Reciprocating vacuum pump with adjustable tension degree

Abstract

The utility model discloses a reciprocating vacuum pump with adjustable tension degree, which belongs to the technical field of vacuum pumps and comprises a vacuum pump body, a bottom plate, a driving wheel, a driving motor and a belt, the bottom plate and the driving motor are fixedly arranged at the bottom of the vacuum pump body respectively, and the driving wheel is arranged on one side of the vacuum pump body and used for driving a piston to reciprocate. The driving wheel is connected with a synchronous wheel at the output end of the driving motor through a belt, a stand column is vertically arranged at the top of the bottom plate, a mounting frame is longitudinally and slidably connected to the outer wall of the stand column, a lifting assembly used for driving the mounting frame is arranged at the top of the stand column, and buffering assemblies are arranged on the inner sides of the two ends of the mounting frame correspondingly. The tension of the belt for driving can be automatically adjusted, the transmission stability of the vacuum pump is improved, and the service life of the belt is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum pump technical field, concretely is a reciprocating vacuum pump of adjustable tension degree. BACKGROUND

[0002] Reciprocating vacuum pump is a kind of mechanical vacuum pump, through reciprocating motion makes gas molecules constantly be compressed and discharged space, thereby reducing the number of gas molecules in space, reciprocating vacuum pump can provide high pressure difference, high vacuum degree, high air speed etc., and its simple structure, easy to maintain and maintain simultaneously it is widely used in laboratory, medical, chemical and production and manufacture etc.

[0003] At present, reciprocating vacuum pump is driven by motor to drive piston reciprocating motion, motor and the runner driven piston are connected by belt, the runner belt of prior art cannot adjust the tension of belt in the working process, and the belt will be loose after long-term practical aging, in order to maintain driving effect, it needs to replace new belt or adjust motor position, and it is also troublesome to disassemble motor, based on this, it is necessary to provide a reciprocating vacuum pump with adjustable belt tension. UTILITY MODEL CONTENTS

[0004] The utility model discloses a reciprocating vacuum pump with adjustable tension, to at least partly solve the above technical problem, the tension of vacuum pump belt can be adjusted, and the transmission stability of vacuum pump driving wheel is improved.

[0005] To achieve the above object, the utility model provides the following technical scheme: including vacuum pump body, bottom plate, driving wheel, drive motor, belt, the bottom plate and drive motor are fixedly arranged at the bottom of vacuum pump body respectively, the driving wheel is arranged in one side of vacuum pump body and is used to drive piston reciprocating, the driving wheel is connected with the synchronous wheel on the output end of drive motor through belt, the vertical setting of bottom plate top has the stand, the outer wall of stand is longitudinally slidably connected with mounting bracket, the top of stand is provided with the lifting assembly for driving mounting bracket, the inboard of both ends of mounting bracket is provided with buffer assembly, the inboard of mounting bracket is provided with the tensioner that rotates between two buffer assemblies, and the tensioner is in contact with the belt between drive motor and driving wheel;

[0006] Buffer assembly includes two buffer plates slidably connected inboard of mounting bracket, guide block is slidably inserted in the edge of buffer plate, and spring is vertically fixedly arranged in the buffer plate and used to push guide block.

[0007] Preferably, the top of the stand is provided with a rotating sleeve.

[0008] The lifting assembly comprises a rotating disc rotationally arranged on the upper end of the rotating sleeve, a lead screw vertically fixed on the bottom of the rotating disc and extending downwards into the interior of the stand, a lead screw sleeve threadedly sleeved on the outer wall of the lead screw, and a sliding block fixedly connected to one side of the lead screw sleeve and fixedly connected with the mounting frame through the stand.

[0009] Preferably, the outer wall of the stand is provided with a notch groove matched with the sliding block, one end of the sliding block extends outwards through the notch groove, and the inner side of the mounting frame is provided with a guide groove matched with the guide block on both sides.

[0010] Preferably, the number of belt grooves formed on the outer wall of the driving wheel, the tensioning wheel and the driving motor pulley is the same and symmetrical.

[0011] Preferably, a bearing is arranged at the connection between the buffer plate and the tensioning wheel, and the tensioning wheel is rotatably inserted into the bearing through the shaft rods fixedly arranged at both ends.

[0012] Preferably, the spring is located in the guide groove, and both ends of the spring are fixedly connected with the guide blocks of the mounting frame.

[0013] Preferably, when the spring is compressed to the highest state, the tensioning wheel does not contact the mounting frame.

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

[0015] 1. When the utility model is used, the rotating disc is rotated clockwise, the lead screw is rotated clockwise, the lead screw sleeve threadedly sleeved on the lead screw is rotated, the lead screw sleeve is connected with the sliding block which slides horizontally, the lead screw sleeve moves horizontally downwards, the mounting frame connected with one side of the sliding block moves downwards, the tensioning wheel rotatably arranged in the mounting frame is located above the belt, when the tensioning wheel moves and contacts the belt, the belt can be pressed and adjusted, the tensioning degree of the belt can be adjusted at any time when the reciprocating vacuum pump works, the belt and the driving wheel motor synchronous wheel are in the best state, and the transmission stability is improved.

[0016] 2. When the utility model is used, the buffer assembly arranged at both ends of the tensioning wheel is used, when the tensioning degree of the belt is too tight, the pressing force of the tensioning wheel on the belt is released, when the belt is too loose, the tensioning wheel is pushed downwards through the elasticity of the spring, the tensioning force can be automatically adjusted according to the loosening degree of the belt, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this embodiment;

[0019] Figure 2 This is a schematic diagram of the main view plane structure of this embodiment;

[0020] Figure 3 This is a side view diagram of the structure in this embodiment;

[0021] Figure 4 This is a schematic diagram of the side sectional view of the column in this embodiment;

[0022] Figure 5 This is an example. Figure 2 A schematic diagram of the enlarged structure A in the diagram;

[0023] Figure 6 This is an example. Figure 4 A schematic diagram of the enlarged B structure in the diagram.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Vacuum pump body; 11. Base plate; 12. Drive wheel; 13. Drive motor; 2. Buffer assembly; 21. Buffer plate; 22. Guide block; 23. Spring; 3. Belt; 4. Column; 41. Notch groove; 5. Lifting assembly; 51. Rotary disc; 52. Lead screw; 53. Lead screw sleeve; 54. Slider; 6. Mounting bracket; 61. Guide groove; 7. Tensioning wheel; 71. Shaft. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-6The utility model provides a technical scheme: a reciprocating vacuum pump of adjustable tension degree, including vacuum pump body 1, bottom plate 11, drive wheel 12, drive motor 13, belt 3, bottom plate 11 is fixed with drive motor 13 respectively setting in the bottom of vacuum pump body 1, drive wheel 12 sets up in vacuum pump body 1 one side for driving piston reciprocating, drive wheel 12 is connected with the synchronous wheel on the output end of drive motor 13 through belt 3, the vertical setting of bottom plate 11 top has stand 4, the longitudinal sliding connection of stand 4 outer wall has mounting bracket 6, the top of stand 4 is provided with the lifting assembly 5 for driving mounting bracket 6, the both ends inboard of mounting bracket 6 are provided with buffer assembly 2, the inboard of mounting bracket 6 is provided with the tensioner 7 rotating between two buffer assemblies 2, and the tensioner 7 is located between drive motor 13 and drive wheel 12 and contacts with belt 3;

[0028] Buffer assembly 2, including two buffer plates 21 of sliding connection inboard two of mounting bracket 6, the guide block 22 of insert joint sliding setting in the edge of buffer plate 21, and the spring 23 of vertical fixed setting buffer plate 21 inside for pushing guide block 22.

[0029] When adjusting the tension degree of belt 3, rotate the rotary disc 51 clockwise, drive the connected lead screw 52 to rotate clockwise, make the lead screw sleeve 53 on the lead screw 52 rotate, the lead screw sleeve 53 is connected with the slider 54 sliding parallel, make the lead screw sleeve 53 move down parallel, make the mounting bracket 6 connected with the slider 54 on one side move down, through the tensioner 7 rotating inboard of mounting bracket 6 is located above belt 3, when the tensioner 7 moves and contacts with belt 3, can adjust the tension degree of belt 3, when the reciprocating vacuum pump works, can adjust the tension degree of belt 3 at any time, make belt 3 and the motor synchronous wheel of drive wheel 12 are in the best state, improve the transmission stability;

[0030] When the tension degree of belt 3 is too tight, the tensioner moves up, makes the buffer plate 21 drive the connected sliding guide block 22 move up, makes the spring 23 located in the guide block 22 and the inboard of mounting bracket 6 together extrude, releases the pressure degree of the tensioner to belt 3, when the belt 3 is too loose, the tensioner 7 is pushed down by the elasticity of spring 23, according to the loose condition of belt 3, can reach the effect of automatic tension adjustment.

[0031] Referring to Figure 1 And Figure 4 In some embodiments, the top of the stand 4 is provided with a rotating sleeve;

[0032] The lifting assembly 5 comprises a rotating disc 51 rotationally arranged on the upper end of the rotating sleeve, a lead screw 52 vertically fixed on the bottom of the rotating disc 51 and extending downwardly into the interior of the stand column 4, a lead screw sleeve 53 threadedly arranged on the outer wall of the lead screw 52, and a sliding block 54 fixedly connected to one side of the lead screw sleeve 53 and fixedly connected to the mounting frame 6 through the stand column 4.

[0033] The rotating disc 51 is rotationally arranged in the matching rotating sleeve, the lead screw 52 is vertically fixedly connected to the lower end of the rotating disc 51 and extends into the interior of the stand column 4, the lead screw sleeve 53 is threadedly arranged on the outer wall of the lead screw 52, and the rotating lead screw 52 drives the parallel movement of the mounting frame 6 connected to the sliding block 54 through the cooperation between the lead screw sleeve 53 and the sliding block 54.

[0034] Referring to Figure 2 and Figure 4 In some embodiments, the outer wall of the stand column 4 is provided with a notch groove 41 matched with the sliding block 54, one end of the sliding block 54 extends outwardly through the notch groove 41, the inner side of the mounting frame 6 is provided with a guide groove 61 matched with the guide block 22, and one end of each of the two guide blocks 22 is inserted into the two guide grooves 61 to slide.

[0035] The notch groove 41 formed in the outer wall of the stand column 4 is used for extending one end of the sliding block 54 to the outside of the stand column 4 to connect with the mounting frame 6, and the guide groove 61 formed in the inner side of the mounting frame 6 is used for constraining the sliding of the buffer plate 21 on the inner side of the mounting frame 6.

[0036] Referring to Figure 3 In some embodiments, the number of belt grooves formed in the outer wall of the belt pulley of the driving wheel 12, the tensioning wheel 7 and the driving motor 13 is the same and symmetrical to each other.

[0037] The number of grooves on the surface of the belt pulley of the driving wheel 12, the tensioning wheel 7 and the output end of the driving motor 13 is the same, and each groove is symmetrical to each other, and the belt 3 is installed in parallel in each symmetrical groove, which facilitates the pressing of the belt 3 by the tensioning wheel 7.

[0038] Referring to Figure 4 In some embodiments, the buffer plate 21 is provided with a bearing at the connection position with the tensioning wheel 7, and the tensioning wheel 7 is rotatably inserted into the bearing through the shaft rods 71 fixedly arranged at both ends.

[0039] The bearing is arranged on the buffer plate 21 to support the rotation of the shaft rods 71 at both ends of the tensioning wheel 7, so that the tensioning wheel 7 rotates between the two buffer plates 21.

[0040] Referring to Figure 5 In some embodiments, the spring 23 is located in the guide groove 61, and both ends of the spring 23 are fixedly connected to the guide blocks 22 of the mounting frame 6.

[0041] The spring 23 is located in the guide groove 61 and used to push the guide block 22 to move in parallel and reset.

[0042] Referring to Figure 2 and Figure 4 In some embodiments, when the spring 23 is compressed to the highest state, the tensioning wheel 7 does not contact the mounting frame 6.

[0043] When the spring 23 is compressed to the highest state, the tensioning wheel 7 does not contact the mounting frame 6, and sufficient space is left between the tensioning wheel 7 and the mounting frame 6, so that the rotation of the tensioning wheel 7 is not affected when the tensioning wheel 7 is adjusted.

[0044] In the description of the present application, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0045] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "threading" and the like should be understood broadly, for example, they can be fixedly connected, or detachably connected, or integrated; they can be mechanically connected, or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium; they can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited, and those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0046] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An adjustable tension reciprocating vacuum pump, comprising a vacuum pump body (1), a bottom plate (11), a drive wheel (12), a drive motor (13), a belt (3), the bottom plate (11) and the drive motor (13) are respectively fixedly arranged at the bottom of the vacuum pump body (1), the drive wheel (12) is arranged on one side of the vacuum pump body (1) for driving the piston to reciprocate, the drive wheel (12) and the synchronous wheel on the output end of the drive motor (13) are connected through the belt (3), characterized in that: The bottom plate (11) is vertically provided with a stand (4) on the top, the outer wall of the stand (4) is longitudinally and slidingly connected with a mounting rack (6), the top of the stand (4) is provided with a lifting assembly (5) for driving the mounting rack (6), the inner side of both ends of the mounting rack (6) is provided with a buffer assembly (2), the inner side of the mounting rack (6) is provided with a tensioning wheel (7) rotating between the two buffer assemblies (2), the tensioning wheel (7) is located between the driving motor (13) and the driving wheel (12) and contacts with the belt (3). The buffer assembly (2) comprises two buffer plates (21) slidingly connected on the inner side of the mounting rack (6), a guide block (22) inserted and slidingly arranged on the edge of the buffer plate (21), and a spring (23) vertically and fixedly arranged inside the buffer plate (21) for pushing the guide block (22).

2. The reciprocating vacuum pump of claim 1, wherein: The top of the stand (4) is provided with a rotating sleeve; The lifting assembly (5) comprises a rotating disc (51) rotationally arranged on the upper end of the rotating sleeve, a lead screw (52) vertically and fixedly arranged on the bottom of the rotating disc (51) and extending to the lower part of the inside of the stand (4), a lead screw sleeve (53) threadedly sleeved on the outer wall of the lead screw (52), and a sliding block (54) fixedly connected on one side of the lead screw sleeve (53) and fixedly connected with the mounting rack (6) through the stand (4).

3. The reciprocating vacuum pump of claim 1, wherein: The outer wall of the stand (4) is provided with a notch groove (41) matched with the sliding block (54), one end of the sliding block (54) extends outward through the notch groove (41), and the inner side of the mounting rack (6) is provided with a guide groove (61) matched with the guide block (22) on both sides.

4. The reciprocating vacuum pump of claim 1, wherein: The driving wheel (12), the tensioning wheel (7) and the driving motor (13) are provided with the same number of belt grooves on the outer wall of the pulley and are symmetrical to each other.

5. A reciprocating vacuum pump with adjustable tension according to claim 4, characterized in that: The buffer plate (21) is provided with a bearing at the connection with the tensioning wheel (7), and the tensioning wheel (7) rotates in the bearing through the shaft rods (71) fixedly arranged at both ends.

6. The reciprocating vacuum pump of claim 1, wherein: The spring (23) is located in the guide groove (61), and both ends of the spring (23) are fixedly connected with the guide blocks (22) of the mounting rack (6).

7. The reciprocating vacuum pump of claim 1, wherein: When the spring (23) is compressed to the highest state, the tensioning wheel (7) does not contact the mounting rack (6).

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