Environment-friendly vacuum energy-saving pump

Abstract

The application discloses an environment-friendly vacuum energy-saving pump, and relates to the technical field of vacuum energy-saving pumps, which comprises a screw vacuum pump, an exhaust port is arranged on the screw vacuum pump, a sound attenuation assembly for reducing air transmission sound is arranged on the exhaust port, a pull-out plate for collecting substances inside the sound attenuation assembly is arranged on the sound attenuation assembly, and a sealing element tightly combined with the sound attenuation assembly is arranged on the pull-out plate. The environment-friendly vacuum energy-saving pump can collect and conveniently take out oil-gas mixture, solid particle, condensed liquid and sound-absorbing material fragments and other substances deposited inside the sound attenuation assembly after the screw vacuum pump stops running, and the maintainability and cleaning efficiency of the equipment are remarkably improved. Meanwhile, the sealing element is arranged on the pull-out plate and can be tightly combined with the inner wall of the sound attenuation assembly, so that the sealing performance of the airflow channel is ensured, and the noise reduction effect and the stability of system operation are improved.

Description

Technical Field

[0001] This invention relates to the field of vacuum energy-saving pump technology, specifically to an environmentally friendly vacuum energy-saving pump. Background Technology

[0002] In industrial production, vacuum pumps are widely used as key equipment in various fields such as chemical engineering, metallurgy, electronics, and food processing. Among them, screw vacuum pumps are widely used due to their advantages such as compact structure, stable operation, and wide pumping speed range.

[0003] A dry screw vacuum pump with a silencer is disclosed in CN211950868U. The pump includes a base and a screw vacuum pump mounted on the base. The screw vacuum pump has an inlet and an outlet. It is connected to an electric motor and driven by the motor to continuously draw in, compress, and expel the pumped gas to form a high vacuum. A water-cooled or air-cooled silencer is installed at the outlet. This dry screw vacuum pump with a silencer, by using a water-cooled silencer at the outlet, not only reduces noise but also cools the compressed air. Using an air-cooled silencer at the outlet causes the airflow to undergo a labyrinthine recirculation within the silencer, effectively suppressing the impact force of the airflow and significantly reducing the noise of the screw vacuum pump.

[0004] However, most existing noise reduction components adopt a structure with internal sound-absorbing material filling. Although they can reduce noise to a certain extent, their internal structure is complex and their spatial layout is dense, making them difficult to clean.

[0005] Especially when dealing with oil mist, dust, or condensable gases (such as water vapor), the oil, particulate matter, or condensate carried in the exhaust can easily deposit inside the silencer components. After long-term use, this can easily cause blockage, corrosion, or even failure, affecting the normal operation and service life of the equipment.

[0006] Therefore, we propose an environmentally friendly vacuum energy-saving pump. Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this invention provides an environmentally friendly, energy-saving vacuum pump that can effectively solve the problems described in the background section.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an environmentally friendly vacuum energy-saving pump, comprising a screw vacuum pump, wherein the screw vacuum pump is provided with an exhaust port, and the exhaust port is provided with a silencing component for reducing air-transmitted sound. The silencing component is provided with a pull-out plate for collecting the internal material of the silencing component, and the pull-out plate is provided with a sealing element that fits tightly with the silencing component. A first partition circular plate and a second partition circular plate are fixedly connected inside an annular shell. The first partition circular plate, the second partition circular plate, and the annular shell are respectively provided with concave arc grooves. The number of sealing elements is the same as the number of concave arc grooves. A limiting slide plate is provided on the annular shell, and the limiting slide plate is provided with a sliding mechanism that allows the pull-out plate to slide linearly. The pull-out plate has a sliding block fixedly connected to it, which matches the cross-section of the sliding groove. The pull-out plate also has a control component for driving the sealing element and the sound-absorbing component to seal. The sealing element includes two triangular partitions on the pull-out plate. The top of the two triangular partitions is detachably connected to sound-absorbing cotton. A double-sided bracket and a rotating cylinder are arranged between the two triangular partitions. A connecting bracket is slidably connected to the double-sided bracket. A movable roller is provided on the connecting bracket. The movable roller can move in an eccentric annular groove opened on the rotating cylinder. The connecting bracket is connected to the bottom of the sound-absorbing cotton. The control component includes a rotating rod that passes through the pull-out plate, the triangular partitions and the rotating cylinder. An operating wheel is provided on the rotating rod.

[0011] Furthermore, the silencing assembly includes an annular housing, on which an air inlet and an air outlet are provided. A connecting pipe 1 is provided through the air inlet and the air outlet. The connecting pipe of the air inlet is detachably connected to the air outlet. A first dividing plate and a second dividing plate divide the inner cavity of the annular housing into several expansion chambers. A second connecting pipe is provided on the first dividing plate. A third connecting pipe coaxial with the connecting pipe of the air outlet is provided through the second dividing plate.

[0012] Furthermore, the operating wheel is equipped with a telescopic component, and the outer side of the pull-out plate is provided with an annular limiting groove that matches the telescopic component.

[0013] Furthermore, the telescopic component includes a rectangular block with an elastic groove, a telescopic rod extending through the rectangular block, a limit ring on the telescopic rod, and an elastic element between the limit ring and the elastic groove.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides an environmentally friendly vacuum energy-saving pump, which has the following beneficial effects:

[0016] This invention provides an environmentally friendly vacuum energy-saving pump with an optimized silencing component at the exhaust port. Inside this component is a pull-out cleaning structure for collecting various residual substances generated during operation. The pull-out plate is located at the bottom of the silencing component's inner cavity and can effectively collect oil-gas mixtures, solid particles, condensate, and sound-absorbing material fragments that enter the silencing component during screw vacuum pump operation. When the equipment stops running, the operator can use the limiting slide plate to horizontally pull out the pull-out plate along the sliding groove, thereby achieving convenient cleaning of internal deposits and significantly improving the maintainability and cleaning efficiency of the device.

[0017] Driven by the control components, the sound-absorbing cotton can be fitted or separated from the concave arc groove. Under normal operating conditions, the seal is tightly fitted to the surface of the concave arc groove to ensure the airflow channel is sealed, thereby improving the overall sound insulation effect. When it is necessary to clean or replace the sound-absorbing material, the seal is separated from the concave arc groove by the control components, releasing the seal and allowing the pull plate to be smoothly pulled out in the sliding groove for easy cleaning and maintenance. Attached Figure Description

[0018] Figure 1 Schematic diagram of the overall structure of the environmentally friendly vacuum energy-saving pump provided by the present invention Figure 1 ;

[0019] Figure 2 Schematic diagram of the overall structure of the environmentally friendly vacuum energy-saving pump provided by the present invention Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the overall structure of the noise reduction component provided by the present invention;

[0021] Figure 4 for Figure 3 An enlarged schematic diagram of A shown;

[0022] Figure 5 for Figure 4 A partial structural cross-sectional view of the control component shown;

[0023] Figure 6 Schematic cross-sectional view of the noise reduction component provided by the present invention Figure 1 ;

[0024] Figure 7 Schematic cross-sectional view of the noise reduction component provided by the present invention Figure 2 ;

[0025] Figure 8 for Figure 7 An enlarged schematic diagram of B is shown below;

[0026] Figure 9 Schematic cross-sectional view of the noise reduction component provided by the present invention Figure 3 ;

[0027] Figure 10 for Figure 9 An enlarged schematic diagram of C is shown below;

[0028] Figure 11 This is a schematic diagram of the structure of the pull-out plate provided by the present invention;

[0029] Figure 12 for Figure 11 An enlarged schematic diagram of D is shown below;

[0030] Figure 13 This is a schematic diagram of the structure of the sealing element provided by the present invention;

[0031] Figure 14 A schematic diagram showing the disassembled structure of the seal provided by the present invention.

[0032] The diagram is labeled as follows: 1. Screw vacuum pump; 2. Exhaust port; 3. Annular housing; 4. Air blowing port; 5. Air outlet; 6. Connecting pipe one; 7. Dividing circular plate one; 8. Connecting pipe two; 9. Dividing circular plate two; 10. Connecting pipe three; 11. Expansion chamber; 12. Concave arc groove; 13. Limiting slide plate; 14. Sliding groove; 15. Pull-out plate; 16. Sliding block; 17. Triangular partition; 18. Sound-absorbing cotton; 19. Double-sided bracket; 20. Rotating cylinder; 21. Eccentric ring groove; 22. Connecting bracket; 23. Movable roller; 24. Rotating rod; 25. Operating wheel; 26. Annular limiting groove; 27. Rectangular block; 28. Telescopic rod; 29. ​​Elastic groove; 30. Limiting ring; 31. Elastic element. Detailed Implementation

[0033] To make the technical means, creative features, and achieved objectives and effects of this invention readily understandable, the invention will be further described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] To address the shortcomings of existing technologies, such as Figure 1-14 As shown, the present invention provides an environmentally friendly vacuum energy-saving pump, including a screw vacuum pump 1, an exhaust port 2 on the screw vacuum pump 1, a silencing component for reducing the sound transmitted through the air on the exhaust port 2, a pull-out plate 15 for collecting the material inside the silencing component on the silencing component, a sealing element that fits tightly with the silencing component on the pull-out plate 15, and a partition circular plate 7 and a partition circular plate 9 fixedly connected inside the annular housing 3.

[0035] It should be noted that an optimized silencing component is installed at the exhaust port, and a pull-out cleaning structure is set inside the component to collect various residual substances generated during operation. The pull-out plate is located at the bottom of the inner cavity of the silencing component, which can effectively collect oil-gas mixture, solid particles, condensate, and sound-absorbing material fragments that enter the silencing component when the screw vacuum pump is running. When the equipment stops running, the operator can pull out the pull-out plate horizontally along the sliding groove through the limit slide plate, thereby realizing convenient cleaning of internal deposits, which significantly improves the maintainability and cleaning efficiency of the device.

[0036] In this embodiment, as Figure 1 , 2 As shown in figures 3, 6, 7, 8, and 9, the silencing assembly includes an annular housing 3. The annular housing 3 has an air inlet 4 and an air outlet 5. Two connecting pipes 6 are fixedly connected to the air inlet 4 and the air outlet 5, respectively, and extend into the inner cavity of the annular housing 3 through the air inlet 4 and the air outlet 5. The connecting pipe of the air inlet 4 and the air outlet 2 are respectively provided with internal and external threads, allowing for a threaded connection between the connecting pipe of the air inlet 4 and the air outlet 2. Figure 6 As shown, the first dividing circular plate 7 and the second dividing circular plate 9 divide the inner cavity of the annular shell 3 into expansion chamber 1, expansion chamber 2, and expansion chamber 3 from left to right. A connecting pipe 2 8 is fixedly connected to the first dividing circular plate 7 at a position away from its axial direction. A connecting pipe 3 10, coaxial with the connecting pipe 6 at the air outlet 5, is fixedly installed and passes through the second dividing circular plate 9. In this embodiment, as... Figure 6 , 7 As shown in Figures 9 and 10, concave arc grooves 12 are respectively provided on the first partition circular plate 7, the second partition circular plate 9, and the annular shell 3. The number of sealing elements is the same as that of the concave arc grooves 12. A limiting slide plate 13 is provided on the annular shell 3. A sliding groove 14 is provided on the limiting slide plate 13 to allow the pull plate 15 to slide linearly. A sliding block 16 that matches the cross section of the sliding groove 14 is fixedly connected to the pull plate 15. The sliding block 16 can slide along the inner wall of the sliding groove 14. It should be noted that the following situations may occur inside the silencer: When the screw vacuum pump 1 is connected to the silencer, if the pump body uses lubricating oil or the gas being pumped contains oil mist, some oil and gas may enter the silencer with the airflow and form residue inside; when processing gas containing dust or particulates, particles that are not completely filtered may deposit inside the silencer, especially at the turning points of the airflow channel or in the pores of the sound-absorbing cotton 18; when the gas being pumped contains condensable vapors (such as water vapor), the gas may condense inside the silencer due to temperature changes or pressure reduction, forming liquid residue; after long-term use, the sound-absorbing cotton 18 or porous material inside the silencer may break due to airflow erosion or high-temperature aging, producing fine fibers or particles.

[0037] By setting the limiting slide plate 13, the pull plate 15 can slide horizontally in the sliding groove 14 in the untriggered or detriggered state. This allows the oil-gas mixture, solid particles, condensate, and silencing material fragments generated by the screw vacuum pump 1 during operation to enter the annular housing 3. After the screw vacuum pump 1 has run, the air resistance on the annular housing 3 disappears, and it falls onto the pull plate 15 by gravity. The pull plate 15 then slides out on the sliding groove 14 to clean it, thus solving the problem of the existing silencing components being difficult to clean due to their complex internal structure.

[0038] In this embodiment, as Figures 11 to 14 As shown, the pull-out plate 15 is also equipped with a control component for driving the sealing element and the sound-absorbing component to seal. The sealing element includes two triangular partitions 17 fixedly connected to the top of the pull-out plate 15. The two ends of the top of the two triangular partitions 17 are detachably connected to the sound-absorbing cotton 18 by screws. A double-sided bracket 19 is fixedly connected from top to bottom between the two triangular partitions 17 and a rotating cylinder 20 is rotatably connected. A vertical groove is opened on the double-sided bracket 19. A connecting bracket 22 is slidably connected in the vertical groove. A movable roller 23 is provided on the connecting bracket 22. The movable roller 23 can move in the eccentric ring groove 21 opened on the rotating cylinder 20. The eccentric ring groove 21 is opened at a position away from the center of the rotating cylinder 20, which is intended to drive the movable roller 23 to reciprocate. The end of the connecting bracket 22 away from the movable roller 23 is detachably connected to the bottom of the sound-absorbing cotton 18 by screws.

[0039] It should be noted that the sound-absorbing cotton 18 is a two-component sound-absorbing cotton 18 with polyester and rubber base material, which has better tensile properties. The two ends of the bottom of the sound-absorbing cotton 18 extend to the space between the two triangular partitions 17. When the sound-absorbing cotton 18 is stretched, the sound-absorbing cotton 18 at both ends of the bottom will cover the gap at both ends of the bottom after stretching, thereby reducing sound transmission.

[0040] In this embodiment, as Figure 4 , 5As shown in 13 and 14, the control component includes a rotating rod 24, which passes through the pull-out plate 15, the triangular partition 17, and the rotating cylinder 20. The rotating rod 24 is rotatably connected to the pull-out plate 15 and the triangular partition 17 via bearings. The rotating rod 24 is coaxially fixed to the rotating cylinder 20. The rotating rod 24 extends out of the pull-out plate 15 and is fixedly connected to an operating wheel 25. The operating wheel 25 is provided with a telescopic component. The outer side of the pull-out plate 15 is provided with an annular limiting groove 26 adapted to the telescopic component. The telescopic component includes a rectangular block 27, which is fixedly connected to the outer wall of the operating wheel 25. An elastic groove 29 is provided on the rectangular block 27. A telescopic rod 28 passes through the rectangular block 27. A limiting ring 30 is provided on the telescopic rod 28. A sliding head and a pressing head are fixedly connected to the two ends of the limiting ring 30, respectively. An elastic element 31 is provided between the limiting ring 30 and the elastic groove 29. The elastic element 31 can be a spring or other element that provides a reset function.

[0041] It should be noted that by applying pressure to the pressing head, the pressing head drives the telescopic rod 28, the limiting ring 30, and the sliding head to slide linearly. The limiting ring 30 applies a squeezing force to the spring, and at the same time, the sliding head enters the annular limiting groove 26. At this time, the operating wheel 25 is rotated to rotate the sliding head to the other side of the annular limiting groove 26. During this process, the operating wheel 25 drives the rotating rod 24 to rotate, and the rotating rod 24 drives the rotating cylinder 20 to rotate. After the rotating cylinder 20 rotates, the distance from the axis to the edge of the eccentric annular groove 21 changes. The movable roller 23 slides vertically upward on the double-sided bracket 19 through the change in the distance of the eccentric annular groove 21, thereby driving the sound-absorbing cotton 18 at the top to move upward and fit tightly into the concave arc groove 12. After rotating 180 degrees, by canceling the pressure applied to the pressing head, the operating wheel 25 can be axially limited, realizing the sound isolation of expansion chamber 11-1, expansion chamber 11-2, and expansion chamber 11-3.

[0042] The working principle provided by this invention is as follows: During installation, the operator first aligns the sliding block 16 fixed at the bottom of the pull-out plate 15 with the sliding groove 14 on the limiting slide plate 13, and pushes it horizontally along the direction of the sliding groove 14 until the sliding block 16 reaches the end position of the sliding groove 14. At this time, the pull-out plate 15 has completely entered the interior of the annular housing 3, and each sealing element is located directly below the first dividing circular plate 7, the second dividing circular plate 9, and each concave arc groove 12 on the annular housing 3, preparing for subsequent sealing actions. Subsequently, by manually pressing the pressing head in the telescopic component provided on the outside of the operating wheel 25, the telescopic rod 28 drives the limiting ring 30 and the sliding head to move in a straight line, compressing the elastic element 31 and moving the sliding head into the annular limiting groove 26. At this time, the operating wheel 25 is rotated, causing the sliding head to rotate along the trajectory of the annular limiting groove 26 to the designated position on the other side. During this process, the operating wheel 25 drives the rotating rod 24 to rotate synchronously through the through structure, thereby driving the rotating cylinder 20, which is fixed coaxially with it, to rotate. Because the rotating cylinder 20 has an eccentric annular groove 21, the movable roller 23 slides in its groove. When the rotating cylinder 20 rotates, the relative position between the eccentric annular groove 21 and the movable roller 23 changes, causing the connecting bracket 22 to slide upward in the vertical sliding groove of the double-sided bracket 19, thereby driving the sound-absorbing cotton 18 fixedly connected at the top to rise synchronously, and finally stick tightly to the surface of the concave arc groove 12 of the annular shell 3. After the operating wheel 25 completes a 180-degree rotation, it releases the force on the pressing head, and the elastic element 31 rebounds and resets, so that the sliding head is stably embedded in the locking position of the annular limiting groove 26. At this time, the operating wheel 25 is axially limited, and the seal maintains a tight fit with the concave arc groove 12, forming a complete airflow channel sealing structure. Each seal isolates the expansion chamber one, expansion chamber two, and expansion chamber three respectively, ensuring the noise reduction performance and sealing reliability during the operation of the device.

[0043] During equipment shutdown and maintenance, if cleaning of the internal components of the silencing assembly is required, the reverse operation should be performed: press the pressing head of the telescopic component again to compress the elastic element, causing the sliding head to disengage from the locked position of the annular limiting groove 26; then rotate the operating wheel 25 in the reverse direction to lower the entire sealing component, causing the silencing cotton 18 to separate from the concave arc groove 12 and release the seal. Afterward, smoothly pull out the pull plate 15 along the sliding groove 14 to centrally clean the oil-gas mixture, solid particles, condensate, and residual substances such as aging and detached silencing material fragments deposited on the pull plate 15.

[0044] This structural design enables effective switching between sealing and cleaning functions, which not only improves the ease of operation and maintainability of the equipment, but also ensures good airtightness and noise reduction, making it highly practical and worthy of promotion.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An environment-friendly vacuum energy-saving pump, comprising a screw vacuum pump (1), an exhaust port (2) is arranged on the screw vacuum pump (1), and a silencing assembly for reducing air transmission sound is arranged on the exhaust port (2), characterized in that: The sound-absorbing assembly is provided with a pull-out plate (15) for collecting substances inside the sound-absorbing assembly, the pull-out plate (15) is provided with a sealing element closely fitted with the sound-absorbing assembly, a separation disc one (7) and a separation disc two (9) are fixedly connected inside the annular shell (3), the separation disc one (7), the separation disc two (9) and the annular shell (3) are respectively provided with an inner concave arc groove (12), the number of the sealing element is the same as that of the inner concave arc groove (12), the annular shell (3) is provided with a limiting sliding plate (13), the limiting sliding plate (13) is provided with a sliding groove (14) for enabling the pull-out plate (15) to linearly slide, the pull-out plate (15) is fixedly connected with a sliding block (16) matched with the cross section of the sliding groove (14), the pull-out plate (15) is further provided with a control element for driving the sealing element to seal with the sound-absorbing assembly, the sealing element comprises two triangular partition plates (17) provided on the pull-out plate (15), the top of the two triangular partition plates (17) is detachably connected with sound-absorbing cotton (18), a double-sided support (19) and a rotating cylinder (20) are arranged between the two triangular partition plates (17), the double-sided support (19) is slidably connected with a connecting support (22), the connecting support (22) is provided with a movable roller (23), the movable roller (23) is movable in an eccentric ring groove (21) formed in the rotating cylinder (20), and the connecting support (22) is connected with the bottom of the sound-absorbing cotton (18), the control element comprises a rotating rod (24), the rotating rod (24) penetrates through the pull-out plate (15), the triangular partition plate (17) and the rotating cylinder (20), and the rotating rod (24) is provided with an operation rotating wheel (25).

2. The environment-friendly vacuum energy-saving pump according to claim 1, characterized in that: The sound-absorbing assembly comprises an annular shell (3), the annular shell (3) is provided with a blowing port (4) and an air outlet (5), the blowing port (4) and the air outlet (5) are provided with a connecting pipe one (6) penetrating therethrough, the connecting pipe of the blowing port (4) is detachably connected with the air outlet (2), the separation disc one (7) and the separation disc two (9) separate the inner cavity of the annular shell (3) into a plurality of expansion chambers (11), the separation disc one (7) is provided with a connecting pipe two (8), and the separation disc two (9) is provided with a connecting pipe three (10) penetrating therethrough and coaxial with the connecting pipe one (6) of the air outlet (5).

3. The environment-friendly vacuum energy-saving pump according to claim 1, characterized in that: The operation rotating wheel (25) is provided with an extension element, and the outer side of the pull-out plate (15) is provided with an annular limiting groove (26) matched with the extension element.

4. The environment-friendly vacuum energy-saving pump according to claim 3, characterized in that: The extension element comprises a rectangular block (27), the rectangular block (27) is provided with an elastic groove (29), the rectangular block (27) is provided with an extension rod (28) penetrating therethrough, the extension rod (28) is provided with a limiting ring (30), and an elastic element (31) is arranged between the limiting ring (30) and the elastic groove (29).

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