section on the other side of the diffusion section relative to the contraction section. The inner diameter of one end of the mounting section relative to the diffusion section is larger than the inner diameter of the contraction head end. One end of the receiver nozzle is connected to the Venturi nozzle by the mounting section. The diffusion end is opposite to the receiver nozzle. The inner diameter of the contraction end is equal to the inner diameter of the diffusion head end. The inner diameter of the contraction head end is larger than the inner diameter of the contraction end. The inner diameter of the contraction end is larger than the inner diameter of the diffusion head end. A buffer section is provided between the contraction section and the diffusion section. The inner diameter of the buffer section is equal to the inner diameter of the contraction head end.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: relying solely on the airflow from the Venturi nozzle to the receiver nozzle to create air pressure and thereby extract air may inevitably affect the effect of extracting the vacuum due to insufficient airflow volume and circulation speed. Summary of the invention

[0005] In order to improve the effect of extracting vacuum, the present application provides a vacuum generator.

[0006] The vacuum generator provided in this application adopts the following technical solution:

[0007] A vacuum generator, comprising a venturi nozzle, a receiver nozzle, an interface pipe and a heating pipe, wherein the venturi nozzle is connected to the receiver nozzle, and the venturi nozzle and the receiver nozzle are both connected to the interface pipe;

[0008] The heating tube is wound around the interface tube, and a fixing mechanism for fixing the heating tube is provided on the interface tube;

[0009] A water storage box is fixedly mounted on the venturi nozzle, a certain amount of hot water is placed in the water storage box, and a pushing mechanism for transporting the hot water into the heating pipe is arranged in the water storage box.

[0010] By adopting the above technical scheme, in order to improve the effect of vacuum extraction, firstly, the heating tube is fixed to the interface tube by using a fixing mechanism, and then a certain amount of hot water is injected into the water storage box, and then the vacuum generator is started. While the airflow moves from the Venturi nozzle to the receiver nozzle, the hot water in the water storage box is transported to the heating tube by using a pushing mechanism. Under the action of the hot water in the heating tube, the interface tube can be heated, and the gas at the interface tube expands due to the heat, which can accelerate the gas flow at the interface tube, thereby improving the effect of vacuum extraction.

[0011] Preferably, the fixing mechanism comprises an arc-shaped piece and a rotating plate, the arc-shaped piece is fixedly connected to the rotating plate, and the arc-shaped piece can fit with the heating tube;

[0012] The interface tube is provided with a receiving groove, the rotating plate is hinged to the inner wall of the receiving groove, the rotating plate is fixedly connected to a first torsion spring, and the first torsion spring is fixedly connected to the side wall of the receiving groove;

[0013] A first driving assembly for driving the rotating plate to rotate is arranged in the mouthpiece.

[0014] By adopting the above technical solution, in order to fix the heating tube on the interface tube, under the action of the first torsion spring, the arc-shaped piece is abutted against the heating tube, so that the heating tube can be fixed on the interface tube; when it is necessary to disassemble and replace the heating tube, the first driving component is first used to drive the rotating plate to rotate, and the rotation of the rotating plate drives the arc-shaped piece to rotate, so that the arc-shaped piece and the heating tube are no longer in contact, thereby facilitating the disassembly and replacement of the heating tube.

[0015] Preferably, the first driving assembly comprises a first rack, a second rack and a first gear, the first rack is slidably connected to the inner wall of the accommodating groove, and the first rack is in contact with the rotating plate;

[0016] The first gear is rotatably connected to the inner wall of the receiving groove, the second rack is slidably connected to the inner wall of the receiving groove, and the first rack and the second rack are both meshed with the first gear;

[0017] A push bar is also slidably connected in the accommodating groove, and a slope is arranged on the push bar. The slope of the push bar is inclined downward from an end away from the first gear to an end close to the first gear; a slope is arranged on the second rack, and the slope of the push bar can fit with the slope of the second rack.

[0018] By adopting the above technical solution, in order to drive the rotating plate to rotate, the push bar is moved first. Under the action of the inclined surface of the push bar and the second rack, the push bar can push the second rack to move. The movement of the second rack drives the first gear to rotate. The rotation of the first gear drives the first rack to move. The movement of the first rack drives the rotating plate to rotate, thereby achieving the purpose of driving the rotating plate to rotate.

[0019] Preferably, the pushing mechanism comprises a pushing plate, a pushing rod and a cam, the pushing plate is slidably connected to the inner wall of the water storage box, and a water hole is provided on the pushing plate;

[0020] The push rod is fixedly connected to the push plate, the cam is rotatably connected to the water storage box, and the cam can fit with the push rod;

[0021] A water inlet and a water outlet are provided in the water storage box, and both the water inlet and the water outlet are connected to the heating pipe;

[0022] The water storage box is provided with a second driving assembly for driving the cam to rotate.

[0023] By adopting the above technical solution, in order to transport the hot water in the water storage box to the heating pipe, the second driving component is first used to drive the cam to rotate, and the rotation of the cam drives the push rod to move back and forth, and the movement of the push rod drives the push plate to move; when the push plate moves in the direction away from the cam, it can transport the hot water in the water storage box to the heating pipe through the water outlet, and the hot water in the heating pipe moves along the heating pipe and then flows back to the water storage box from the water inlet; when the push plate moves in the direction close to the cam, the hot water in the water storage box can move to the top of the push plate through the water hole, so that the push plate can push the hot water into the heating pipe again.

[0024] Preferably, the second driving assembly comprises a fan and a driving bevel gear, the fan is rotatably connected in the venturi nozzle, and the driving bevel gear is fixedly connected to the fan;

[0025] The water storage box is rotatably connected to a first rotating rod, one end of the first rotating rod is fixedly connected to a first driven bevel gear, and the first driven bevel gear is meshed with the driving bevel gear;

[0026] The other end of the first rotating rod is fixedly connected to a second driven bevel gear, the cam is fixedly connected to a third driven bevel gear, and the second driven bevel gear is meshed with the third driven bevel gear.

[0027] By adopting the above technical solution, in order to drive the cam to rotate, when the airflow flows from the Venturi nozzle to the receiver nozzle, the airflow drives the fan to rotate, the fan rotation drives the active bevel gear to rotate, the active bevel gear rotation drives the first driven bevel gear to rotate, the first driven bevel gear rotation drives the first rotating rod to rotate, the first rotating rod rotation drives the second driven bevel gear to rotate, the second driven bevel gear rotation drives the third driven bevel gear to rotate, the third driven bevel gear rotation drives the cam to rotate, thereby achieving the purpose of driving the cam to rotate.

[0028] Preferably, a shielding plate is hinged on the pushing plate, a second torsion spring is fixedly connected to the shielding plate, the second torsion spring is fixedly connected to the pushing plate, and the shielding plate can shield the water hole.

[0029] By adopting the above technical solution, under normal conditions, the size of the water hole is relatively small relative to the pushing plate, and under the elastic force of the second torsion spring, the baffle plate can block the water hole; when the pushing plate moves in a direction away from the cam, the baffle plate blocks the water hole, thereby facilitating the pushing plate to push the hot water in the water storage box into the heating tube; when the pushing plate moves in a direction close to the cam, the water flow can push the baffle plate to rotate through the water hole, thereby allowing the hot water below the pushing plate to enter above the pushing plate, making it easier to push the hot water into the heating tube next time.

[0030] Preferably, a check plate is hinged inside the heating tube, a third torsion spring is fixedly connected to the check plate, and the third torsion spring is fixedly connected to the heating tube;

[0031] A limiting plate is fixedly connected to the heating tube, and the check plate can fit with the limiting plate.

[0032] By adopting the above technical solution, under normal conditions, under the action of the third torsion spring, the check plate can fit together with the limit plate, thereby reducing the possibility of hot water entering the water storage box from the heating tube through the water outlet; when hot water enters the heating tube, the water flow can push the check plate to rotate, thereby facilitating the water flow to enter the heating tube.

[0033] Preferably, the interface pipe is provided with a first clamping plate and a second clamping plate, the first clamping plate is hinged to the second clamping plate, and the first clamping plate and the second clamping plate can cover the portion of the heating pipe located on the interface pipe;

[0034] The first clamping plate is provided with a connecting mechanism for connecting with the second clamping plate.

[0035] By adopting the above technical solution, after the heating pipe is fixed on the interface pipe, the first clamp and the second clamp cover the heating pipe, and then the first clamp and the second clamp are connected by using a connecting mechanism, thereby reducing the possibility of heat in the hot water pipe being lost to the outside and improving the heating efficiency.

[0036] Preferably, the connection mechanism comprises a connection block and a locking assembly, the connection block is fixedly connected to the first clamping plate, a connection groove is provided on the second clamping plate, and the connection block is plugged into and matched with the connection groove;

[0037] The locking assembly is used to fix the connecting block in the connecting groove.

[0038] By adopting the above technical solution, in order to connect the first clamping plate and the second clamping plate, the connecting block is first plugged into the connecting groove, and then the connecting block is fixed in the connecting groove by using a locking assembly, so that the first clamping plate and the second clamping plate can be connected.

[0039] Preferably, the locking assembly comprises a locking block, a drawstring and a draw ring, a cavity is formed on the second clamping plate, and the locking block is slidably connected to the inner wall of the cavity;

[0040] The connecting block is provided with a locking groove, and the locking block is plugged and matched with the locking groove;

[0041] The locking block is provided with an inclined surface, and the inclined surface of the locking block is arranged to be inclined downward from an end close to the first clamping plate to an end away from the first clamping plate; the locking block is fixedly connected with a spring, and the spring is fixedly connected to the inner wall of the cavity;

[0042] One end of the pull rope is fixedly connected to the locking block, and the other end of the pull rope is fixedly connected to the pull ring.

[0043] By adopting the above technical solution, in order to fix the connecting block in the connecting groove, during the process of the connecting block entering the connecting groove, the connecting block can contact the locking block, and under the action of the inclined surface of the locking block, the connecting block can push the locking block to move, and the spring is compressed at this time; when the connecting block moves to the point where the locking block is facing the locking groove, under the action of the elastic force of the spring, the locking block and the locking groove are plugged and matched, thereby fixing the connecting block in the connecting groove; when it is necessary to disassemble and replace the first splint and the second splint, first move the pull ring, and the movement of the pull ring drives the movement of the pull rope, and the movement of the pull rope drives the movement of the locking block, thereby enabling the locking block to be disengaged from the locking groove, and then facilitating the disassembly and replacement of the first splint and the second splint.

[0044] In summary, the present application includes at least one of the following beneficial technical effects:

[0045] 1. In order to improve the effect of vacuum extraction, firstly, the heating tube is fixed on the interface tube by a fixing mechanism, and then a certain amount of hot water is injected into the water storage box, and then the vacuum generator is started. While the airflow moves from the venturi nozzle to the receiver nozzle, the hot water in the water storage box is transported to the heating tube by a pushing mechanism. Under the action of the hot water in the heating tube, the interface tube can be heated, and the gas at the interface tube expands due to the heat, which can accelerate the gas flow at the interface tube, thereby improving the effect of vacuum extraction;

[0046] 2. In order to transport the hot water in the water storage box to the heating pipe, the second driving assembly is first used to drive the cam to rotate, and the rotation of the cam drives the push rod to move back and forth, and the movement of the push rod drives the push plate to move; when the push plate moves in a direction away from the cam, the hot water in the water storage box can be transported to the heating pipe through the water outlet, and the hot water in the heating pipe moves along the heating pipe and flows back to the water storage box from the water inlet; when the push plate moves in a direction close to the cam, the hot water in the water storage box can move to the top of the push plate through the water hole, so that the push plate can push the hot water into the heating pipe again;

[0047] 3. Under normal conditions, the size of the water hole is relatively small relative to that of the push plate. Under the elastic force of the second torsion spring, the baffle plate can block the water hole; when the push plate moves in the direction away from the cam, the baffle plate blocks the water hole, thereby facilitating the push plate to push the hot water in the water storage box into the heating tube; when the push plate moves in the direction close to the cam, the water flow can push the baffle plate to rotate through the water hole, thereby allowing the hot water below the push plate to enter above the push plate, making it easier to push the hot water into the heating tube next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0049] Figure 2 It is a cross-sectional view of the mouthpiece in the embodiment of the present application.

[0050] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0051] Figure 4 It is a cross-sectional view of the water storage box in the embodiment of the present application.

[0052] Figure 5 It is a cross-sectional view of the heating tube in the embodiment of the present application.

[0053] Figure 6 It is a cross-sectional view of the push plate in the embodiment of the present application.

[0054] Figure 7It is a cross-sectional view of the first splint and the second splint in the embodiment of the present application.

[0055] Figure 8 yes Figure 7 Enlarged view of point B in the middle.

[0056] Description of reference numerals:

[0057] 1. Venturi nozzle; 11. Connecting rod; 2. Receiver nozzle; 3. Interface tube; 31. Receiving groove; 32. First clamping plate; 33. Second clamping plate; 331. Connecting groove; 332. Cavity; 4. Heating tube; 41. Square tube; 42. Check plate; 43. Third torsion spring; 44. Limiting plate; 45. Heating wire; 5. Water storage box; 51. Support plate; 52. Leak-proof ring; 53. Water outlet; 54. Water inlet; 55. Loading plate; 56. First rotating rod; 57. First driven bevel gear; 58. Second driven bevel gear; 6. Fixing mechanism; 61. Arc sheet; 62. Rotating plate; 6 3. first torsion spring; 7. first driving assembly; 71. first rack; 72. second rack; 73. first gear; 74. pushing bar; 8. pushing mechanism; 81. pushing plate; 811. water hole; 812. shielding plate; 813. second torsion spring; 82. pushing rod; 83. cam; 84. rotating shaft; 841. third driven bevel gear; 85. second driving assembly; 851. fan; 852. driving bevel gear; 9. connecting mechanism; 91. connecting block; 911. locking groove; 92. locking assembly; 921. locking block; 922. pull rope; 923. pull ring; 924. spring. DETAILED DESCRIPTION

[0058] The following is combined with Figure 1-8 This application is described in further detail.

[0059] The embodiment of the present application discloses a vacuum generator. Figure 1 The vacuum generator includes a venturi nozzle 1, a receiver nozzle 2, an interface pipe 3 and a heating pipe 4. The venturi nozzle 1, the receiver nozzle 2 and the interface pipe 3 are connected in a T shape. The venturi nozzle 1 is connected to the receiver nozzle 2. The venturi nozzle 1 and the receiver nozzle 2 are both connected to the interface pipe 3.

[0060] The heating tube 4 is wound around the interface tube 3, and a connecting rod 11 is fixedly connected to the venturi nozzle 1. A water storage box 5 is fixedly installed on the connecting rod 11. A certain amount of hot water is placed in the water storage box 5. Both ends of the heating tube 4 are connected to the water storage box 5.

[0061] like Figure 1 , Figure 2 as well as Figure 3As shown, a fixing mechanism 6 is provided on the interface tube 3, and the fixing mechanism 6 includes an arc-shaped piece 61 and a rotating plate 62. The arc-shaped piece 61 and the rotating plate 62 are integrally formed, and the arc-shaped piece 61 can fit with the heating tube 4; a receiving groove 31 is opened on the surface of the interface tube 3, and the rotating plate 62 is hinged to the inner wall of the receiving groove 31. A first torsion spring 63 is fixedly connected to the rotating plate 62, and the first torsion spring 63 is fixedly connected to the side wall of the receiving groove 31.

[0062] like Figure 2 and Figure 3 As shown, a first driving assembly 7 is disposed in the mouthpiece 3, and the first driving assembly 7 includes a first rack 71, a second rack 72 and a first gear 73. The first rack 71 and the second rack 72 are both slidably connected to the inner wall of the receiving groove 31, and the top end of the first rack 71 can fit with an end of the rotating plate 62 away from the arc-shaped piece 61;

[0063] The first gear 73 is rotatably connected to the inner wall of the receiving groove 31, and the first rack 71 and the second rack 72 are both meshed with the first gear 73;

[0064] A push bar 74 is also slidably connected in the accommodating groove 31, a part of which is located outside the interface tube 3, and an inclined surface is provided on the push bar 74, which is inclined downward from an end away from the first gear 73 to an end close to the first gear 73; an inclined surface is provided at the top of the second rack 72, and the inclined surface of the second rack 72 can fit with the inclined surface of the push bar 74.

[0065] Under the action of the first torsion spring 63, the arc piece 61 is in contact with the heating tube 4, so that the heating tube 4 can be fixed on the interface tube 3; when the heating tube 4 needs to be disassembled and replaced, the pushing bar 74 is first moved. Under the action of the inclined surfaces of the pushing bar 74 and the second rack 72, the pushing bar 74 can push the second rack 72 to move, and the second rack 72 moves to drive the first gear 73 to rotate, and the first gear 73 rotates to drive the first rack 71 to move, and the first rack 71 moves to drive the rotating plate 62 to rotate, and the rotating plate 62 rotates to drive the arc piece 61 to rotate, so that the arc piece 61 and the heating tube 4 are no longer in contact, so that the heating tube 4 can be easily disassembled and replaced.

[0066] like Figure 1 and Figure 4 As shown, a pushing mechanism 8 is provided in the water storage box 5, and the pushing mechanism 8 includes a pushing plate 81, a pushing rod 82 and a cam 83. The pushing plate 81 is slidably connected to the inner wall of the water storage box 5, and four water holes 811 are opened on the pushing plate 81;

[0067] Two support plates 51 are fixedly connected to the water storage box 5, and a rotating shaft 84 is rotatably connected between the two support plates 51, and the rotating shaft 84 is fixedly connected to the cam 83; the top end of the push rod 82 is fixedly connected to the bottom end of the push plate 81, the push rod 82 penetrates the water storage box 5, and the bottom end of the push rod 82 can fit with the cam 83; a leak-proof ring 52 is provided at the bottom of the water storage box 5, and the push rod 82 is slidably connected to the leak-proof ring 52. By utilizing the function of the leak-proof ring 52, the possibility of hot water leaking from the water storage box 5 can be reduced.

[0068] like Figure 4 and Figure 5 As shown, a water outlet 53 is provided at the top of the water storage box 5, a square tube 41 is fixedly provided on the heating tube 4, the heating tube 4 and the square tube 41 are integrally formed, and the square tube 41 is connected to the water outlet 53; a check plate 42 is hinged in the square tube 41, a third torsion spring 43 is fixedly connected to the check plate 42, and the third torsion spring 43 is fixedly connected to the square tube 41; a limit plate 44 is fixedly connected in the square tube 41, and the check plate 42 can fit with the limit plate 44;

[0069] A water inlet 54 is provided at the bottom of the water storage box 5 , and the water inlet 54 is connected to the heating tube 4 . An electric heating wire 45 is fixedly mounted at one end of the heating tube 4 close to the water inlet 54 .

[0070] like Figure 4 and Figure 6 As shown, four shielding plates 812 are hinged on the pushing plate 81, and the four shielding plates 812 are arranged in a one-to-one correspondence with the four water holes 811, and the shielding plates 812 can shield the water holes 811; a second torsion spring 813 is fixedly connected to the shielding plate 812, and the second torsion spring 813 is fixedly connected to the pushing plate 81; it should be noted that the size of the shielding plate 812 is relatively small relative to the pushing plate 81.

[0071] The cam 83 rotates to push the push rod 82 to move up and down, and the movement of the push rod 82 drives the push plate 81 to move up and down;

[0072] During the upward movement of the push plate 81, the shielding plate 812 shields the water hole 811 by the action of the second torsion spring 813, so that the push plate 81 can push the hot water in the water storage box 5 into the square tube 41. At this time, the water flow hits the check plate 42 to make the water flow into the heating tube 4. The water flow flows through the heating tube 4 and enters the water storage box 5 again from the water inlet 54. Under the heating action of the electric heating wire 45, the water flow can be repeatedly heated.

[0073] When the push plate 81 moves downward, the check plate 42 fits with the limit plate 44 under the action of the third torsion spring 43, thereby reducing the possibility of hot water in the heating tube 4 entering the water storage box 5 through the water outlet 53;

[0074] At the same time, the water flow in the water storage box 5 can push the baffle plate 812 to rotate, so that the water flow at the bottom of the water storage box 5 can enter the top of the push plate 81 through the water hole 811, which is convenient for pushing the water flow into the heating tube 4 next time.

[0075] like Figure 1 and Figure 4 As shown, a second driving assembly 85 is provided on the water storage box 5, and the second driving assembly 85 includes a fan 851 and a driving bevel gear 852. The fan 851 is rotatably installed in the venturi nozzle 1, and the driving bevel gear 852 is fixedly connected to the fan 851;

[0076] The water storage box 5 is fixedly connected with a bearing plate 55, and the bearing plate 55 is rotatably connected with a first rotating rod 56. One end of the first rotating rod 56 is fixedly connected with a first driven bevel gear 57, and the first driven bevel gear 57 is meshed with the driving bevel gear 852;

[0077] The other end of the first rotating rod 56 is fixedly connected to the second driven bevel gear 58 . The rotating shaft 84 is fixedly connected to the third driven bevel gear 841 . The second driven bevel gear 58 is meshed with the third driven bevel gear 841 .

[0078] When the airflow flows from the Venturi nozzle 1 to the receiver nozzle 2, the airflow drives the fan 851 to rotate, the rotation of the fan 851 drives the driving bevel gear 852 to rotate, the driving bevel gear 852 drives the first driven bevel gear 57 to rotate, the first driven bevel gear 57 drives the first rotating rod 56 to rotate, the first rotating rod 56 drives the second driven bevel gear 58 to rotate, the second driven bevel gear 58 drives the third driven bevel gear 841 to rotate, the third driven bevel gear 841 drives the cam 83 to rotate, thereby achieving the purpose of driving the cam 83 to rotate.

[0079] like Figure 1 , Figure 7 as well as Figure 8 As shown, the interface pipe 3 is provided with a first clamping plate 32 and a second clamping plate 33, the first clamping plate 32 and the second clamping plate 33 are hinged, and the first clamping plate 32 and the second clamping plate 33 can be spliced ​​to block the portion of the heating pipe 4 located on the interface pipe 3, thereby reducing the possibility of heat loss of the hot water in the heating pipe 4.

[0080] like Figure 7 and Figure 8 As shown, a connecting mechanism 9 is provided on the first clamping plate 32, and the connecting mechanism 9 includes a connecting block 91 and a locking assembly 92, the connecting block 91 is fixedly connected to the first clamping plate 32, and a connecting groove 331 is provided on the second clamping plate 33, and the connecting block 91 is plugged and matched with the connecting groove 331;

[0081] The locking assembly 92 includes a locking block 921, a pull rope 922 and a pull ring 923. A cavity 332 is provided on the second clamping plate 33. The locking block 921 is slidably connected to the inner wall of the cavity 332. A locking groove 911 is provided on the connecting block 91. The locking block 921 is plugged into the locking groove 911. An inclined surface is provided on the locking block 921. The inclined surface of the locking block 921 is inclined downward from one end close to the first clamping plate 32 to one end away from the first clamping plate 32. A spring 924 is fixedly connected to the locking block 921. The spring 924 is fixedly connected to the side wall of the cavity 332.

[0082] One end of the pull rope 922 is fixedly connected to the locking block 921 , and the other end of the pull rope 922 is fixedly connected to the pull ring 923 , which is located outside the second clamping plate 33 .

[0083] When the connecting block 91 enters the connecting groove 331, the connecting block 91 can contact the locking block 921. Under the action of the inclined surface of the locking block 921, the connecting block 91 can push the locking block 921 to move, and the spring 924 is compressed. When the connecting block 91 moves to the point where the locking block 921 faces the locking groove 911, under the elastic force of the spring 924, the locking block 921 is plugged into and matched with the locking groove 911, so that the connecting block 91 can be fixed in the connecting groove 331.

[0084] When the first clamp plate 32 and the second clamp plate 33 need to be disassembled and replaced, the pull ring 923 is moved first. The movement of the pull ring 923 drives the pull rope 922 to move. The movement of the pull rope 922 drives the locking block 921 to move, so that the locking block 921 can be disengaged from the locking groove 911, thereby facilitating the disassembly and replacement of the first clamp plate 32 and the second clamp plate 33.

[0085] The implementation principle of the vacuum generator of the embodiment of the present application is as follows: when the airflow flows from the Venturi nozzle 1 to the receiver nozzle 2, the second driving assembly 85 is used to drive the cam 83 to rotate, thereby driving the push plate 81 to move up and down, so that the hot water in the water storage box 5 can enter the heating tube 4, heating the interface tube 3. The gas at the interface tube 3 expands due to the heat, which can accelerate the gas flow at the interface tube 3, thereby improving the effect of extracting the vacuum; the first clamping plate 32 and the second clamping plate 33 are used to reduce the possibility of heat loss in the heating tube 4.

[0086] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vacuum generator, characterized in that: It comprises a venturi nozzle (1), a receiver nozzle (2), an interface pipe (3) and a heating pipe (4), wherein the venturi nozzle (1) is connected to the receiver nozzle (2), and the venturi nozzle (1) and the receiver nozzle (2) are both connected to the interface pipe (3); The heating tube (4) is wound around the mouthpiece (3), and the mouthpiece (3) is provided with a fixing mechanism (6) for fixing the heating tube (4); A water storage box (5) is fixedly mounted on the Venturi nozzle (1), a certain amount of hot water is placed in the water storage box (5), and a pushing mechanism (8) for transporting the hot water to the heating tube (4) is arranged in the water storage box (5); the fixing mechanism (6) comprises an arc-shaped sheet (61) and a rotating plate (62), the arc-shaped sheet (61) is fixedly connected to the rotating plate (62), and the arc-shaped sheet (61) can fit the heating tube (4); The mouthpiece (3) is provided with a receiving groove (31), the rotating plate (62) is hinged to the inner wall of the receiving groove (31), the rotating plate (62) is fixedly connected to a first torsion spring (63), and the first torsion spring (63) is fixedly connected to the side wall of the receiving groove (31); A first driving assembly (7) for driving the rotating plate (62) to rotate is arranged in the mouthpiece (3); the first driving assembly (7) comprises a first rack (71), a second rack (72) and a first gear (73); the first rack (71) is slidably connected to the inner wall of the accommodating groove (31); the first rack (71) is in contact with the rotating plate (62); The first gear (73) is rotatably connected to the inner wall of the receiving groove (31), the second rack (72) is slidably connected to the inner wall of the receiving groove (31), and the first rack (71) and the second rack (72) are both meshed with the first gear (73); A push bar (74) is also slidably connected in the receiving groove (31), and an inclined surface is provided on the push bar (74), and the inclined surface of the push bar (74) is inclined downward from an end away from the first gear (73) to an end close to the first gear (73); an inclined surface is provided on the second rack (72), and the inclined surface of the push bar (74) can fit with the inclined surface of the second rack (72); the pushing mechanism (8) comprises a pushing plate (81), a pushing rod (82) and a cam (83), and the pushing plate (81) is slidably connected to the inner wall of the water storage box (5), and a water through hole (811) is provided on the pushing plate (81); The push rod (82) is fixedly connected to the push plate (81), the cam (83) is rotatably connected to the water storage box (5), and the cam (83) can fit with the push rod (82); The water storage box (5) is provided with a water inlet (54) and a water outlet (53), and the water inlet (54) and the water outlet (53) are both connected to the heating pipe (4); The water storage box (5) is provided with a second driving assembly (85) for driving the cam (83) to rotate; the second driving assembly (85) comprises a fan (851) and an active bevel gear (852); the fan (851) is rotatably connected to the Venturi nozzle (1), and the active bevel gear (852) is fixedly connected to the fan (851); The water storage box (5) is rotatably connected to a first rotating rod (56), one end of the first rotating rod (56) is fixedly connected to a first driven bevel gear (57), and the first driven bevel gear (57) is meshed with the driving bevel gear (852); The other end of the first rotating rod (56) is fixedly connected to a second driven bevel gear (58), the cam (83) is fixedly connected to a third driven bevel gear (841), and the second driven bevel gear (58) is meshed with the third driven bevel gear (841).

2. The vacuum generator according to claim 1, characterized in that: A shielding plate (812) is hingedly connected to the push plate (81), a second torsion spring (813) is fixedly connected to the shielding plate (812), the second torsion spring (813) is fixedly connected to the push plate (81), and the shielding plate (812) can shield the water through hole (811).

3. The vacuum generator according to claim 1, characterized in that: A check plate (42) is hingedly connected inside the heating tube (4), a third torsion spring (43) is fixedly connected to the check plate (42), and the third torsion spring (43) is fixedly connected to the heating tube (4); The heating tube (4) is fixedly connected to a limiting plate (44), and the non-return plate (42) can fit the limiting plate (44).

4. The vacuum generator according to claim 1, characterized in that: The mouthpiece (3) is provided with a first clamping plate (32) and a second clamping plate (33), the first clamping plate (32) and the second clamping plate (33) are hingedly connected, and the first clamping plate (32) and the second clamping plate (33) are capable of shielding the portion of the heating tube (4) located on the mouthpiece (3); The first clamping plate (32) is provided with a connecting mechanism (9) for connecting with the second clamping plate (33).

5. The vacuum generator according to claim 4, characterized in that: The connecting mechanism (9) comprises a connecting block (91) and a locking assembly (92); the connecting block (91) is fixedly connected to the first clamping plate (32); a connecting groove (331) is provided on the second clamping plate (33); the connecting block (91) is plugged into and matched with the connecting groove (331); The locking assembly (92) is used to fix the connecting block (91) in the connecting groove (331).

6. The vacuum generator according to claim 5, characterized in that: The locking assembly (92) comprises a locking block (921), a pull rope (922) and a pull ring (923); a cavity (332) is provided on the second clamping plate (33); the locking block (921) is slidably connected to the inner wall of the cavity (332); The connection block (91) is provided with a locking groove (911), and the locking block (921) is plugged into and matched with the locking groove (911); The locking block (921) is provided with an inclined surface, and the inclined surface of the locking block (921) is arranged to be inclined downward from an end close to the first clamping plate (32) to an end away from the first clamping plate (32); a spring (924) is fixedly connected to the locking block (921), and the spring (924) is fixedly connected to the inner wall of the cavity (332); One end of the pull rope (922) is fixedly connected to the locking block (921), and the other end of the pull rope (922) is fixedly connected to the pull ring (923).

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