Vacuum pump frame

Abstract

The utility model relates to the technical field of vacuum pumps, and discloses a vacuum pump frame, which is characterized by comprising a frame and a waste oil box, first universal wheels are mounted at the bottom of the frame, roller components are connected to two opposite sides of the bottom of the frame, and the frame and the waste oil box are arranged in a split manner, so that the waste oil box can be replaced. Waste oil boxes containing waste oil can be treated in a centralized mode, and the whole frame does not need to be moved; when the waste oil box moves to the position below the frame, rolling friction is formed between the waste oil box and the rolling wheels, the rolling wheels limit the moving direction of the waste oil box and play a role in limiting the waste oil box, and the contact area between the rolling wheels and the waste oil box is small due to the arrangement of the rolling wheels. Direct contact between the waste oil box and the frame is prevented, and noise is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, and more specifically to a vacuum pump vehicle frame. Background Technology

[0002] During the use of Roots pumps, they are usually used in conjunction with a backing pump to achieve the purpose of vacuuming; the backing pump can reduce the starting pressure of the Roots pump and ensure its stable operation.

[0003] The Roots pump is installed above the pre-pump, and the exhaust port of the Roots pump is connected to the air inlet of the pre-pump. When the pre-pump is working, oil leakage will occur. Therefore, a waste oil box is installed below the pre-pump. In the existing technology, the waste oil box is fixedly connected to the frame. When disposing of waste oil, it needs to be discharged through the oil outlet on the waste oil box. This needs to be done in the working environment of the vacuum pump, which is inconvenient. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a vacuum pump vehicle frame for centralized processing of replaceable waste oil boxes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vacuum pump frame, including a frame and a waste oil box, wherein a first universal wheel is installed at the bottom of the frame, and roller assemblies are connected to opposite sides of the bottom of the frame, the roller assembly including rollers, the central axis of the rollers being vertically arranged, and a second universal wheel is installed at the bottom of the waste oil box, the rollers being in contact with the outer side of the waste oil box.

[0006] As a further improvement of this utility model, the roller assembly also includes a support rod, a through hole is provided on the frame, the support rod passes through the through hole, the roller is movably connected to the support rod, and a nut is threaded to the end of the support rod.

[0007] As a further improvement of this utility model, the support rod is provided with two rollers.

[0008] As a further improvement of this utility model, a baffle is fixedly connected to the bottom of the frame.

[0009] As a further improvement of this utility model, a rubber pad is fixedly connected to the inner side of the baffle.

[0010] As a further improvement of this utility model, the frame includes two frames, a front pump is installed between the two frames, and the waste oil box is located below the frames.

[0011] As a further improvement of this utility model, a shock absorber is connected between the forepump and the frame.

[0012] As a further improvement of this utility model, two brackets are detachably connected to the frame, the two brackets are located on opposite sides of the frame, and a control box is installed between the two brackets.

[0013] As a further improvement of this utility model, a first ring is formed on the frame, a second ring is formed on the waste oil box, and a T-shaped piece is inserted between the first ring and the second ring.

[0014] The beneficial effects of this utility model are as follows: In this utility model, the frame and the waste oil box are set separately, which allows the waste oil box to be replaced and the waste oil box containing waste oil to be disposed of in a centralized manner without moving the entire frame; when the waste oil box is moved under the frame, the waste oil box rolls and rubs against the rollers, and the rollers restrict the movement direction of the waste oil box, which plays a limiting role in the waste oil box. The design of the rollers and the waste oil box has a small contact surface, which prevents direct contact between the waste oil box and the frame and also reduces noise. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure at the bottom of the frame in this utility model;

[0016] Figure 2 This is a structural schematic diagram of the shock absorber on the vehicle frame in this utility model;

[0017] Figure 3 This is a schematic diagram of the waste oil box in this utility model;

[0018] Figure 4 This is a schematic diagram of the roller assembly in this utility model.

[0019] Reference numerals: 1. Frame; 11. First caster wheel; 12. Baffle; 13. Rubber pad; 14. Frame; 15. Vibration damping pad; 16. Bracket; 17. First ring component; 2. Waste oil box; 21. Second caster wheel; 22. Second ring component; 3. Roller assembly; 31. Roller; 32. Support rod; 33. Nut; 4. Control box; 5. Shock absorber. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] Reference Figures 1 to 4As shown, a vacuum pump frame of this embodiment includes a frame 1 and a waste oil box 2. A pre-pump and a Roots pump are installed on the frame 1. The pre-pump is located below the Roots pump. The air inlet of the pre-pump is connected to the air outlet of the Roots pump. A pipe is connected between the pre-pump and the Roots pump. A bellows is connected between the air inlet of the pre-pump and the pipe. A bellows is also connected between the air outlet of the Roots pump and the pipe.

[0022] Four casters 11 are installed at the bottom of the frame 1, located at the four corners of the bottom of the frame 1, allowing the frame 1 to move. In one embodiment, the first casters 11 and the second casters 21 are of different sizes, allowing the waste oil box 2 to move under the frame 1. In another embodiment, a pad is added between the first casters 11 and the frame 1, thereby increasing the height of the space at the bottom of the frame 1.

[0023] Roller assemblies 3 are connected to opposite sides of the bottom of the frame 1. Preferably, there are four roller assemblies 3, with two roller assemblies 3 on each opposite side of the bottom of the frame 1.

[0024] The roller assembly 3 includes a roller 31 with its central axis vertically aligned. A second omnidirectional wheel 21 is mounted on the bottom of the waste oil box 2, and the roller 31 contacts the outer side of the waste oil box 2. When the waste oil box 2 moves under the frame 1, there is rolling friction between the waste oil box 2 and the roller 31. The roller 31 restricts the direction of movement of the waste oil box 2, thus limiting its movement. The roller 31 has a small contact area with the waste oil box 2, preventing direct contact between the waste oil box 2 and the frame 1 and reducing noise.

[0025] The waste oil box 2 is set separately from the frame 1, which allows the waste oil box 2 to be replaced and the waste oil box 2 containing waste oil to be disposed of in a centralized manner without having to move the entire frame 1.

[0026] Reference Figure 4 As shown, the roller assembly 3 also includes a support rod 32. A through hole is provided on the frame 1, through which the support rod 32 passes. The roller 31 is movably connected to the support rod 32. A nut 33 is threaded to the end of the support rod 32. The head of the support rod 32 faces downward and passes upward through the through hole. The support rod 32 is suspended on the frame 1 by the connection between the nut 33 and the support rod 32.

[0027] Among them, the support rod 32 can be a bolt. The support rod 32 has external threads only at the tail end. The external threads are threaded to the nut 33. The outer diameter of the nut 33 is larger than the inner diameter of the through hole, so that the support rod 32 can be suspended on the frame 1 through the nut 33.

[0028] Preferably, the support rod 32 has two rollers 31, which can better adapt to the height of the waste oil box 2.

[0029] Reference Figure 2 As shown, a baffle 12 is fixedly connected to the bottom of the frame 1. When the waste oil box 2 moves under the frame 1, it will contact the baffle 12. The baffle 12 is located at the tail end of the bottom of the frame 1. The tail end refers to the other end of the waste oil box 2 from the bottom entrance of the frame 1. The baffle 12 limits the depth of the waste oil box 2 entering under the frame 1.

[0030] Reference Figure 1 As shown, a rubber pad 13 is fixedly connected to the inner side of the baffle 12 to prevent the baffle 12 from directly contacting the waste oil box 2. The rubber pad 13 plays a role in buffering and noise reduction.

[0031] The frame 1 includes two frames 14, with a front pump installed between the two frames 14. The waste oil box 2 is located below the frame 14. A shock absorber 5 is connected between the front pump and the frame 14. Preferably, four shock absorbers 5 are provided. The shock absorbers 5 can be spring shock absorbers 5. A shock absorber 5 is provided at both ends of a single frame 14. The four shock absorbers 5 are located at the four corners of the front pump, respectively, and play a role in shock absorption.

[0032] Two brackets 16 are detachably connected to the frame 1. The two brackets 16 are located on opposite sides of the frame 1, and a control box 4 is installed between the two brackets 16. The brackets 16 are L-shaped and are connected to the frame 1 by standard parts such as screws.

[0033] Reference Figure 1 and Figure 3 As shown, a first ring 17 is formed on the frame 1, and a second ring 22 is formed on the waste oil box 2. A T-shaped piece is inserted between the first ring 17 and the second ring 22. The first ring 17 can be connected to the frame 1 by welding; the second ring 22 can be connected to the waste oil box 2 by welding.

[0034] The first ring 17 is located above the second ring 22; the T-shaped piece passes through the first ring 17 first and then through the second ring 22, which allows the frame 1 to be connected to the waste oil box 2; when the frame 1 is pushed, the waste oil box 2 can move at the same time, which also prevents the waste oil box 2 from separating from the frame 1 or from the two having a large positional difference.

[0035] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A vacuum pump vehicle frame, characterized in that: The device includes a frame (1) and a waste oil box (2). The frame (1) is equipped with a first universal wheel (11) at the bottom. Roller assemblies (3) are connected to opposite sides of the bottom of the frame (1). The roller assembly (3) includes a roller (31) with the central axis of the roller (31) set vertically. The waste oil box (2) is equipped with a second universal wheel (21) at the bottom. The roller (31) is in contact with the outer side of the waste oil box (2).

2. The vacuum pump vehicle frame according to claim 1, characterized in that: The roller assembly (3) also includes a support rod (32), a through hole is provided on the frame (1), the support rod (32) passes through the through hole, the roller (31) is movably connected to the support rod (32), and a nut (33) is threaded to the end of the support rod (32).

3. A vacuum pump truck frame according to claim 2, characterized in that: The support rod (32) has two rollers (31).

4. A vacuum pump truck frame according to claim 1, characterized in that: A baffle (12) is fixedly connected to the bottom of the frame (1).

5. A vacuum pump truck frame according to claim 4, characterized in that: A rubber pad (13) is fixedly connected to the inner side of the baffle (12).

6. A vacuum pump truck frame according to claim 1, characterized in that: The frame (1) includes two frames (14), a front pump is installed between the two frames (14), and the waste oil box (2) is located below the frames (14).

7. A vacuum pump truck frame according to claim 6, characterized in that: A shock absorber (5) is connected between the pre-pump and the frame (14).

8. A vacuum pump vehicle frame according to claim 1, characterized in that: Two brackets (16) are detachably connected to the frame (1). The two brackets (16) are located on opposite sides of the frame (1), and a control box (4) is installed between the two brackets (16).

9. A vacuum pump vehicle frame according to claim 1, characterized in that: A first ring (17) is formed on the frame (1), and a second ring (22) is formed on the waste oil box (2). A T-shaped piece is inserted between the first ring (17) and the second ring (22).

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