Multi-stage vacuum generator

Abstract

The utility model relates to a multistage vacuum generator which comprises a protection box and a vacuum generator body, the vacuum generator body is installed in the protection box, ventilation openings are formed in the two sides of the protection box, an installation frame is installed on the ventilation openings, and a heat dissipation assembly is arranged in the installation frame. The heat dissipation assembly comprises heat dissipation holes used for keeping air circulation and a control part used for controlling the heat dissipation holes to be opened and closed, by rotating a rotating disc, the rotating disc drives a threaded rod in the mounting frame to rotate, the threaded rod rotates to drive a moving block to move, then the moving block drives a sealing plate to move, and therefore the heat dissipation holes are opened and closed; according to the vacuum generator, air circulation is guaranteed when the vacuum generator body runs, the situation that the vacuum generator body is influenced by too high temperature in the protection box is prevented, and dust in the air is prevented from entering and influencing the service life of equipment by closing the heat dissipation holes when the vacuum generator body is not used.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum generators, in particular to a multi-stage vacuum generator. Background Art

[0002] A vacuum generator is a vacuum component that uses a positive pressure gas source to generate negative pressure. It makes it very easy and convenient to obtain negative pressure in places where compressed air is available, or in places where positive and negative pressures are required at the same time in a pneumatic system. Vacuum generators are widely used in industrial automation in the fields of machinery, electronics, packaging, printing, plastics and robots. The traditional use of vacuum generators is to cooperate with suction cups to adsorb and transport various materials. It is especially suitable for adsorbing fragile, soft, thin non-ferrous, non-metallic materials or spherical objects. In such applications, a common feature is that the required air extraction volume is small, the vacuum degree requirement is not high, and the work is intermittent.

[0003] A Chinese patent (publication number CN214367468U) discloses a multi-stage vacuum generator, including a vacuum generator body and a protective assembly. The vacuum generator body is fixed inside a shell, and is buffered by a first spring and a second spring for up and down movement. At the same time, a third spring, a connecting rod and a sliding rod are used for left and right and up and down buffering to prevent the vacuum generator from being damaged by collision. The device is buffered by a connecting rod, a sliding rod and a spring, so that the vacuum generator is not easily damaged and has strong anti-collision performance.

[0004] When the above-mentioned vacuum generator is in use, due to the working principle of the multi-stage vacuum generator, it will generate a certain amount of heat during operation. The above-mentioned vacuum generator fixes the vacuum generator body inside the shell, and the air circulation in the shell cannot be guaranteed, resulting in the heat generated by the equipment cannot be discharged in time, thereby affecting the service life of the equipment, and even causing safety hazards in serious cases. Utility Model Content

[0005] In view of the above problems, a multi-stage vacuum generator is provided, which solves the technical problem that the heat generated in the box cannot be discharged in time, thereby affecting the service life of the equipment, by controlling the opening and closing of the heat dissipation holes.

[0006] In order to solve the problems of the prior art, the utility model provides a multi-stage vacuum generator, comprising a protective box and a vacuum generator body, wherein the vacuum generator body is installed in the protective box, vents are arranged on both sides of the protective box, a mounting frame is installed on the vents, a heat dissipation component is arranged in the mounting frame, the heat dissipation component comprises heat dissipation holes for maintaining air circulation and a control component for controlling the opening and closing of the heat dissipation holes, and a buffer component for protecting the vacuum generator body from collision is arranged below the vacuum generator body.

[0007] Preferably, the control component includes a threaded rod, a turntable, a moving block and a sealing plate; the threaded rod is vertically installed in the installation frame; the turntable is installed at one end of the threaded rod; the moving block is threadedly connected to the outer surface of the threaded rod; and the sealing plate is installed on one side of the moving block.

[0008] Preferably, limit rings are installed on both upper and lower sides of the outer surface of the threaded rod located on the moving block.

[0009] Preferably, first sliding rods are vertically installed on both sides of the threaded rod in the installation frame, a slider is slidably connected to the outer surface of the first sliding rod, and one end of the slider is fixedly connected to the sealing plate.

[0010] Preferably, the buffer assembly includes a placement plate and a telescopic column; the placement plate is installed below the vacuum generator body, and the placement plate is slidably connected to the side wall of the protection box; the telescopic column is installed below the placement plate.

[0011] Preferably, a second sliding rod is installed between the telescopic columns, the outer surface of the second sliding rod is slidably connected to a moving seat, a connecting plate is hinged on the top of the moving seat, a fixed seat is installed on the inner side of the two groups of telescopic columns below the placement plate, the other end of the connecting plate is hinged to the fixed seat, and a first spring that abuts against the moving seat is sleeved on the second sliding rod.

[0012] Preferably, a sliding block is installed below the movable seat, and a limiting sliding groove for the sliding block to slide is provided at the bottom of the protective box.

[0013] Preferably, a buffer box is installed on the top of the protection box, a limit plate is slidably connected to the buffer box, a second spring is installed above the limit plate, a connecting rod is installed below the limit plate, and a buffer plate is installed on the other end of the connecting rod.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The opening and closing of the heat dissipation holes can be controlled to ensure the air circulation when the vacuum generator is in operation, preventing the excessive temperature in the protective box from affecting the vacuum generator. When the vacuum generator is not in use, the heat dissipation holes can be closed to prevent dust from entering the air and affecting the service life of the equipment.

[0016] 2. The impact energy is absorbed by the buffer component to reduce the damage to the vacuum generator body, thereby providing all-round buffer protection for the vacuum generator body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of a multi-stage vacuum generator in a first viewing angle.

[0018] Figure 2 It is a three-dimensional diagram of a mounting frame in a multi-stage vacuum generator.

[0019] Figure 3 It is a cross-sectional view of a multi-stage vacuum generator from a side view.

[0020] Figure 4 It is a multi-stage vacuum generator. Figure 3 Enlarged view of point A in the middle.

[0021] Figure 5 It is a stereoscopic diagram of a placement plate, a telescopic column and a second slide bar in a multi-stage vacuum generator.

[0022] The numbers in the figure are: 1. protective box; 2. vacuum generator body; 3. mounting frame; 4. heat dissipation assembly; 41. heat dissipation hole; 42. threaded rod; 43. turntable; 44. moving block; 45. sealing plate; 46. limiting ring; 47. first slide bar; 48. slider; 5. buffer assembly; 51. placement plate; 52. telescopic column; 53. second slide bar; 54. first spring; 55. moving seat; 56. connecting plate; 57. fixed seat; 58. buffer box; 59. second spring; 510. limiting plate; 511. connecting rod; 512. buffer plate; 513. sliding block. DETAILED DESCRIPTION

[0023] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] See also Figures 1 to 5 As shown, the utility model provides a multi-stage vacuum generator, including a protective box 1 and a vacuum generator body 2, the vacuum generator body 2 is installed in the protective box 1, ventilation holes are arranged on both sides of the protective box 1, a mounting frame 3 is installed on the ventilation holes, a heat dissipation component 4 is arranged in the mounting frame 3, the heat dissipation component 4 includes a heat dissipation hole 41 for maintaining air circulation and a control component for controlling the opening and closing of the heat dissipation hole 41, and a buffer component 5 is arranged below the vacuum generator body 2 for protecting the vacuum generator body 2 from collision.

[0025] The heat dissipation holes 41 are opened and closed by the control component, thereby ensuring the circulation of air when the vacuum generator body 2 is in operation, and absorbing the impact energy through the buffer assembly 5 to reduce the damage to the vacuum generator body 2.

[0026] See also Figure 1 to Figure 2As shown, the control component includes a threaded rod 42, a turntable 43, a moving block 44 and a sealing plate 45; the threaded rod 42 is vertically installed in the installation frame 3; the turntable 43 is installed at one end of the threaded rod 42; the moving block 44 is threadedly connected to the outer surface of the threaded rod 42; and the sealing plate 45 is installed on one side of the moving block 44.

[0027] By rotating the turntable 43, the turntable 43 drives the threaded rod 42 in the installation frame 3 to rotate, the rotation of the threaded rod 42 drives the moving block 44 to move, and then the moving block 44 drives the sealing plate 45 to move, thereby opening and closing the heat dissipation hole 41.

[0028] See also Figure 2 As shown, the outer surface of the threaded rod 42 is provided with limit rings 46 on both the upper and lower sides of the moving block 44 .

[0029] When the moving block 44 is driven to move by the threaded rod 42, the moving range of the moving block 44 is limited by the limit rings 46 located on the upper and lower sides of the moving block 44 on the threaded rod 42 to prevent it from exceeding the preset position, thereby ensuring the safety and reliability of the entire control component.

[0030] As shown in FIG. 2 , first sliding rods 47 are vertically installed on both sides of the threaded rod 42 in the installation frame 3 , and a slider 48 is slidably connected to the outer surface of the first sliding rod 47 , and one end of the slider 48 is fixedly connected to the sealing plate 45 .

[0031] When the sealing plate 45 is moved by the moving block 44, the sliders 48 on both sides of the sealing plate 45 slide on the first slide rod 47, so that the sealing plate 45 moves more smoothly and stably, reducing friction and resistance, and improving the response speed and operation efficiency of the entire control component.

[0032] See also Figures 3 to 5 As shown, the buffer assembly 5 includes a placement plate 51 and a telescopic column 52; the placement plate 51 is installed below the vacuum generator body 2, and the placement plate 51 is slidably connected to the side wall of the protection box 1; the telescopic column 52 is installed below the placement plate 51.

[0033] The placement plate 51 is driven by the telescopic column 52 to move up and down for buffering, thereby preventing the vacuum generator body 2 from being damaged by collision.

[0034] See also Figure 3 and Figure 4 As shown, a second slide bar 53 is installed between the telescopic columns 52, and a moving seat 55 is slidably connected to the outer surface of the second slide bar 53. A connecting plate 56 is hinged on the top of the moving seat 55. A fixed seat 57 is installed on the inner side of the two groups of telescopic columns 52 below the placement plate 51. The other end of the connecting plate 56 is hinged to the fixed seat 57. A first spring 54 that abuts against the moving seat 55 is sleeved on the second slide bar 53.

[0035] When the placement plate 51 is driven to move up and down for buffering by the telescopic column 52, the placement plate 51 drives the fixed seat 57 to move, and then the fixed seat 57 drives the moving seat 55 to slide on the second slide bar 53 through the hinged connecting plate 56, and squeezes the first spring 54 sleeved on the second slide bar 53, so that the placement plate 51 can fully absorb the impact energy and reduce the damage to the vacuum generator body 2.

[0036] See also Figure 3 and Figure 4 As shown, a sliding block 513 is installed below the moving seat 55, and a limiting sliding groove for the sliding block 513 to slide is provided at the bottom of the protective box 1.

[0037] When the movable seat 55 moves, it will slide on the limiting slide groove through the sliding block 513 below, thereby ensuring that the movable seat 55 can slide smoothly when impacted and limiting its movement range, thereby further enhancing the buffering effect.

[0038] See also Figure 3 and Figure 5 As shown, a buffer box 58 is installed on the top of the protective box 1, and a limit plate 510 is slidably connected inside the buffer box 58. A second spring 59 is installed above the limit plate 510, and a connecting rod 511 is installed below the limit plate 510. A buffer plate 512 is installed on the other end of the connecting rod 511.

[0039] When the top of the protection box 1 is impacted, the buffer plate 512 moves, and the buffer plate 512 drives the connecting rod 511 to move in the buffer box 58, and squeezes the second spring 59 in the buffer box 58, thereby absorbing the impact force and reducing the damage to the vacuum generator body 2, thereby achieving all-round buffering protection for the vacuum generator body 2, making the vacuum generator less likely to be damaged and extending its service life.

[0040] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. A multi-stage vacuum generator, characterized in that: The invention comprises a protective box (1) and a vacuum generator body (2), wherein the vacuum generator body (2) is installed in the protective box (1), ventilation holes are arranged on both sides of the protective box (1), a mounting frame (3) is installed on the ventilation holes, a heat dissipation component (4) is arranged in the mounting frame (3), the heat dissipation component (4) comprises a heat dissipation hole (41) for maintaining air circulation and a control component for controlling the opening and closing of the heat dissipation hole (41), and a buffer component (5) for protecting the vacuum generator body (2) from collision is arranged below the vacuum generator body (2).

2. A multi-stage vacuum generator according to claim 1, characterized in that: The control component comprises a threaded rod (42), a rotating disk (43), a moving block (44) and a sealing plate (45); The threaded rod (42) is vertically installed in the installation frame (3); The rotating disk (43) is mounted on one end of the threaded rod (42); The moving block (44) is threadedly connected to the outer surface of the threaded rod (42); The sealing plate (45) is installed on one side of the moving block (44).

3. A multi-stage vacuum generator according to claim 2, characterized in that: Limiting rings (46) are installed on both upper and lower sides of the outer surface of the threaded rod (42) located on the moving block (44).

4. A multi-stage vacuum generator according to claim 1, characterized in that: A first sliding rod (47) is vertically installed on both sides of the threaded rod (42) in the installation frame (3), and a sliding block (48) is slidably connected to the outer surface of the first sliding rod (47), and one end of the sliding block (48) is fixedly connected to the sealing plate (45).

5. The multi-stage vacuum generator according to claim 1, characterized in that: The buffer assembly (5) comprises a placement plate (51) and a telescopic column (52); The placement plate (51) is installed below the vacuum generator body (2), and the placement plate (51) is slidably connected to the side wall of the protection box (1); The telescopic column (52) is installed below the placement plate (51).

6. A multi-stage vacuum generator according to claim 5, characterized in that: A second slide bar (53) is installed between the telescopic columns (52), the outer surface of the second slide bar (53) is slidably connected to a moving seat (55), a connecting plate (56) is hinged on the top of the moving seat (55), a fixed seat (57) is installed on the inner side of the two groups of telescopic columns (52) below the placement plate (51), the other end of the connecting plate (56) is hinged to the fixed seat (57), and a first spring (54) abutting against the moving seat (55) is sleeved on the second slide bar (53).

7. A multi-stage vacuum generator according to claim 6, characterized in that: A sliding block (513) is installed below the movable seat (55), and a limiting sliding groove for the sliding block (513) to slide is provided at the bottom of the protective box (1).

8. The multi-stage vacuum generator according to claim 1, characterized in that: A buffer box (58) is installed at the top of the protection box (1), and a limit plate (510) is slidably connected inside the buffer box (58). A second spring (59) is installed above the limit plate (510), and a connecting rod (511) is installed below the limit plate (510). A buffer plate (512) is installed at the other end of the connecting rod (511).

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