Low noise reaction kettle screw pump

Abstract

The utility model discloses a low noise reation kettle screw rod pump, including base, the top of base is installed with screw rod pump, the outer wall of screw rod pump is equipped with sound insulation component, sound insulation component includes sound insulation board, the outer wall of sound insulation board is provided with the damper sound insulation felt, the outer wall of damper sound insulation felt is provided with the sound absorption cotton. The device is through " physical separation + initiative noise reduction " collaborative design, and the sound insulation board breaks down the noise superposition of pump body and motor, avoids the formation of wideband composite noise, and the noise collector of both sides accurately captures two kinds of sound source characteristics, and the directional emission of loudspeaker counteracts the core noise of opposite phase sound wave, and the comprehensive noise reduction effect is remarkable and lower than the industrial limit value, and effectively protects the health of operating personnel.

Description

Technical Field

[0001] This utility model relates to the field of screw pump technology, specifically a low-noise reactor screw pump. Background Technology

[0002] As a key piece of equipment in industries such as chemical, pharmaceutical, and food processing for conveying high-viscosity media containing particles, the operational stability and environmental friendliness of reactor screw pumps directly affect production efficiency and operator health. However, in actual operation, the noise problem of reactor screw pumps remains a critical technical challenge that urgently needs to be addressed within the industry.

[0003] Currently, the noise of screw pumps in reactors mainly originates from two core components: first, the pump body itself, where the meshing friction between the screw and the pump casing, turbulence in the fluid flow channel, and pressure pulsations generate mechanical and fluid noise. This is especially pronounced when conveying high-viscosity media, as the shearing action between the screw teeth exacerbates high-frequency noise. Second, the drive motor, where electromagnetic vibrations, rotor-bearing friction, and aerodynamic noise from the cooling fan create a continuous low-frequency noise source. Since the pump body and motor are typically rigidly connected or arranged close together, these two types of noise superimpose during propagation, forming a broadband composite noise with a sound pressure level often reaching 85-110 dB, far exceeding the noise limits for industrial sites (GBZ 2.2-2007 stipulates an industrial noise limit of 85 dB). Long-term exposure can lead to hearing damage for operators, and the vibrations caused by the noise can also affect the operational accuracy of peripheral equipment such as reactors. To reduce noise, existing technologies mainly employ passive noise reduction methods: for example, adding a soundproof cover to the outside of the pump body, using multiple layers of materials to reflect or absorb noise, but the fully enclosed structure can affect equipment heat dissipation and routine maintenance; or installing vibration damping pads at the connection between the pump body and the motor to reduce vibration transmission, but this is only effective for low-frequency vibrations and has limited effect on high-frequency noise such as fluid turbulence. In addition, some solutions attempt to optimize the screw tooth profile or pump casing flow channel to reduce internal noise sources, but this requires precision machining of core components, resulting in higher costs and limited adaptability (noise characteristics vary greatly under different media viscosities). In summary, the existing technology lacks targeted treatment for the two independent noise sources, the pump body and the motor, which makes it more difficult to control the noise of the two when they are mixed, causing many problems. Therefore, based on the above shortcomings, a low-noise reactor screw pump is introduced to improve this. Utility Model Content

[0004] The purpose of this invention is to provide a low-noise reactor screw pump to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-noise reactor screw pump, including a base, a screw pump installed at the top of the base, and a sound insulation component sleeved on the outer wall of the screw pump; The sound insulation component includes a sound insulation board, on the outer wall of the sound insulation board is a damping sound insulation felt, and on the outer wall of the damping sound insulation felt is a sound-absorbing cotton. The inner circumference of the sound insulation component is provided with a sealing rubber ring that fits against the outer wall of the screw pump.

[0006] Preferably, loudspeakers are provided on both the front and rear sides of the inner wall of the sound insulation component from left to right; guide rods are provided on both the front and rear sides of the inner cavity of the base; bases are fitted on both the left and right sides of the outer wall of the guide rods; cylinders are screwed to both the left and right sides of the inner cavity of the base; the output end of the cylinder is fixedly connected to the outer wall of the base; one end of a support rod is provided on both the front and rear sides of the top of the base; the other end of the support rod extends out of the upper surface of the base and is equipped with a noise collector.

[0007] Preferably, the number of speakers is several, and the distance between every two speakers is 15cm.

[0008] Preferably, the loudspeaker and the noise collector are electrically connected to each other.

[0009] Preferably, the sound insulation component is arranged in an "I" shape.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the low-noise reactor screw pump can separate the pump body and motor on the screw pump through the sound insulation component, and the semi-enclosed form can better block the superposition and propagation of noise. Through the cooperation between the guide rod, base, cylinder, support rod and noise collector, noise at different positions on the screw pump can be detected. The speaker can emit a sound with the same amplitude but opposite phase as the noise, which interferes and cancels out the original noise. This device, through a collaborative structural design of "physical separation + active noise reduction," offers the following advantages compared to existing technologies: 1. Effectively reduces composite noise, breaking through the bottleneck of traditional noise reduction. The sound insulation panel can directly block the noise superposition path between the pump body (high-frequency fluid / mechanical noise) and the motor (low-frequency electromagnetic / vibration noise), avoiding the formation of broadband composite noise. At the same time, the noise collectors on the left and right sides can accurately capture the characteristics of the two independent sound sources. The loudspeaker emits anti-phase sound waves in a directional manner, which actively cancels out core noise points such as pump body screw meshing and motor bearings, effectively protecting the hearing health of operators.

[0011] 2. Balancing noise reduction with equipment practicality, adaptable to complex industrial scenarios. Compared to a fully enclosed soundproof enclosure, the partitioned design of the soundproof panel does not obstruct the heat dissipation channels of the pump body and motor (especially suitable for high-temperature environments around the reactor) and does not affect daily maintenance operations; the movable and adjustable noise collector can flexibly adjust its position according to the equipment's operating status (such as the shift of the pump body noise point caused by changes in medium viscosity, or the change in vibration position after motor wear), solving the problem of poor adaptability of traditional fixed noise reduction devices, and can still maintain a stable effect under complex working conditions such as high viscosity and particulate media. 3. The structure is simple and easy to implement, and the cost is highly controllable. The core structure is modular, which can be directly installed on existing reactor screw pumps without modifying the pump body or motor core components, thus reducing long-term maintenance costs. 4. Reduce the cascading effects of vibration and improve system operational stability. The active noise reduction function can specifically weaken the vibration energy of the pump body and motor, and reduce the resonance effect of the equipment itself by canceling out the sound waves of opposite phase. At the same time, the sound insulation plate indirectly reduces the transmission efficiency of vibration to the reactor, avoiding problems such as aging of reactor seals and loosening of pipe connections caused by long-term vibration, and extending the maintenance cycle of the entire reaction system. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the noise collector structure of this utility model; Figure 3 This is a schematic diagram of the sound insulation component structure of this utility model; Figure 4 This is a top view of the cylinder of this utility model.

[0013] In the diagram: 1. Base, 2. Screw pump, 3. Sound insulation component, 31. Sound insulation board, 32. Damping sound insulation felt, 33. Sound absorbing cotton, 4. Sealing rubber ring, 5. Speaker, 6. Guide rod, 7. Base, 8. Cylinder, 9. Support rod, 10. Noise collector. Detailed Implementation

[0014] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4This utility model provides a technical solution: a low-noise reactor screw pump, including a base 1, a screw pump 2 installed at the top of the base 1, and a sound insulation component 3 sleeved on the outer wall of the screw pump 2; The sound insulation component 3 includes a sound insulation panel 31, a damping sound insulation felt 32 is provided on the outer wall of the sound insulation panel 31, and a sound-absorbing cotton 33 is provided on the outer wall of the damping sound insulation felt 32. The inner circumference of the sound insulation component 3 is provided with a sealing rubber ring 4 that fits against the outer wall of the screw pump 2.

[0016] As a preferred option, furthermore, the inner walls of the sound insulation component 3 are equipped with speakers 5 from left to right on both the front and back sides, the inner cavity of the base 1 is equipped with guide rods 6 on both the front and back sides, the outer walls of the guide rods 6 are fitted with bases 7 on both the left and right sides, the inner cavity of the base 1 is screwed with cylinders 8 on both the left and right sides, the output end of the cylinders 8 is fixedly connected to the outer wall of the base 7, and the top of the base 7 is equipped with one end of a support rod 9 on both the front and back sides, the other end of the support rod 9 extends out of the upper surface of the base 1 and is equipped with a noise collector 10.

[0017] As a preferred embodiment, the number of speakers 5 is further specified, and the distance between every two speakers 5 is 15cm.

[0018] As a preferred option, the speaker 5 and the noise collector 10 are electrically connected to each other.

[0019] As a preferred option, the sound insulation component 3 is further configured in an "I" shape.

[0020] All electrical components mentioned in this solution are existing technologies, and their models are only one of them. Any electrical component that meets the requirements of this solution can be used.

[0021] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without further explanation of electrical control. The specific work is as follows.

[0022] When in use, the screw pump 2 is turned on. During the operation of the screw pump 2, the noise generated by the pump body and motor is separated by the sound insulation component 3. At the same time, the semi-enclosed design can better block the superposition and propagation of noise. The cylinder 8 is turned on, which will drive the base 7, support rod 9 and noise collector 10 to move to the left or right. The noise collector 10 can detect the noise at different positions on the screw pump 2. With the activation of the speaker 5 at the corresponding position, the speaker 5 can emit a sound with the same amplitude but opposite phase as the noise, which interferes and cancels out the original noise, thereby achieving the purpose of active noise reduction. This device uses a "physical separation + active noise reduction" collaborative design. The sound insulation plate blocks the superposition of noise from the pump body and motor, avoiding the formation of broadband composite noise. The noise collectors on both sides accurately capture the characteristics of the two types of sound sources. The speaker emits anti-phase sound waves in a direction to cancel out the core noise. The overall noise reduction effect is significant and lower than the industrial limit, effectively protecting the health of operators.

[0023] In the description of this utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "center position," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise explicitly specified and limited, the terms "clamping," "plugging," "welding," "installation," "setting," "interference fit," "screw connection," and "pin connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction relationship between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-noise reactor screw pump, comprising a base (1), characterized in that: A screw pump (2) is mounted at the top end of the base (1), and a sound insulation assembly (3) is sleeved on the outer wall of the screw pump (2); The sound insulation assembly (3) comprises a sound insulation board (31), a damping sound insulation felt (32) is arranged on the outer wall of the sound insulation board (31), and sound absorption cotton (33) is arranged on the outer wall of the damping sound insulation felt (32); A sealing rubber ring (4) that fits closely with the outer wall of the screw pump (2) is arranged along the inner wall circumference of the sound insulation assembly (3).

2. The low-noise reactor screw pump according to claim 1, characterized in that: Loudspeakers (5) are respectively arranged on the front and rear sides of the inner wall of the sound insulation assembly (3) from left to right, guide rods (6) are respectively arranged on the front and rear sides of the inner cavity of the base (1), bases (7) are respectively sleeved on the left and right sides of the outer wall of each guide rod (6), air cylinders (8) are respectively connected by screws to the left and right sides of the inner cavity of the base (1), the output end of each air cylinder (8) is fixedly connected to the outer wall of the corresponding base (7), one end of a support rod (9) is respectively arranged on the front and rear sides of the top end of each base (7), and the other end of each support rod (9) extends out of the upper surface of the base (1) and is provided with a noise collector (10).

3. The low-noise reactor screw pump according to claim 2, characterized in that: The number of the loudspeakers (5) is several, and the spacing between every two loudspeakers (5) is 15 cm.

4. A low-noise reactor screw pump according to claim 2, characterized in that: The loudspeakers (5) and the noise collector (10) are electrically connected to each other.

5. A low-noise reactor screw pump according to claim 1, characterized in that: The sound insulation assembly (3) is arranged in an I-shape.

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