High-efficiency screw-type dry vacuum pump

Abstract

The invention relates to the technical field of vacuum pumps, in particular to a high-efficiency screw-type dry vacuum pump which comprises a pump body, the pump body is provided with an air inlet pipe, a filter screen used for filtering air is arranged between a first communicating cavity and a second communicating cavity, and driving parts driven by wind power are rotationally arranged in the first communicating cavity and the second communicating cavity. And a cleaning mechanism for cleaning the filter screen is arranged in the driving piece. Compared with the prior art, the filtering mechanism does not need to be manually cleaned, self-cleaning can be achieved, the overall operation efficiency of the device is improved, extra power is not needed in the period, driving is conducted only through gas in the gas inlet pipe, and the practicability of the device is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum pumps, in particular to a high-efficiency screw-type dry vacuum pump. Background Art

[0002] A screw dry vacuum pump is an efficient, reliable, and environmentally friendly vacuum-generating device. Its oil-free design, wide pumping speed range, low energy consumption, and strong adaptability have led to its widespread application in the semiconductor, chemical, and pharmaceutical industries. A screw dry vacuum pump utilizes a pair of synchronously counter-rotating screws to create multiple enclosed chambers within the pump casing. As the screws rotate, the volume of these enclosed chambers gradually changes, enabling the intake, compression, and discharge of gases.

[0003] The vacuum pump is provided with a suction pipe for sucking in the gas to be transported. However, during the use of the vacuum pump, there is a risk that some foreign matter in the gas will enter the pump body and affect the operation of the equipment. In the existing technology, a filter is usually used to filter the air, but the filter is easily clogged during use and needs to be manually cleaned, affecting the working efficiency of the vacuum pump. Summary of the Invention

[0004] The present invention provides a high-efficiency screw-type dry vacuum pump, which can overcome the defects of the prior art.

[0005] A high-efficiency screw dry vacuum pump according to the present invention comprises a pump body, wherein the pump body is provided with an air inlet pipe, and a filtering mechanism is provided at the air inlet pipe; The filter mechanism includes a first fixing ring provided at the air inlet pipe and a second fixing ring connected to the first fixing ring, wherein the first fixing ring and the second fixing ring have a first communicating cavity and a second communicating cavity communicated with the air inlet pipe; A filter screen for filtering gas is provided between the first communicating cavity and the second communicating cavity. A driving member driven by wind is provided for rotation inside the first communicating cavity and the second communicating cavity. A cleaning mechanism for cleaning the filter screen is provided inside the driving member.

[0006] Compared with the prior art, the filter mechanism of the present invention can achieve self-cleaning without manual cleaning, thereby improving the overall operating efficiency of the device. No additional power is required during the process, and it is driven only by the gas inside the intake pipe, which greatly improves the practicality of the device.

[0007] Preferably, a rotating cavity is provided at the first communicating cavity and the second communicating cavity, and the driving member includes a rotating portion rotatably arranged in the rotating cavity, and a clamping surface for clamping the filter screen is provided at the rotating portion.

[0008] In the present invention, the filter screen is pressed by two clamping surfaces arranged opposite to each other, and two driving members are fixed by bolts, thereby achieving the installation of the filter screen.

[0009] Preferably, an expansion ring is provided at one end of the outer wall of the rotating part away from the clamping surface, the expansion ring has a ventilation cavity connected to the air inlet pipe, and a plurality of air guide blades are evenly distributed on the inner wall of the ventilation cavity.

[0010] In the present invention, during use, the gas inside the first connecting cavity and the second connecting cavity enters the ventilation cavity and blows the multiple air guide blades, so that the driving member can automatically rotate in the rotating cavity, and the air guide blades of the two driving members after installation have the same inclination angle to achieve rotation in the same direction.

[0011] Preferably, a collection chamber is opened on the inner wall of the rotating part, and the collection chamber is annular. The first fixed ring and the second fixed ring are provided with a storage chamber connected to the rotating chamber. A plurality of discharge ports connected to the storage chamber are opened at equal distances on the inner wall of the collection chamber, and a storage element is provided in the storage chamber.

[0012] In the present invention, the cleaning mechanism will scrape the surface of the filter screen, and the scraped residue will fall into the collection chamber, and then enter the storage chamber through the discharge port, and be collected uniformly by the storage component. The storage component is installed in the storage chamber through conventional detachable connection methods such as bolts, and the collection chamber is close to one side of the filter screen and is inclined, which makes it more convenient to introduce the residue on the surface of the filter screen into the collection chamber, thereby achieving efficient collection.

[0013] Preferably, the inner walls of the first connecting cavity and the second connecting cavity have threaded cavities, and the cleaning mechanism includes a mounting ring arranged in the threaded cavity, a mounting portion is fixedly provided on the inner wall of the mounting ring, a plug-in cavity is penetrated through the mounting portion, an extension column is slidably arranged in the plug-in cavity, and a cleaning strip for contacting the surface of the filter screen is provided at the end of the extension column, and the cross-section of the cleaning strip is an inverted triangle.

[0014] In the present invention, the cleaning strip and the extension column are inserted into the plug-in cavity, and then the extension column and the mounting portion are fixed by screws. During the rotation of the filter screen, the cleaning strip can scrape the residue on its surface to clean the filter screen.

[0015] Preferably, the first fixing ring and the second fixing ring are formed by two oppositely arranged arc-shaped blocks that are engaged with each other, and the outer walls of the arc-shaped blocks are provided with fastening threads, and the outer walls of the fastening threads are detachably provided with fastening rings.

[0016] In the present invention, the spliced filter screen is first placed into any arc block, then clamped by two oppositely arranged arc blocks, and then the fastening ring is connected to the fastening thread to achieve the installation of the spliced filter screen and the combination of the first fixing ring and the second fixing ring themselves.

[0017] Preferably, a first fastening portion is provided on the outer walls of the first fixing ring and the second fixing ring, and a first fastening bolt for fixing the first fixing ring and the second fixing ring is provided inside the first fastening portion.

[0018] In the present invention, the first fastening bolt is driven into the first fastening portion to achieve an integral combination of the first fixing ring and the second fixing ring, thereby facilitating subsequent maintenance of the device.

[0019] Preferably, an extension block is provided on the outer wall of the first fixing ring and the second fixing ring. The extension block has a second fastening portion. The second fastening portion is provided with a second fastening bolt for connecting the multiple cleaning mechanisms.

[0020] In the present invention, the second fastening bolt is driven into the second fastening portion to achieve connection of multiple cleaning mechanisms, making it convenient to set up multiple layers of filter screens in the air intake pipe and improving the filtering effect.

[0021] Preferably, a positioning flange is provided at the end of the air intake pipe, and the plurality of cleaning mechanisms are detachably connected to the positioning flange via second fastening bolts.

[0022] In the present invention, multiple cleaning mechanisms are connected to the air intake pipe through the second fastening bolt, which not only makes it convenient for staff to adjust the number of filters according to actual usage, but also facilitates subsequent maintenance and disassembly, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the pump body in Example 1; Figure 2 Schematic diagram of the filtering mechanism in Example 1; Figure 3 is a schematic diagram of the second fastening bolt in Example 1; Figure 4 Schematic diagram of the arc block in Example 1; Figure 5 Schematic diagram of a side cross-section of the first fixing ring and the second fixing ring in Example 1; Figure 6 Schematic diagram of the fastening ring in Example 1; Figure 7 is a schematic diagram of the rotating part in Example 1; Figure 8 Schematic diagram of the installation ring in Example 1.

[0024] In the figure: 100, pump body; 110, air inlet pipe; 120, filter mechanism; 210, first fixing ring; 220, second fixing ring; 510, first connecting cavity; 520, second connecting cavity; 530, filter screen; 550, driving member; 540, cleaning mechanism; 560, rotating cavity; 551, rotating part; 552, clamping surface; 553, expansion ring; 554, ventilation cavity; 555, air guide blade; 556, collecting cavity; 610 , storage cavity; 557, discharge port; 611, storage element; 612, threaded cavity; 620, mounting ring; 810, mounting portion; 820, plug-in cavity; 830, extension column; 840, cleaning strip; 650, arc block; 651, fastening thread; 652, fastening ring; 310, first fastening portion; 320, first fastening bolt; 330, extension block; 340, second fastening portion; 350, second fastening bolt; 360, positioning flange. DETAILED DESCRIPTION

[0025] In order to further understand the content of the present invention, the present invention is described in detail with reference to the embodiments. It should be understood that the embodiments are merely for explanation of the present invention and are not intended to limit the present invention.

[0026] Example 1 like Figure 1 As shown, this embodiment provides a high-efficiency screw dry vacuum pump, which includes a pump body 100, the pump body 100 is provided with an air inlet pipe 110, and the air inlet pipe 110 is provided with a filtering mechanism 120; The filter mechanism 120 includes a first fixing ring 210 provided at the air inlet pipe 110 and a second fixing ring 220 connected to the first fixing ring 210 . The first fixing ring 210 and the second fixing ring 220 define a first communicating cavity 510 and a second communicating cavity 520 communicating with the air inlet pipe 110 . A filter 530 for filtering gas is provided between the first communicating cavity 510 and the second communicating cavity 520 . A driving member 550 driven by wind is provided for rotation inside the first communicating cavity 510 and the second communicating cavity 520 . A cleaning mechanism 540 for cleaning the filter 530 is provided inside the driving member 550 .

[0027] The present invention discloses a high-efficiency screw-type dry vacuum pump. During use, the extracted gas in the intake pipe 110 will be filtered by the filter 530 through the first connecting cavity 510 and the second connecting cavity 520, and the pump body 100 will drive the cleaning mechanism 540 on the driving member 550 to rotate during the suction process, thereby cleaning the filter 530. Compared with the prior art, the filter mechanism 120 of the present invention does not require manual cleaning and can achieve self-cleaning, thereby improving the overall operating efficiency of the device. No additional power is required during the process, and it is only driven by the gas inside the intake pipe 110, which greatly improves the practicality of the device.

[0028] Combine Figure 2 As shown, in this embodiment, a rotating chamber 560 is provided at the first connecting chamber 510 and the second connecting chamber 520, and the driving member 550 includes a rotating portion 551 rotatably arranged in the rotating chamber 560, and a clamping surface 552 for clamping the filter screen 530 is provided at the rotating portion 551; an expansion ring 553 is provided at one end of the outer wall of the rotating portion 551 away from the clamping surface 552, and the expansion ring 553 has a ventilation chamber 554 connected to the air inlet pipe 110, and a plurality of air guide blades 555 are evenly distributed on the inner wall of the ventilation chamber 554.

[0029] Through the above structure, when installing the device, the staff will set the two driving members 550 relative to each other, press the filter screen 530 through the two oppositely set clamping surfaces 552, and fix the two driving members 550 with bolts to achieve the installation of the filter screen 530; at the same time, the two installed driving members 550 are placed in the rotating chamber 560. During use, the internal gas of the first connecting chamber 510 and the second connecting chamber 520 enters the ventilation chamber 554 and blows the multiple air guide blades 555, so that the driving members 550 can automatically rotate in the rotating chamber 560, and the air guide blades 555 of the two installed driving members 550 have the same inclination angle to achieve rotation in the same direction.

[0030] Combine Figure 2-Figure 7 As shown, in this embodiment, a collection chamber 556 is opened on the inner wall of the rotating part 551, and the collection chamber 556 is annular. The first fixed ring 210 and the second fixed ring 220 are provided with a storage chamber 610 connected to the rotating chamber 560. A plurality of discharge ports 557 connected to the storage chamber 610 are opened at equal distances on the inner wall of the collection chamber 556, and a storage element 611 is provided in the storage chamber 610.

[0031] Through the above structure, during the rotation of the filter 530, the cleaning mechanism 540 will scrape the surface of the filter 530, and the scraped residue will fall into the collection chamber 556, and then enter the storage chamber 610 through the discharge port 557, and be uniformly collected by the storage component 611. The storage component 611 is installed in the storage chamber 610 through conventional detachable connection methods such as bolts, and the collection chamber 556 is close to one side of the filter 530 and is inclined, which makes it more convenient to introduce the residue on the surface of the filter 530 into the collection chamber 556 to achieve efficient collection.

[0032] Combine Figure 2-Figure 8As shown, in this embodiment, the inner walls of the first connecting cavity 510 and the second connecting cavity 520 have a threaded cavity 612, and the cleaning mechanism 540 includes a mounting ring 620 arranged in the threaded cavity 612, and a mounting portion 810 is fixedly provided on the inner wall of the mounting ring 620, and an inserting cavity 820 is penetrated by the mounting portion 810, and an extension column 830 is slidably provided in the inserting cavity 820, and a cleaning strip 840 for contacting the surface of the filter 530 is provided at the end of the extension column 830, and the cross-section of the cleaning strip 840 is an inverted triangle.

[0033] Through the above structure, the mounting ring 620 is connected to the threaded cavity 612, the cleaning strip 840 and the extension column 830 are inserted into the plug-in cavity 820, and then the extension column 830 and the mounting portion 810 are limited and fixed by screws. During the rotation of the filter screen 530, the cleaning strip 840 can scrape off the residue on its surface to clean the filter screen 530.

[0034] Combine Figure 1-Figure 7 As shown, in this embodiment, the first fixing ring 210 and the second fixing ring 220 are composed of two oppositely arranged arc blocks 650 that are engaged with each other, and the outer wall of the arc block 650 is provided with a fastening thread 651, and the outer wall of the fastening thread 651 is detachably provided with a fastening ring 652; the outer walls of the first fixing ring 210 and the second fixing ring 220 are provided with a first fastening part 310, and the first fastening part 310 is provided with a first fastening bolt 320 for fixing the first fixing ring 210 and the second fixing ring 220 to be fixedly connected.

[0035] Through the above structure, before fixing the first fixing ring 210 and the second fixing ring 220, the spliced filter screen 530 is first placed in any arc block 650, and then engaged through two oppositely arranged arc blocks 650, and then the fastening ring 652 is connected to the fastening thread 651 to realize the installation of the spliced filter screen 530 and the combination of the first fixing ring 210 and the second fixing ring 220 themselves; at the same time, the first fastening bolt 320 is driven into the first fastening part 310 to realize the overall combination of the first fixing ring 210 and the second fixing ring 220, which is convenient for subsequent maintenance of the device.

[0036] Combine Figure 1-Figure 7 As shown, in this embodiment, an extension block 330 is provided on the outer wall of the first fixing ring 210 and the second fixing ring 220, and the extension block 330 has a second fastening portion 340. The second fastening portion 340 is provided with a second fastening bolt 350 for connecting multiple cleaning mechanisms 540; a positioning flange 360 is provided at the end of the intake pipe 110, and multiple cleaning mechanisms 540 are detachably connected to the positioning flange 360 through the second fastening bolt 350.

[0037] Through the above structure, multiple cleaning mechanisms 540 are arranged and placed, and then the second fastening bolt 350 is driven into the second fastening part 340 to realize the connection of multiple cleaning mechanisms 540, which is convenient for setting multiple layers of filter screens 530 in the air intake pipe 110 to improve the filtering effect; at the same time, a positioning flange 360 is welded at the end of the air intake pipe 110, and the multiple cleaning mechanisms 540 can be connected to the air intake pipe 110 through the second fastening bolt 350, which is convenient for the staff to adjust the number of filter screens 530 according to actual usage, and is convenient for subsequent maintenance and disassembly, thereby improving the applicability of the device.

[0038] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of this template.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as limiting the present invention. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A high-efficiency screw dry vacuum pump, characterized in that: The pump body (100) is provided with an air inlet pipe (110), and a filtering mechanism (120) is provided at the air inlet pipe (110); The filtering mechanism (120) comprises a first fixing ring (210) provided at the air inlet pipe (110) and a second fixing ring (220) connected to the first fixing ring (210); the first fixing ring (210) and the second fixing ring (220) have a first communicating cavity (510) and a second communicating cavity (520) communicating with the air inlet pipe (110); A filter screen (530) for filtering gas is provided between the first communicating cavity (510) and the second communicating cavity (520). A driving member (550) driven by wind power is rotatably provided inside the first communicating cavity (510) and the second communicating cavity (520). A cleaning mechanism (540) for cleaning the filter screen (530) is provided inside the driving member (550).

2. A high-efficiency screw dry vacuum pump according to claim 1, characterized in that: A rotating cavity (560) is provided between the first connecting cavity (510) and the second connecting cavity (520). The driving member (550) comprises a rotating portion (551) rotatably arranged in the rotating cavity (560). A clamping surface (552) for clamping the filter screen (530) is provided on the rotating portion (551).

3. A high-efficiency screw dry vacuum pump according to claim 2, characterized in that: An expansion ring (553) is provided at one end of the outer wall of the rotating portion (551) away from the clamping surface (552). The expansion ring (553) has a ventilation cavity (554) connected to the air inlet pipe (110). A plurality of air guide blades (555) are evenly distributed on the inner wall of the ventilation cavity (554).

4. A high-efficiency screw dry vacuum pump according to claim 3, characterized in that: A collecting chamber (556) is provided on the inner wall of the rotating portion (551), and the collecting chamber (556) is annular. A storage chamber (610) communicating with the rotating chamber (560) is provided at the first fixed ring (210) and the second fixed ring (220). A plurality of discharge ports (557) communicating with the storage chamber (610) are provided at equal intervals on the inner wall of the collecting chamber (556), and a storage element (611) is provided in the storage chamber (610).

5. A high-efficiency screw dry vacuum pump according to claim 4, characterized in that: The inner walls of the first connecting cavity (510) and the second connecting cavity (520) are provided with a threaded cavity (612). The cleaning mechanism (540) includes a mounting ring (620) disposed in the threaded cavity (612). A mounting portion (810) is fixedly provided on the inner wall of the mounting ring (620). A plug-in cavity (820) is provided through the mounting portion (810). An extension column (830) is slidably provided in the plug-in cavity (820). A cleaning strip (840) for contacting the surface of the filter screen (530) is provided at the end of the extension column (830), and the cross-section of the cleaning strip (840) is in the shape of an inverted triangle.

6. A high-efficiency screw dry vacuum pump according to claim 1, characterized in that: The first fixing ring (210) and the second fixing ring (220) are formed by engaging two oppositely arranged arc-shaped blocks (650), and the outer wall of the arc-shaped block (650) is provided with a fastening thread (651), and the outer wall of the fastening thread (651) is detachably provided with a fastening ring (652).

7. A high-efficiency screw dry vacuum pump according to claim 6, characterized in that: A first fastening portion (310) is provided on the outer walls of the first fixing ring (210) and the second fixing ring (220), and a first fastening bolt (320) for fixedly connecting the first fixing ring (210) and the second fixing ring (220) is provided inside the first fastening portion (310).

8. A high-efficiency screw dry vacuum pump according to claim 7, characterized in that: An extension block (330) is provided on the outer walls of the first fixing ring (210) and the second fixing ring (220). The extension block (330) has a second fastening portion (340). The second fastening portion (340) is provided with a second fastening bolt (350) for connecting the plurality of cleaning mechanisms (540).

9. A high-efficiency screw dry vacuum pump according to claim 8, characterized in that: A positioning flange (360) is provided at the end of the air inlet pipe (110), and a plurality of cleaning mechanisms (540) are detachably connected to the positioning flange (360) via second fastening bolts (350).

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