Vacuum pump with good stability

Abstract

The utility model relates to the field of vacuum pumps, in particular to a vacuum pump with good stability. The vacuum pump with the good stability comprises a vacuum pump body and further comprises a filter pipe, the filter pipe is arranged at the input end of the vacuum pump body and fixedly connected with the vacuum pump body through a first valve pipe, and a second valve pipe is fixed to the other end of the filter pipe; the filter screen is fixed in the filter pipe, and the convex surface of the filter screen faces the upstream direction in the filter pipe; the cleaning assembly is mounted in the filter pipe, and the cleaning assembly comprises a first cleaning part and a second cleaning part. According to the vacuum pump with the good stability, the filter pipe is arranged at the output end of the vacuum pump body, dirt in a medium is intercepted through the filter screen, and the dirt is prevented from entering the vacuum pump body, so that when the vacuum pump is used, the damage degree to the vacuum pump is smaller, the vacuum pump operates more stably, and the service life of the vacuum pump is prolonged. And the service life of the vacuum pump is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the field of vacuum pumps, in particular to a vacuum pump with good stability. Background Technique

[0002] A vacuum pump is a device that generates, improves, and maintains a vacuum in a closed space by various methods. A vacuum pump can be defined as a device or equipment that uses mechanical, physical, chemical, or physical-chemical methods to evacuate the pumped container to obtain a vacuum. The basic parameters of a vacuum pump include pumping speed, ultimate vacuum, and working pressure range.

[0003] Currently, in plastic extrusion production, a single water-ring vacuum pump is used to generate vacuum for production. During operation, there are problems such as the vacuum pump being stuck and burned out due to scale and other reasons, and problems such as vacuum disc wear, low efficiency, low vacuum degree, and high energy consumption during long-term operation. When used in profile shaping vacuum concentration, the vacuum fluctuation is large, and it is not easy to detect defective products due to vacuum fluctuation problems during production, resulting in feedback, which has a great impact on stable production and product quality.

[0004] Therefore, it is necessary to provide a new vacuum pump with good stability to solve the above technical problems. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a vacuum pump with good stability.

[0006] The vacuum pump with good stability provided by the utility model includes a vacuum pump body, and further includes:

[0007] A filter pipe, which is arranged at the input end of the vacuum pump body and is fixedly connected to the vacuum pump body through a first valve pipe. The other end of the filter pipe is fixed with a second valve pipe;

[0008] A filter net, which is hemispherical and fixed inside the filter pipe. The convex surface of the filter net faces the upstream direction inside the filter pipe;

[0009] A cleaning assembly, which is installed inside the filter pipe. The cleaning assembly includes a first cleaning part and a second cleaning part. The first cleaning part contacts the convex surface of the filter net, and the second cleaning part contacts the inner wall of the filter pipe, and scrapes off the dirt attached to the filter net and the inner wall of the filter pipe during rotation.

[0010] Preferably, the inner diameter of the filter pipe increases from the end connected to the first valve pipe to the end connected to the second valve pipe.

[0011] Preferably, the cleaning assembly further includes a first fixing frame and a second fixing frame fixed inside the filter pipe. The position of the first fixing frame is close to the first valve pipe, and the position of the second fixing frame is close to the second valve pipe;

[0012] The first transmission shaft is connected by a bearing to the first fixing frame. One end of the first transmission shaft is fixed with an impeller, and the first transmission shaft also penetrates through the filter net.

[0013] The second transmission shaft is connected by a bearing to the second fixing frame. One end of the second transmission shaft is detachably connected to one end of the first transmission shaft, and both the first cleaning part and the second cleaning part are mounted on the second transmission shaft.

[0014] Preferably, the first cleaning part includes a plurality of arc-shaped plates that are annularly distributed and fixed to the circumferential outer wall of the second transmission shaft. The arc-shaped plates are concentrically arranged outside the filter net, and first brushes that contact the filter net are provided on the inner side wall of the arc-shaped plates.

[0015] Preferably, the second cleaning part includes a spiral plate fixed to the second transmission shaft, and second brushes that contact the inner circumferential wall of the filter pipe are provided on the outer edge of the spiral plate.

[0016] Preferably, one end of the first transmission shaft is fixed with a first docking plate, and a hexagonal insert block is fixed to one side of the first docking plate; while one end of the second transmission shaft is fixed with a second docking plate, a hexagonal insert groove is additionally provided on one side of the second docking plate, and the hexagonal insert block can be inserted into the hexagonal insert groove to make the first docking plate and the second docking plate fit together, and they are fixed by bolts.

[0017] Preferably, a waste storage pipe is also connected and fixed to the position of the outer side of the filter pipe close to the filter net for collecting the dirt cleaned from the inner walls of the filter net and the waste storage pipe, and a third valve pipe is installed at the other end of the waste storage pipe.

[0018] Preferably, an external connection pipe is connected and fixed to the position of the circumferential outer wall of the filter pipe close to the impeller, and a cover is threadedly connected to the external connection pipe.

[0019] Preferably, an opening is also provided at the position of the circumferential outer wall of the filter pipe corresponding to the second transmission shaft, and a sealing plate for closing the opening is fixed by bolts.

[0020] Compared with the related art, the vacuum pump with good stability provided by the present utility model has the following beneficial effects:

[0021] 1. A filter pipe is provided at the output end of the vacuum pump body, and a filter net is arranged inside the filter pipe. The filter net intercepts the dirt in the medium to prevent the dirt from entering the vacuum pump body. Therefore, when using this vacuum pump, the damage to the vacuum pump itself is smaller, the operation of the vacuum pump is more stable, and the service life of the vacuum pump is greatly improved;

[0022] 2. In the cleaning assembly, both the first transmission shaft and the second transmission shaft are transmission structures. An impeller is arranged on the first transmission shaft, and a spiral plate is arranged on the second transmission shaft. Therefore, during the process of the flowing medium, a force can be generated on the impeller and the spiral plate, thereby generating torque on the first transmission shaft and the second transmission shaft to drive the first transmission shaft and the second transmission shaft to rotate. During the rotation process, the first brush and the second brush are respectively used to clean the inner wall of the filter screen and the filter pipe, so that the filter screen can be prevented from being blocked and normal operation can be ensured. At the same time, the dirt cleaned from the inner wall of the filter screen and the filter pipe will be pushed into the waste storage pipe for centralized collection.

[0023] 3. A waste storage pipe is arranged outside the filter pipe to collect impurities. At the same time, the external connection pipe can be opened, so that the inside of the filter pipe can be directly flushed to achieve in-depth cleaning of the inside of the filter pipe. Brief Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of a preferred embodiment of a vacuum pump with good stability provided by the present utility model;

[0025] Figure 2 It is a schematic structural diagram outside the filter pipe shown by the present utility model;

[0026] Figure 3 It is a schematic cross-sectional structural diagram of the filter pipe shown by the present utility model;

[0027] Figure 4 It is a schematic diagram of the filter pipe from an oblique side shown by the present utility model;

[0028] Figure 5 It is a schematic structural diagram of the filter screen shown by the present utility model;

[0029] Figure 6 It is a schematic structural diagram of the cleaning assembly shown by the present utility model Figure 1 ;

[0030] Figure 7 It is a schematic structural diagram of the cleaning assembly shown by the present utility model Figure 2 。

[0031] Reference numerals in the drawings: 1. Vacuum pump body; 2. First valve pipe; 3. Filter pipe; 4. Second valve pipe; 5. Filter screen; 6. Cleaning assembly; 61. First fixing bracket; 62. First transmission shaft; 63. Impeller; 64. First docking plate; 65. Hexagonal insert block; 66. Second fixing bracket; 67. Second transmission shaft; 68. Second docking plate; 69. Hexagonal groove; 610. Arc plate; 611. First brush; 612. Spiral plate; 613. Second brush; 7. Waste storage pipe; 8. Third valve pipe; 9. External connection pipe; 10. Sealing cover; 11. Sealing plate. Detailed implementation manners

[0032] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0033] The following describes in detail the specific implementation of the present utility model in combination with specific embodiments.

[0034] Please refer to Figures 1 to 7 , a vacuum pump with good stability provided by an embodiment of the present utility model. The vacuum pump with good stability includes a vacuum pump body 1, and further includes:

[0035] A filter pipe 3, which is arranged at the input end of the vacuum pump body 1 and is fixedly connected to the vacuum pump body 1 through a first valve pipe 2. The other end of the filter pipe 3 is fixed with a second valve pipe 4;

[0036] A filter screen 5, which is hemispherical and is fixed inside the filter pipe 3. The convex surface of the filter screen 5 faces the upstream direction inside the filter pipe 3;

[0037] A cleaning assembly 6, which is installed inside the filter pipe 3. The cleaning assembly 6 includes a first cleaning part and a second cleaning part. The first cleaning part contacts the convex surface of the filter screen 5, and the second cleaning part contacts the inner wall of the filter pipe 3, and scrapes off the dirt attached to the filter screen 5 and the inner wall of the filter pipe 3 during rotation.

[0038] It should be noted that in this device, a filter pipe 3 is arranged at the input end of the vacuum pump body 1, and a filter screen 5 is arranged inside the filter pipe 3. The filter screen 5 can intercept the dirt in the medium, so as to avoid the dirt from entering the inside of the vacuum pump body 1. Therefore, when using this vacuum pump, the damage to the vacuum pump itself is smaller, the operation of the vacuum pump is more stable, and the service life of the vacuum pump is greatly improved; at the same time, the filter screen 5 is hemispherical, and the three-dimensional structure design is more convenient for cleaning to ensure the normal operation of the device;

[0039] The cleaning assembly 6 is installed inside the filter pipe 3. When the medium flows through the filter pipe 3, the kinetic energy of the medium itself will be converted into the kinetic energy of the movement of the cleaning assembly 6, causing the cleaning assembly 6 to rotate. During the rotation, the first cleaning part is used to clean the filter screen 5, and at the same time, the second cleaning part is used to clean the inner wall of the filter pipe 3, so as to realize the continuous cleaning of the filter pipe 3 and the filter screen 5 inside it, avoid the filter screen 5 from being blocked, and no energy consumption is generated during the movement of the cleaning assembly 6.

[0040] In the embodiment of the present utility model, please refer to Figure 2 and Figure 3, the inner diameter of the filter tube 3 increases from one end connected to the first valve tube 2 to the other end connected to the second valve tube 4.

[0041] It should be noted that: the inner diameter of the filter tube 3 changes continuously, that is, it gradually decreases from the input port to the output port. Therefore, the flow rate of the medium will become faster and faster, and the kinetic energy it has will also become larger and larger, and the effect will be better when driving the cleaning component 6 to move.

[0042] In an embodiment of the present invention, please refer to Figure 3 and Figure 6 , the cleaning component 6 further includes a first fixing frame 61 and a second fixing frame 66 fixed inside the filter tube 3. The position of the first fixing frame 61 is close to the first valve tube 2, and the position of the second fixing frame 66 is close to the second valve tube 4;

[0043] A first transmission shaft 62 is connected to the first fixing frame 61 by a bearing. One end of the first transmission shaft 62 is fixed with an impeller 63, and the first transmission shaft 62 also penetrates through the filter net 5;

[0044] A second transmission shaft 67 is connected to the second fixing frame 66 by a bearing. One end of the second transmission shaft 67 is detachably connected to one end of the first transmission shaft 62, and both the first cleaning part and the second cleaning part are installed on the second transmission shaft 67;

[0045] Among them, the first cleaning part includes a plurality of arc-shaped plates 610 distributed in a ring and fixed to the circumferential outer wall of the second transmission shaft 67. The arc-shaped plates 610 are concentrically arranged outside the filter net 5, and a first brush 611 in contact with the filter net 5 is provided on the inner side wall of the arc-shaped plate 610;

[0046] The second cleaning part includes a spiral plate 612 fixed to the second transmission shaft 67, and a second brush 613 in contact with the circumferential inner wall of the filter tube 3 is provided on the outer edge of the spiral plate 612.

[0047] It should be noted that in the cleaning assembly 6, the first transmission shaft 62 and the second transmission shaft 67 together form a complete transmission shaft. An impeller 63 is provided on the first transmission shaft 62. The position of the impeller 63 is closer to the output port of the filter tube 3, where the medium flow rate is fast. Therefore, during the flow process, a force can be generated on the impeller 63 to drive the impeller 63 to rotate. The rotation of the impeller 63 can drive the first transmission shaft 62 and the second transmission shaft 67 to rotate together. At this time, the arc-shaped plate 610 in the first cleaning part rotates together, and the inner wall of the arc-shaped plate 610 has a first brush 611, which is in direct contact with the filter net 5. Therefore, during the rotation process, the dirt attached to the filter net 5 can be brushed off by the first brush 611 to realize the cleaning of the filter net 5. At the same time, the spiral plate 612 in the second cleaning part also rotates together. A second brush 613 is provided at the outer edge position of the spiral plate 612, and the second brush 613 can be in contact with the inner wall of the filter tube 3. Therefore, during the rotation process, the dirt attached to the inner wall of the filter tube 3 can be brushed off by the second brush 613 to realize the cleaning of the inner wall of the filter tube 3.

[0048] The spiral plate 612 is the main structure for installing the second brush 613. At the same time, its itself is spiral. Therefore, during the process of the medium flowing through the filter tube 3, the medium will also generate a force on the spiral plate 612. When the spiral plate 612 is subjected to the force, a torque will also be generated on the second transmission shaft 67. When used in cooperation with the impeller 63, it can further improve the rotation effect of the transmission shaft.

[0049] The first fixing frame 61 and the second fixing frame 66 are the fixing bases of the entire cleaning assembly 6 to keep the entire cleaning assembly 6 stable. The first transmission shaft 62 and the second transmission shaft 67 are respectively installed on the first fixing frame 61 and the second fixing frame 66 in a bearing connection manner. Therefore, the rotation effect of the transmission shaft can also be ensured.

[0050] In the embodiment of the present utility model, please refer to Figure 7 , a first docking plate 64 is fixed at one end of the first transmission shaft 62, and a hexagonal insert 65 is fixed on one side of the first docking plate 64; while a second docking plate 68 is fixed at one end of the second transmission shaft 67, and a hexagonal insert groove 69 is additionally provided on one side of the second docking plate 68. The hexagonal insert 65 can be inserted into the hexagonal insert groove 69 to make the first docking plate 64 and the second docking plate 68 fit, and be fixed by bolts.

[0051] It should be noted that: both the first cleaning part and the second cleaning part are installed on the second transmission shaft 67. For the installation of the first transmission shaft 62 and the second transmission shaft 67, docking plates are provided at the opposite ends of the two. At the same time, a hexagonal insert 65 and a hexagonal slot 69 are respectively provided. The hexagonal insert 65 can be directly inserted into the hexagonal slot 69 to achieve the preliminary installation and precise docking of the two. Moreover, the hexagonal insert and the slot can also limit each other, making the first transmission shaft 62 and the second transmission shaft 67 have higher stability after docking. Then, bolts or screws are used to reinforce the two docking plates to ensure the stability of their connection; at the same time, when the first cleaning part and the second cleaning part are damaged, the second transmission shaft 67 can be directly disassembled to facilitate the maintenance and replacement of the cleaning part, etc.

[0052] In the embodiment of the present utility model, please refer to Figures 2 to 4 , a waste storage pipe 7 is also connected and fixed to the outer side of the filter pipe 3 near the filter net 5 for collecting the dirt cleaned from the inner wall of the filter net 5 and the filter pipe 3. The other end of the waste storage pipe 7 is provided with a third valve pipe 8;

[0053] An outer connecting pipe 9 is connected and fixed to the circumferential outer wall of the filter pipe 3 near the impeller 63, and a cover 10 is threadedly connected to the outer connecting pipe 9;

[0054] There is also an opening on the circumferential outer wall of the filter pipe 3 corresponding to the second transmission shaft 67, and a sealing plate 11 for closing the opening is fixed by bolts.

[0055] It should be noted that: the waste storage pipe 7 is installed on the filter pipe 3, and its position is near the filter net 5. Therefore, the dirt scraped from the filter net 5 can be more conveniently concentrated in the waste storage pipe 7; at the same time, the spiral second brush 613 can not only clean the inner wall of the filter pipe 3, but also has a guiding effect on the cleaned dirt, that is, it pushes the cleaned dirt towards the position of the waste storage pipe 7 until the dirt enters the waste storage pipe 7. A third valve pipe 8 is provided at the lower end of the waste storage pipe 7. When the third valve pipe 8 is opened, the impurities can be discharged;

[0056] Regarding the setting of the outer connecting pipe 9, it is located downstream of the filter net 5. When the inside of the filter pipe 3 needs to be deeply cleaned, the cover 10 is opened, and a high-pressure water pipe can be inserted into the filter pipe 3 from the outer connecting pipe 9, and then clean water is sprayed into it to deeply clean the filter pipe 3 and the filter net 5. Before cleaning, the first valve pipe 2 and the second valve pipe 4 can be closed, and the third valve pipe 8 can be opened at the same time, so as to avoid the dirt cleaned from entering other pipeline structures;

[0057] An opening is provided on the filter pipe 3, and a sealing plate 11 is provided. The position of the opening corresponds exactly to the position of the second transmission shaft 67. After removing the sealing plate 11, it is possible to better access and operate the second transmission shaft 67 and the cleaning part, including the installation and removal of the second transmission shaft 67, the cleaning and replacement of the first cleaning part and the second cleaning part, etc., which is conducive to the maintenance operation of the cleaning assembly 6; while in normal use, the opening is closed by the sealing plate 11 to keep the filter pipe 3 in a closed state and prevent the leakage of the medium.

[0058] The specific usage process of this device is as follows:

[0059] (1) During normal use;

[0060] During normal use, the medium flows through the filter pipe 3, which can exert a force on the impeller 63 to drive the impeller 63 to rotate. The rotation of the impeller 63 can drive the first transmission shaft 62 and the second transmission shaft 67 to rotate together; at this time, the arc-shaped plate 610 in the first cleaning part rotates together, and the inner wall of the arc-shaped plate 610 has a first brush 611, which is in direct contact with the filter net 5. Therefore, during rotation, the first brush 611 can be used to brush off the dirt attached to the filter net 5 to clean the filter net 5; at the same time, the spiral plate 612 in the second cleaning part also rotates together. A second brush 613 is provided at the outer edge position of the spiral plate 612, and the second brush 613 can contact the inner wall of the filter pipe 3. Therefore, during rotation, the second brush 613 can be used to brush off the dirt attached to the inner wall of the filter pipe 3 to clean the inner wall of the filter pipe 3; the impurities cleaned from the filter net 5 can enter the waste storage pipe 7, and the impurities cleaned from the inner wall of the filter pipe 3 will also enter the inside of the waste storage pipe 7 under the guiding action of the second brush 613, and the waste storage pipe 7 is used to collect the dirt.

[0061] (2) Deep cleaning of dirt;

[0062] When the device needs to be deeply cleaned, close the first valve pipe 2 and the second valve pipe 4, and at the same time open the third valve pipe 8 and the cover 10 of the closed external connection pipe 9. The high-pressure water pipe can be inserted into the filter pipe 3 from the external connection pipe 9, and then spray clean water into it. The clean water is used to wash the filter pipe 3 and the filter net 5 to deeply clean the filter pipe 3 and the filter net 5, and the sewage after cleaning will be discharged from the third valve pipe 8;

[0063] (3) Maintenance and repair of the cleaning assembly;

[0064] When maintenance operations need to be performed on the cleaning assembly 6, the sealing plate 11 can be directly removed, enabling better access to and operation of the second transmission shaft 67 and the cleaning unit, including the installation and removal of the second transmission shaft 67, the cleaning and replacement of the first cleaning unit and the second cleaning unit, etc., which is conducive to performing maintenance operations on the cleaning assembly 6; during normal use, the opening is closed by the sealing plate 11 to keep the filter pipe 3 in a closed state and prevent the leakage of the medium.

[0065] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A vacuum pump with good stability, comprising a vacuum pump body (1), characterized in that, It further includes: A filter tube (3), which is arranged at the input end of the vacuum pump body (1) and is fixedly connected to the vacuum pump body (1) through a first valve tube (2). The other end of the filter tube (3) is fixedly provided with a second valve tube (4); A filter net (5), which is hemispherical and fixed inside the filter tube (3). The convex surface of the filter net (5) faces the upstream direction inside the filter tube (3); A cleaning assembly (6), which is installed inside the filter tube (3). The cleaning assembly (6) includes a first cleaning part and a second cleaning part. The first cleaning part contacts the convex surface of the filter net (5), and the second cleaning part contacts the inner wall of the filter tube (3). During rotation, the dirt attached to the filter net (5) and the inner wall of the filter tube (3) is scraped off.

2. The well-stable vacuum pump according to claim 1, wherein The inner diameter of the filter tube (3) increases from the end connected to the first valve tube (2) to the end connected to the second valve tube (4).

3. The vacuum pump with good stability according to claim 1, characterized in that, The cleaning assembly (6) further includes a first fixing frame (61) and a second fixing frame (66) fixed inside the filter tube (3). The position of the first fixing frame (61) is close to the first valve tube (2), and the position of the second fixing frame (66) is close to the second valve tube (4); A first transmission shaft (62) is connected by a bearing to the first fixing frame (61). One end of the first transmission shaft (62) is fixedly provided with an impeller (63), and the first transmission shaft (62) also penetrates through the filter net (5); A second transmission shaft (67) is connected by a bearing to the second fixing frame (66). One end of the second transmission shaft (67) is detachably connected to one end of the first transmission shaft (62). The first cleaning part and the second cleaning part are both installed on the second transmission shaft (67).

4. The vacuum pump with good stability according to claim 3, characterized in that, The first cleaning part includes a plurality of arc-shaped plates (610) distributed in a circular shape and fixed to the circumferential outer wall of the second transmission shaft (67). The arc-shaped plates (610) are concentrically arranged outside the filter net (5). A first brush (611) contacting the filter net (5) is arranged on the inner side wall of the arc-shaped plate (610).

5. The vacuum pump with good stability according to claim 3, characterized in that, The second cleaning part includes a spiral plate (612) fixed to the second transmission shaft (67). A second brush (613) contacting the circumferential inner wall of the filter tube (3) is arranged on the outer edge of the spiral plate (612).

6. The vacuum pump with good stability according to claim 3, characterized in that, One end of the first transmission shaft (62) is fixedly provided with a first docking plate (64), and a hexagonal insert block (65) is fixed to one side of the first docking plate (64); while one end of the second transmission shaft (67) is fixedly provided with a second docking plate (68), and a hexagonal insert groove (69) is additionally provided on one side of the second docking plate (68). The hexagonal insert block (65) can be inserted into the hexagonal insert groove (69) to make the first docking plate (64) and the second docking plate (68) fit together and be fixed by bolts.

7. The vacuum pump with good stability according to claim 1, characterized in that, A waste storage tube (7) is also communicatively and fixedly connected to the outer side of the filter tube (3) near the filter net (5) for collecting the dirt cleaned from the filter net (5) and the inner wall of the waste storage tube (7). A third valve tube (8) is installed at the other end of the waste storage tube (7).

8. The vacuum pump with good stability according to claim 1, characterized in that, An external connecting pipe (9) is fixedly communicated and connected to the position of the circumferential outer wall of the filter pipe (3) close to the impeller (63), and a cover (10) is threadedly connected to the external connecting pipe (9).

9. The vacuum pump with good stability according to claim 1, wherein An opening is further provided at the position of the circumferential outer wall of the filter pipe (3) corresponding to the second transmission shaft (67), and a sealing plate (11) for closing the opening is fixedly bolted.

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