Noise-reducing heater oil pump

Abstract

This utility model discloses a noise-reducing heater oil pump, including a pump body with an oil inlet at one end and an oil outlet at the other. A one-way valve assembly is disposed within the pump body. A vibration guide assembly is disposed on the oil outlet corresponding to the position of the one-way valve assembly to transmit the vibration force generated by the one-way valve assembly during operation. A noise-reducing structure is disposed on the pump body to work in conjunction with the vibration guide assembly to reduce the noise generated by the vibration force of the one-way valve assembly. This utility model solves the problem of excessive vibration force and noise generated by the one-way valve assembly during operation in traditional heater oil pumps.

Description

Technical Field

[0001] This utility model relates to the field of heater oil pump technology, specifically a noise-reducing heater oil pump. Background Technology

[0002] In industrial production and many civilian applications, heater oil pumps play a vital role in transporting heated oil to meet various process or usage requirements. However, traditional heater oil pumps have significant drawbacks in actual operation. For example, the check valve assembly inside the pump generates significant vibration due to frequent opening and closing. This vibration not only acts on the check valve assembly but is also transmitted to the pump body through the oil outlet, thus affecting the service life of the pump. At the same time, the vibration also causes excessive noise. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a noise-reducing heater oil pump, which solves the problem of excessive vibration and noise generated by the one-way valve assembly in traditional heater oil pumps during operation.

[0004] To achieve the above objectives, this utility model provides a noise-reducing heater oil pump, including a pump body, one end of which is an oil inlet and the other end is an oil outlet. A one-way valve assembly is provided in the pump body. A vibration guide assembly is provided on the oil outlet corresponding to the position of the one-way valve assembly for transmitting the vibration force generated by the one-way valve assembly during operation. A noise reduction structure is provided on the pump body for linkage with the vibration guide assembly to reduce the noise generated when the one-way valve assembly generates vibration force.

[0005] The advantages of adopting the above technical solution are: by setting a vibration guide component at the oil outlet end and cooperating with the noise reduction structure on the pump body, the vibration force generated by the one-way valve assembly during operation can be effectively transmitted and processed, greatly reducing the noise generated by vibration between the oil outlet end and the pump body. Due to the synergistic work of the noise reduction structure and the vibration guide component, the vibration stress borne by the pump body is reduced, thereby reducing the occurrence of wear and fatigue damage of parts caused by frequent vibration, reducing the transmission of the vibration force of the one-way valve assembly to the pump body and connected pipelines and equipment, and effectively avoiding the occurrence of resonance.

[0006] The present invention further comprises: the vibration guiding structure including a vibration guiding sleeve sleeved on the oil outlet end; the noise reduction structure including a noise reduction sleeve sleeved on the vibration guiding sleeve; the outer peripheral wall of the vibration guiding sleeve and the inner peripheral wall of the noise reduction sleeve are fitted with a clearance to form a sound insulation cavity; a plurality of vibration guiding lips are evenly distributed circumferentially on the outer peripheral wall of the vibration guiding sleeve; a plurality of contact lips are evenly distributed circumferentially on the inner peripheral wall of the noise reduction sleeve; the plurality of vibration guiding lips correspond one-to-one with the plurality of contact lips; each vibration guiding lip contacts its corresponding contact lip and is staggered; the vibration guiding lip and the contact lip are both made of elastic material.

[0007] The advantages of adopting the above technical solution are as follows: By setting up a vibration guide sleeve and a noise reduction sleeve, and forming a sound insulation cavity between them, an effective sound insulation barrier is constructed. During the propagation process, noise will be continuously reflected and attenuated after entering the sound insulation cavity, greatly reducing the noise intensity transmitted from the oil pump. At the same time, the vibration guide lip on the outer peripheral wall of the vibration guide sleeve and the contact lip on the inner peripheral wall of the noise reduction sleeve correspond one-to-one and are staggered. When the one-way valve assembly vibrates, the vibration force is first transmitted to the vibration guide sleeve through the oil outlet end. The vibration guide lip transmits the vibration to the contact lip. Since both the vibration guide lip and the contact lip are made of elastic material, they can buffer and absorb the vibration while transmitting it. The staggered setting further increases the path and complexity of vibration transmission, so that the vibration energy is continuously dispersed and weakened during transmission, thereby more effectively reducing the impact of vibration on the pump body and reducing problems such as loosening and wear of parts caused by vibration.

[0008] The present invention further comprises: the outer peripheral wall of the starting end of the vibration guide sleeve and the end face of the starting end of the vibration guide sleeve are connected by a smooth curved surface and a first stepped surface is formed; a sealing ring extends from the starting end of the noise reduction sleeve toward the vibration guide sleeve; the inner peripheral wall of the sealing ring and the outer wall of the sealing ring are connected by a smooth curved surface and a second stepped surface is formed for abutting against the first stepped surface; a sealing ring is connected between the first stepped surface and the second stepped surface; the sealing ring is made of elastic rubber material.

[0009] The advantages of adopting the above technical solution are as follows: In the above technology, the first step surface of the vibration guide sleeve and the second step surface of the noise reduction sleeve sealing ring are tightly connected by a sealing ring. The sealing ring is made of elastic rubber material, which can effectively fill the tiny gap between the two step surfaces, thereby preventing air leakage in the sound insulation cavity and ensuring that the sound insulation cavity always maintains a good sound insulation effect. At the same time, it also prevents external dust, impurities, etc. from entering the sound insulation cavity, avoiding the impact of foreign matter accumulation on the normal vibration transmission and buffering function between the vibration guide lip and the contact lip, and ensuring the stable operation of the entire noise reduction and vibration guide system. The mutual contact between the first step surface and the second step surface, combined with the elastic fastening effect of the sealing ring, makes the vibration guide sleeve and the noise reduction sleeve form a stable structure at the connection. During the operation of the heater oil pump, even if subjected to large vibrations or external impacts, the sealed connection structure can effectively prevent the vibration guide sleeve and the noise reduction sleeve from relative displacement or loosening, enhancing the mechanical strength and stability of the entire vibration guide and noise reduction structure and extending the service life of the equipment.

[0010] The present invention further includes the following feature: the sound insulation cavity is filled with sound-absorbing cotton.

[0011] The advantages of adopting the above technical solution are: the sound-absorbing cotton filling the sound insulation cavity further optimizes the sound insulation performance of the sound insulation cavity. After filling with sound-absorbing cotton, the sound insulation cavity can better block and absorb noise of different frequencies. The sound-absorbing cotton has a special porous structure. When noise enters the sound insulation cavity filled with sound-absorbing cotton, the sound waves will cause the air inside the sound-absorbing cotton to vibrate. Due to the porous nature of the sound-absorbing cotton, the air will rub against the pore walls during the vibration process, converting sound energy into heat energy and consuming it, thereby effectively absorbing noise. The noise reduction intensity is improved by setting up the above technology.

[0012] The present invention further includes the following features: the noise reduction sleeve is made of metal, and a damping sound insulation felt is attached to the inner circumferential wall of the shaft hole of the noise reduction sleeve. The damping sound insulation felt has perforations for each contact lip position to pass through.

[0013] The advantages of adopting the above technical solution are: the noise reduction sleeve is made of metal, which has a certain sound insulation capability and can play a preliminary role in blocking noise, while the damping sound insulation felt attached to the inner circumferential wall of the shaft hole further enhances the noise reduction effect.

[0014] The present invention further comprises: the inner peripheral wall of the shaft hole of the vibration guide sleeve is threadedly connected to the outer peripheral wall of the oil outlet end, and the end face of the noise reduction sleeve is threadedly connected to the pump body.

[0015] The advantages of adopting the above technical solution are: In the above technology, the vibration guide sleeve is threadedly connected to the outer peripheral wall of the oil outlet through the inner peripheral wall of the shaft hole, and the end face of the noise reduction sleeve is threadedly connected to the pump body. The threaded connection can provide a tight and stable bonding force. During the operation of the heater oil pump, vibration and a certain pressure will be generated. The threaded connection between the vibration guide sleeve and the oil outlet, and between the noise reduction sleeve and the pump body can effectively resist these external forces, ensuring that the components will not loosen or shift due to vibration or pressure. At the same time, it is convenient to disassemble and connect, thereby improving the disassembly and assembly efficiency. Attached Figure Description

[0016] Figure 1 This is a simplified perspective view of a portion of the present invention;

[0017] Figure 2 for Figure 1 A magnified view of part A in the middle. Detailed Implementation

[0018] This utility model provides a noise-reducing heater oil pump, including a pump body 1. One end of the pump body 1 is an oil inlet 11, and the other end is an oil outlet 12. A one-way valve assembly is disposed in the pump body 1. A vibration guide assembly is disposed on the oil outlet 12 corresponding to the position of the one-way valve assembly to transmit the vibration force generated by the one-way valve assembly during operation. A noise-reducing structure is disposed on the pump body 1 to work in conjunction with the vibration guide assembly to reduce the noise generated when the one-way valve assembly vibrates. The vibration guiding structure includes a vibration guiding sleeve 2 sleeved on the oil outlet end 12, and the noise reduction structure includes a noise reduction sleeve 3 sleeved on the vibration guiding sleeve 2. The outer peripheral wall of the vibration guiding sleeve 2 and the inner peripheral wall of the noise reduction sleeve 3 are fitted together with a clearance to form a sound insulation cavity 21. A plurality of vibration guiding lips 22 are evenly distributed circumferentially on the outer peripheral wall of the vibration guiding sleeve 2, and a plurality of contact lips 31 are evenly distributed circumferentially on the inner peripheral wall of the noise reduction sleeve 3. Each vibration guiding lip 22 corresponds one-to-one with a corresponding contact lip 31. The vibration guide lip 22 and the contact lip 31 are both made of elastic material and are in contact with each other but misaligned. The outer peripheral wall of the starting end of the vibration guide sleeve 2 is connected to the end face of the starting end of the vibration guide sleeve 2 with a smooth curved surface and forms a first stepped surface 23. The starting end of the noise reduction sleeve 3 extends towards the vibration guide sleeve 2 with a sealing ring 32. The inner peripheral wall of the sealing ring 32 is connected to the outer wall of the sealing ring 32 with a smooth curved surface and forms a second stepped surface 321 for abutting against the first stepped surface 23. The first stepped surface 23 and the second stepped surface 321 are connected. A sealing ring 33 is connected between 21. The sealing ring 33 is made of elastic rubber. The sound insulation cavity 21 is filled with sound-absorbing cotton 211. The noise reduction sleeve 3 is made of metal. The inner circumferential wall of the shaft hole of the noise reduction sleeve 3 is attached with a damping sound insulation felt 34. The damping sound insulation felt 34 has a through hole for each contact lip 31 to pass through. The inner circumferential wall of the shaft hole of the vibration guide sleeve 2 is threadedly connected to the outer circumferential wall of the oil outlet 12. The end face of the noise reduction sleeve 3 is threadedly connected to the pump body 1.

[0019] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A noise-reducing heater oil pump, comprising a pump body, one end of which is an oil inlet end and the other end is an oil outlet end, a one-way valve assembly being arranged in the pump body, characterized in that: The oil outlet end is provided with a vibration guide component corresponding to the one-way valve assembly position for transmitting the vibration force generated by the one-way valve assembly during operation. The pump body is provided with a noise reduction structure for linkage with the vibration guide component to reduce the noise generated when the one-way valve assembly generates vibration force.

2. The noise-reducing heater oil pump according to claim 1, characterized in that: The vibration guiding assembly includes a vibration guiding sleeve fitted on the oil outlet end, and the noise reduction structure includes a noise reduction sleeve fitted on the vibration guiding sleeve. The outer peripheral wall of the vibration guiding sleeve and the inner peripheral wall of the noise reduction sleeve are fitted together with a clearance to form a sound insulation cavity. The outer peripheral wall of the vibration guiding sleeve has a plurality of vibration guiding lips evenly distributed around it, and the inner peripheral wall of the noise reduction sleeve has a plurality of contact lips evenly distributed around it. The plurality of vibration guiding lips and the plurality of contact lips correspond one-to-one. Each vibration guiding lip contacts its corresponding contact lip and is staggered. Both the vibration guiding lip and the contact lip are made of elastic material.

3. The noise-reducing heater oil pump according to claim 2, characterized in that: The outer peripheral wall of the starting end of the vibration guide sleeve is connected to the end face of the starting end of the vibration guide sleeve with a smooth curved surface and forms a first stepped surface. A sealing ring extends from the starting end of the noise reduction sleeve toward the vibration guide sleeve. The inner peripheral wall of the sealing ring is connected to the outer wall of the sealing ring with a smooth curved surface and forms a second stepped surface for abutting against the first stepped surface. A sealing ring is connected between the first stepped surface and the second stepped surface. The sealing ring is made of elastic rubber material.

4. The noise-reducing heater oil pump according to claim 2, characterized in that: The soundproof cavity is filled with sound-absorbing cotton.

5. A noise-reducing heater oil pump according to claim 2, characterized in that: The noise reduction sleeve is made of metal. The inner circumferential wall of the shaft hole of the noise reduction sleeve is covered with damping sound insulation felt. The damping sound insulation felt has perforations for each contact lip position.

6. A noise-reducing heater oil pump according to claim 2, characterized in that: The inner circumferential wall of the shaft hole of the vibration guide sleeve is threadedly connected to the outer circumferential wall of the oil outlet end, and the end face of the noise reduction sleeve is threadedly connected to the pump body.

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