Portable mobile vacuum negative pressure device

Abstract

The utility model relates to the technical field of vacuum generators, in particular to a portable mobile vacuum negative pressure device. The portable mobile vacuum negative pressure device provided by the utility model solves the technical problem of poor positioning performance of a portable vacuum generator in the prior art. A portable mobile vacuum negative pressure device comprises a base, the base is provided with a vacuum generation assembly, and the base is further provided with an inner frame; when the vacuum negative pressure device needs to be moved, the wheels on the outer frame make contact with the ground, the base does not make contact with the ground, and at the moment, the vacuum negative pressure device can be conveniently moved. When the vacuum negative pressure device moves to a target position, the outer frame moves upwards, that is, the wheels are separated from the ground, the base is in contact with the ground, at the moment, due to the fact that the base is in surface contact with the ground, the vacuum negative pressure device is stably positioned at the target position, and therefore the vacuum negative pressure device has good positioning strength, and the service life of the vacuum negative pressure device is prolonged. And the vacuum negative pressure device is not easy to misplace in the working process.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum generator technical field especially relates to a portable mobile vacuum negative pressure device. BACKGROUND

[0002] The vacuum generator is the device that utilizes vacuum pump to make the container or sealed area produce vacuum, and is widely used in the environment that needs to produce vacuum. The portable mobile vacuum negative pressure device refers to the vacuum generator that can be moved, and the portable vacuum generator usually includes the small vacuum generator that can be directly held by hand, and the large vacuum generator that can not be moved by hand and can only be moved by the wheel or other tools.

[0003] For the large vacuum generator, the wheel is arranged to facilitate the movement, and the portable purpose is realized, but when the vacuum generator is displaced to the target position, the prior art positions the vacuum generator by locking the wheel, and the wheel is in linear contact with the ground. The positioning strength of this positioning mode is low, and the vibration generated in the working process of the vacuum generator can easily cause the displacement of the vacuum generator.

[0004] Therefore, the portable vacuum generator of the prior art has the technical problem of poor positioning performance. SUMMARY

[0005] The portable mobile vacuum negative pressure device provided by the utility model solves the technical problem of poor positioning performance of the portable vacuum generator of the prior art.

[0006] Some embodiments for solving the above technical problems include:

[0007] A portable mobile vacuum negative pressure device includes a base, the base is provided with a vacuum generating assembly, and the base is further provided with an inner frame.

[0008] The inner frame is provided with an outer frame, the outer frame is provided with wheels in contact with the ground, and the outer frame is slidingly connected to the inner frame in the vertical direction.

[0009] A driving assembly is arranged between the inner frame and the outer frame to drive the outer frame to reciprocate relative to the inner frame in the vertical direction, the driving assembly includes a screw rod arranged on the inner frame, the screw rod is provided with a nut matched with the screw rod, the outer frame is rotationally connected to the nut, the nut drives the outer frame to reciprocate relative to the inner frame in the vertical direction, and the driving assembly further includes a guide mechanism to prevent the outer frame from rotating relative to the inner frame.

[0010] The outer frame comprises a first limit position and a second limit position, when the nut drives the outer frame to be in the first limit position, the wheels are in contact with the ground and the base is not in contact with the ground, when the nut drives the outer frame to be in the second limit position, the base is in contact with the ground and the wheels are not in contact with the ground.

[0011] As a preferred, the nut is provided with a sleeve, the inner diameter of the sleeve is larger than the inner thread major diameter of the nut, the inner side wall of the sleeve is provided with a convex ring, the convex ring cooperates with the nut to form a driving groove, the outer frame is provided with an extension ring extending into the sleeve, the extension ring is provided with a driving ring extending into the driving groove.

[0012] As a preferred, the sleeve is fixed to the nut by a screw, or the sleeve is welded to the nut.

[0013] As a preferred, the driving ring is fixed to the inner frame by an extension ring, the driving ring is fixed to the extension ring by a screw, the outer frame is provided with a through hole for the screw rod to pass through, the screw rod passes through the through hole and the extension ring in sequence.

[0014] As a preferred, the screw rod and the inner frame are integrated, the inner frame is provided with an inner reinforcing plate, the inner reinforcing plate and the inner frame are integrated, and the screw rod is located in the middle of the inner reinforcing plate.

[0015] As a preferred, the outer frame is provided with an outer reinforcing plate, the outer reinforcing plate and the outer frame are integrated, the through hole is located in the middle of the outer reinforcing plate, and the through hole penetrates through the outer reinforcing plate.

[0016] As a preferred, the nut is provided with a flange plate for facilitating the rotation of the nut, and the flange plate and the nut are integrated.

[0017] As a preferred, the outer frame comprises outer columns, the inner frame comprises inner columns, the guide mechanism comprises convex plates provided on the inner columns, each of the inner columns is provided with two convex plates, a guide groove is formed between the two convex plates of the same inner column, and at least a part of the outer columns is located in the guide groove.

[0018] As a preferred, the outer frame further comprises an outer top plate and an outer bottom ring, the outer top plate and the outer bottom ring are respectively arranged at two ends of the outer columns, the driving ring is arranged on the outer top plate, the inner frame comprises an inner top plate and an inner bottom ring, the inner top plate and the inner bottom ring are respectively arranged at two ends of the inner columns, the screw rod is arranged on the inner top plate, and the inner bottom ring is fixed to the base.

[0019] As preferred, the base is further provided with supporting feet, the supporting feet are fixed to the base through threads, and the supporting feet are uniformly distributed on the base, wherein the base is provided with studs, and the supporting feet are provided with screw holes matched with the studs.

[0020] Compared with the prior art, the utility model has the advantages of:

[0021] By setting the outer frame and the inner frame, the wheels are arranged on the outer frame, the inner frame is arranged on the base, the vacuum generating assembly is arranged on the inner frame, the outer frame reciprocates along the vertical direction relative to the inner frame, when the vacuum negative pressure device needs to be moved, the wheels on the outer frame are in contact with the ground, and the base is not in contact with the ground, at this time, the vacuum negative pressure device can be conveniently moved.

[0022] By setting the screw rod on the inner frame, the nut is arranged on the screw rod, and the outer frame is rotationally connected to the nut, the outer frame can be conveniently driven to move relative to the inner frame by rotating the nut, so that the vacuum negative pressure device is convenient to operate.

[0023] By setting the outer frame and the inner frame, the outer frame and the inner frame also have the function of including the vacuum generating assembly, and the vacuum generating assembly is not easy to be collided. BRIEF DESCRIPTION OF DRAWINGS

[0024] For the purpose of explanation, several embodiments of the utility model technology are set forth in the following drawings. The following drawings are incorporated in this text and constitute a part of the specific embodiments. In some cases, the well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts of the utility model subject technology.

[0025] Figure 1 It is the internal structure schematic view of the utility model.

[0026] Figure 2 It is the schematic view of the utility model.

[0027] Figure 3 It is Figure 2 The outer frame and the nut are omitted.

[0028] Figure 4 It is Figure 3 The inner frame is omitted.

[0029] Figure 5 is a schematic view of the outer frame.

[0030] Figure 6 is a schematic view of the nut.

[0031] shown in the figure:

[0032] 1. base, 11. vacuum generating assembly, 12. inner frame, 121. inner reinforcing plate, 122. inner upright, 123. protruding plate, 13. support leg.

[0033] 2. outer frame, 21. wheel, 22. outer reinforcing plate, 23. outer upright.

[0034] 3. drive assembly, 31. screw rod, 32. nut, 321. sleeve, 322. flange, 33. drive ring, 34. extension ring, 35. protruding ring. DETAILED DESCRIPTION

[0035] The detailed embodiments shown below are intended to serve as a description of the various configurations of the subject technology and are not intended to represent the only configurations in which the subject technology can be practiced. The detailed embodiments include specific details for the purpose of providing a thorough understanding of the subject technology. However, it will be apparent to those skilled in the art that the subject technology can be practiced without

[0036] It can be understood that, in this document, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another, without necessarily implying any actual relationship or order between such entities or actions.

[0037] The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0038] Referring to Figures 1 to 6 As shown in the figure, a portable mobile vacuum negative pressure device comprises a base 1, the base 1 is provided with a vacuum generating assembly 11, the base 1 is also provided with an inner frame 12;

[0039] The inner frame 12 is provided with an outer frame 2 provided with wheels 21 in contact with the ground, wherein the outer frame 2 is slidingly connected to the inner frame 12 in the vertical direction;

[0040] The inner frame 12 and the outer frame 2 are provided with a drive assembly 3 for driving the outer frame 2 to reciprocate relative to the inner frame 12 in the vertical direction, the drive assembly 3 comprising a screw rod 31 provided on the inner frame 12, the screw rod 31 being provided with a nut 32 cooperating with the screw rod 31, the outer frame 2 being rotationally connected to the nut 32, the nut 32 driving the outer frame 2 to reciprocate relative to the inner frame 12 in the vertical direction, the drive assembly 3 further comprising a guide mechanism for preventing the outer frame 2 from rotating relative to the inner frame 12;

[0041] The outer frame 2 comprises a first limit position and a second limit position, when the nut 32 drives the outer frame 2 to be in the first limit position, the wheels 21 are in contact with the ground and the base 1 is not in contact with the ground, when the nut 32 drives the outer frame 2 to be in the second limit position, the base 1 is in contact with the ground and the wheels 21 are not in contact with the ground.

[0042] In some embodiments, the nut 32 is provided with a sleeve 321, the inner diameter of the sleeve 321 is greater than the major diameter of the internal thread of the nut 32, the inner side wall of the sleeve 321 is provided with a convex ring 35, the convex ring 35 cooperates with the nut 32 to form a drive groove, the outer frame 2 is provided with an extension ring 34 extending into the sleeve 321, the extension ring 34 is provided with a drive ring 33 extending into the drive groove.

[0043] The drive ring 33 and the drive groove can also be assembled by hot assembly. The drive ring 33 and the sleeve 321 forming the drive groove are both made of metal material, and the hot assembly method can also meet the assembly requirements of the drive ring 33 and the drive groove.

[0044] Referring to Figures 1 to 6 In some embodiments, the sleeve 321 is fixed to the nut 32 by screws, or the sleeve 321 is welded to the nut 32.

[0045] The drive ring 33 is fixed to the inner frame 12 through the extension ring 34, the drive ring 33 is fixed to the extension ring 34 by screws, the outer frame 2 is provided with a through hole for the screw rod 31 to pass through, and the screw rod 31 passes through the through hole and the extension ring 34 in sequence.

[0046] When the drive ring 33 is fixed to the extension ring 34 by screws, and the sleeve 321 is fixed to the nut 32 by screws, the drive ring 33 and the drive groove are easy to assemble, and can be conveniently disassembled, maintained or replaced.

[0047] In some embodiments, the screw rod 31 is integrated with the inner frame 12, the inner frame 12 is provided with an inner reinforcing plate 121 integrated with the inner frame 12, and the screw rod 31 is located in the middle of the inner reinforcing plate 121.

[0048] The outer frame 2 is provided with an outer reinforcing plate 22 integrated with the outer frame 2, the through hole is located in the middle of the outer reinforcing plate 22, and the through hole penetrates through the outer reinforcing plate 22.

[0049] The arrangement of the inner reinforcing plate 121 and the outer reinforcing plate 22 improves the strength of the inner frame 12 and the outer frame 2, and the inner frame 12 and the outer frame 2 are not easy to deform during long-term use, thereby prolonging the service life of the inner frame 12 and the outer frame 2.

[0050] In some embodiments, the nut 32 is provided with a flange plate 322 facilitating rotation of the nut 32, and the flange plate 322 is integrated with the nut 32.

[0051] Referring to Figures 1 to 6 In some embodiments, the outer frame 2 includes outer columns 23, the inner frame 12 includes inner columns 122, the guide mechanism includes protruding plates 123 arranged on the inner columns 122, each of the inner columns 122 is provided with two protruding plates 123, a guide groove is formed between the two protruding plates 123 of the same inner column 122, and at least a part of the outer columns 23 is located in the guide groove.

[0052] The outer frame 2 further includes an outer top plate and an outer bottom ring, the outer top plate and the outer bottom ring are arranged at two ends of the outer columns 23 respectively, the drive ring 33 is arranged on the outer top plate, the inner frame 12 includes an inner top plate and an inner bottom ring, the inner top plate and the inner bottom ring are arranged at two ends of the inner columns 122 respectively, the screw rod 31 is arranged on the inner top plate, and the inner bottom ring is fixed to the base 1.

[0053] The inner frame 12 can be made of an integrated structure, and the outer frame 2 can also be made of an integrated structure. The gap between the outer columns 23 and the gap between the inner columns 122 expose the vacuum generating assembly 11 to the outside, so that the vacuum generating assembly 11 can be conveniently connected with other equipment.

[0054] In some embodiments, the base 1 is further provided with support feet 13, the support feet 13 are fixed to the base 1 by threads, and the support feet 13 are uniformly distributed on the base 1, wherein the base 1 is provided with studs, and the support feet 13 are provided with screw holes matched with the studs.

[0055] The support leg 13 is fixed to the base 1 by screwing, and the position of the support leg 13 relative to the base 1 can be adjusted, so that the base 1 can be conveniently positioned on an uneven ground.

[0056] The above has introduced the subject technical scheme of the utility model and the corresponding details, and it can be understood that the above introduction is only some implementation of the subject technical scheme of the utility model, and some details can be omitted in the specific implementation.

[0057] In addition, in some implementation of the above utility model, multiple implementations can be combined, and various combination schemes are not listed one by one due to the length. The person skilled in the art can freely combine the above implementation according to the needs in the specific implementation to obtain better application experience.

[0058] The person skilled in the art can obtain other detailed configurations or drawings according to the subject technical scheme of the utility model and the drawings in the implementation of the subject technical scheme of the utility model, and it is obvious that these details still belong to the range covered by the subject technical scheme of the utility model without departing from the subject technical scheme of the utility model.

Claims

1. A portable mobile vacuum negative pressure device, characterized by: The base (1) is provided with a vacuum generating assembly (11), and the base (1) is further provided with an inner frame (12); the inner frame (12) is provided with an outer frame (2), and the outer frame (2) is provided with wheels (21) in contact with the ground, wherein the outer frame (2) is slidingly connected to the inner frame (12) in the vertical direction; a drive assembly (3) is arranged between the inner frame (12) and the outer frame (2) to drive the outer frame (2) to reciprocate relative to the inner frame (12) in the vertical direction, the drive assembly (3) comprises a screw rod (31) arranged on the inner frame (12), the screw rod (31) is provided with a nut (32) matched with the screw rod (31), the outer frame (2) is rotationally connected to the nut (32), and the nut (32) drives the outer frame (2) to reciprocate relative to the inner frame (12) in the vertical direction; the drive assembly (3) further comprises a guide mechanism for preventing the outer frame (2) from rotating relative to the inner frame (12); the outer frame (2) comprises a first limit position and a second limit position, when the nut (32) drives the outer frame (2) to be in the first limit position, the wheels (21) are in contact with the ground and the base (1) is not in contact with the ground, and when the nut (32) drives the outer frame (2) to be in the second limit position, the base (1) is in contact with the ground and the wheels (21) are not in contact with the ground.

2. The portable mobile vacuum sub- atmospheric pressure device of claim 1, wherein: The nut (32) is provided with a sleeve (321), the inner diameter of the sleeve (321) is greater than the inner thread major diameter of the nut (32), the inner side wall of the sleeve (321) is provided with a convex ring (35), the convex ring (35) and the nut (32) cooperate to form a drive groove, and the outer frame (2) is provided with an extension ring (34) extending into the sleeve (321), and the extension ring (34) is provided with a drive ring (33) extending into the drive groove.

3. The portable mobile vacuum sub- atmospheric pressure device of claim 2, wherein: The sleeve (321) is fixed to the nut (32) by a screw, or the sleeve (321) is welded to the nut (32).

4. The portable mobile vacuum sub- atmospheric pressure device of claim 3, wherein: The drive ring (33) is fixed to the inner frame (12) through the extension ring (34), the drive ring (33) is fixed to the extension ring (34) by a screw, the outer frame (2) is provided with a through hole through which the screw rod (31) passes, and the screw rod (31) passes through the through hole and the extension ring (34) in sequence.

5. The portable mobile vacuum sub-atmospheric pressure device of claim 4, wherein: The screw rod (31) and the inner frame (12) are of an integral structure, the inner frame (12) is provided with an inner reinforcing plate (121), the inner reinforcing plate (121) and the inner frame (12) are of an integral structure, and the screw rod (31) is located at the middle part of the inner reinforcing plate (121).

6. The portable mobile vacuum sub- atmospheric pressure device of claim 5, wherein: The outer frame (2) is provided with an outer reinforcing plate (22), the outer reinforcing plate (22) and the outer frame (2) are of an integral structure, the through hole is located at the middle part of the outer reinforcing plate (22), and the through hole penetrates through the outer reinforcing plate (22).

7. The portable mobile vacuum sub- atmospheric pressure device of claim 6, wherein: The nut (32) is provided with a flange (322) facilitating rotation of the nut (32), the flange (322) being of an integral structure with the nut (32).

8. The portable mobile vacuum sub- atmospheric pressure device of claim 1, wherein: The outer frame (2) comprises outer columns (23), the inner frame (12) comprises inner columns (122), the guide mechanism comprises protruding plates (123) arranged on the inner columns (122), each of the inner columns (122) is provided with two protruding plates (123), a guide groove is formed between the two protruding plates (123) of the same inner column (122), and at least a part of the outer columns (23) is located in the guide groove.

9. The portable mobile vacuum sub- atmospheric pressure device of claim 8, wherein: The outer frame (2) further comprises an outer top plate and an outer bottom ring, the outer top plate and the outer bottom ring are arranged at two ends of the outer columns (23) respectively, a driving ring (33) is arranged on the outer top plate, the inner frame (12) comprises an inner top plate and an inner bottom ring, the inner top plate and the inner bottom ring are arranged at two ends of the inner columns (122) respectively, the screw rod (31) is arranged on the inner top plate, and the inner bottom ring is fixed to the base (1).

10. The portable mobile vacuum sub- atmospheric pressure device of claim 1, wherein: The base (1) is further provided with supporting legs (13), the supporting legs (13) are fixed to the base (1) through threads, and the supporting legs (13) are uniformly distributed on the base (1), wherein the base (1) is provided with screw posts, and the supporting legs (13) are provided with screw holes matched with the screw posts.

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