Vehicle-mounted vacuum pump device

Abstract

The utility model discloses a vehicle-mounted vacuum pump device which comprises a steam-water separation mechanism, an air inlet filtering mechanism and a vacuum pump. An inlet of the steam-water separation mechanism is communicated with an air inlet pipe, the air inlet pipe is provided with a vacuum safety valve used for overpressure protection, an outlet of the steam-water separation mechanism is communicated with an inlet of the air inlet filtering mechanism, an inlet of the air inlet filtering mechanism is communicated with an inlet of the vacuum pump, and an outlet of the vacuum pump is provided with a branch pipe. The branch pipe is provided with a main air outlet and a bypass air outlet, the bypass air outlet is communicated with an exhaust noise reduction mechanism, the exhaust noise reduction mechanism comprises noise reduction partition plates, the multiple noise reduction partition plates are vertically arranged in an array mode, and an exhaust grid plate is arranged at the top end of the exhaust noise reduction mechanism and used for changing the flow direction of air. The vehicle-mounted vacuum pump device solves the technical problems that a traditional vacuum pump in the technical field of environmental protection is large in vibration and noise and poor in heat dissipation performance.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, and particularly relates to a vehicle-mounted vacuum pump device. Background Art

[0002] The accumulation and blockage of dirt in the drainage ditches beside railway tracks and roads will cause rainwater to be unable to drain in time, thereby triggering waterlogging disasters, corroding railway steel track beds and signal communication facilities, causing subgrade diseases, and becoming factors interfering with railway operation.

[0003] Long-term water accumulation on roads will erode the roads, resulting in road damage, increasing urban maintenance costs, polluting the environment, and affecting the urban ecological environment. It is necessary to implement closed-loop management for key areas such as stations facing rivers and lakes and low-lying areas, and the station entrances connecting sunken plazas. For potential hazards that are difficult to rectify for a while, flood control measures should be implemented; it is very important to dredge the drainage ditches in time, which can effectively avoid the occurrence of the above negative risks. At the same time, it is also necessary to strengthen the management and maintenance of the drainage ditches to ensure the smoothness of the drainage ditches and guarantee the normal operation of the city.

[0004] When blockage, backflow and dirt deposition occur in the sewage treatment system, the pressure in the pipeline will increase, thereby affecting the sewage treatment effect. To solve this problem, sewage treatment plants will use the method of pumping vacuum to create negative pressure in the system. In this way, when the sewage pressure reaches a certain value, the sewage will flow back to remove the blocked and deposited dirt, thereby improving the sewage treatment effect.

[0005] However, traditional coupling vacuum pumps mainly have problems of vibration, noise and heat dissipation. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the above technical deficiencies, provide a vehicle-mounted vacuum pump device, and solve the technical problems of large vibration, high noise and poor heat dissipation performance of traditional vacuum pumps in the technical field of environmental protection.

[0007] To achieve the above technical purpose, the technical solution of the utility model provides a vehicle-mounted vacuum pump device, including:

[0008] A steam-water separation mechanism, an intake air filtering mechanism and a vacuum pump; the inlet of the steam-water separation mechanism is connected with an intake pipe; a vacuum safety valve is arranged on the intake pipe for overpressure protection; the outlet of the steam-water separation mechanism is connected with the inlet of the intake air filtering mechanism; the inlet of the intake air filtering mechanism is connected with the inlet of the vacuum pump; a manifold is arranged at the outlet of the vacuum pump; the manifold is provided with a main air outlet and a bypass air outlet; the main air outlet is connected with an exhaust silencing mechanism; the exhaust silencing mechanism includes a silencing partition; a plurality of the silencing partitions are arranged vertically in an array; an exhaust grille is arranged at the top of the exhaust silencing mechanism for changing the flow direction of the gas.

[0009] Compared with the prior art, the beneficial effects of the present utility model include:

[0010] 1. Small vibration and low noise: The on-vehicle vacuum pump device provided by the present utility model is provided with an exhaust silencing mechanism and a sound insulation cover, which greatly reduce the noise generated by the device.

[0011] 2. Strong heat dissipation performance: The on-vehicle vacuum pump device provided by the present utility model greatly reduces the heat generated by the vacuum pump by providing a cooling chamber, improving the heat dissipation performance of the device.

[0012] 3. Long service life: The on-vehicle vacuum pump device provided by the present utility model greatly improves the purity of the gas by providing a steam-water separation mechanism and an intake air filtration mechanism, preventing the vacuum pump from being corroded and impacted by liquid droplets, thereby increasing the service life of the vacuum pump. Description of the Drawings

[0013] Figure 1 is a three-dimensional structural schematic diagram of the on-vehicle vacuum pump device provided by the present utility model;

[0014] Figure 2 is a sectional structural schematic diagram of the on-vehicle vacuum pump device provided by the present utility model;

[0015] Figure 3 is a sectional structural schematic diagram of the steam-water separation mechanism and the intake air filtration mechanism of the on-vehicle vacuum pump device provided by the present utility model;

[0016] Figure 4 is a front sectional structural schematic diagram of the exhaust silencing mechanism of the on-vehicle vacuum pump device provided by the present utility model;

[0017] Figure 5 is a top sectional structural schematic diagram of the exhaust silencing mechanism of the on-vehicle vacuum pump device provided by the present utility model;

[0018] Figure 6 is a structural schematic diagram of the cooling chamber of the on-vehicle vacuum pump device provided by the present utility model. Detailed Embodiments

[0019] In order to make the objectives, technical solutions and advantages of the present utility model clearer, 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.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used herein in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 , this embodiment provides a vehicle-mounted vacuum pump device, including: a steam-water separation mechanism 1, an intake air filtering mechanism 2, a vacuum pump 3, an exhaust silencing mechanism 4, and a housing 5.

[0023] The inlet of the steam-water separation mechanism 1 is connected to an intake pipe 1a, and the intake pipe 1a is provided with a vacuum safety valve 1a1 for overpressure protection. The outlet of the steam-water separation mechanism 1 is connected to the inlet of the intake air filtering mechanism 2. The inlet of the intake air filtering mechanism 2 is connected to the inlet of the vacuum pump 3. The outlet of the vacuum pump 3 is provided with a manifold 3a, and the manifold 3a is provided with a main outlet 3a1 and a bypass outlet 3a2. The bypass outlet 3a2 is connected to the exhaust silencing mechanism 4.

[0024] The exhaust silencing mechanism 4 includes a silencing partition 41, and a plurality of the silencing partitions 41 are arranged vertically in an array. The top of the exhaust silencing mechanism 4 is provided with an exhaust grille 42 for changing the flow direction of the gas. By providing the exhaust silencing mechanism 4, the noise generated by the device is greatly reduced.

[0025] Specifically, a plurality of the exhaust grilles are arranged in parallel in an array and fixed to the outlet end of the exhaust silencing mechanism. A plurality of the exhaust grilles are arranged at an angle with the outlet of the exhaust silencing mechanism to change the flow direction of the gas.

[0026] Preferably, the vacuum pump 3 is selected from the Haipeng brand, with a model of VTB822.XL, and its flow rate is 4636m 3 / h, the vacuum degree is -90 Kpa, and the vacuum pump 3 meets the standard GB / T 25336-2018 Railway Maintenance Machinery - Inspection and Test Methods.

[0027] Specifically, the manifold 3a discharges gas into the system or into the atmosphere through the main air outlet 3a1, where the design and size of the main air outlet 3a1 are for handling most of the gas flow rate during the normal operation of the vacuum pump 3.

[0028] Specifically, the bypass air outlet 3a2 is used to regulate or release gas when the vacuum pump 3 starts and stops, and in abnormal situations that may occur during the operation of the vacuum pump 3. When the vacuum pump 3 starts, the bypass air outlet 3a2 can help the vacuum pump 3 quickly reach the working state, and when it stops, it can allow the pressure inside the vacuum pump 3 to gradually balance, reducing shock and damage; at the same time, in some cases, if the system pressure suddenly rises, the bypass air outlet 3a1 can prevent gas from flowing back into the vacuum pump 3, protecting the vacuum pump 3 from damage.

[0029] Furthermore, the air ducts of the intake pipe 1a, the steam - water separation mechanism 1, the intake air filtering mechanism 2, the vacuum pump 3, and the exhaust silencing mechanism 4 are connected in series in sequence for gas to flow from the intake pipe 1a into the steam - water separation mechanism 1, the gas flowing into the steam - water separation mechanism 1 flows into the intake air filtering mechanism 2 and finally into the vacuum pump 3, and is discharged through the exhaust silencing mechanism 1.

[0030] In this embodiment, the steam - water separation mechanism 1 is mainly used to improve the purity of the gas and protect downstream equipment, namely the intake air filtering mechanism 2 and the vacuum pump 3. By removing liquid particles in the gas, the steam - water separation mechanism 1 can improve the purity of the output gas. At the same time, liquid droplets in the gas may cause damage to downstream equipment (such as compressors, vacuum pumps, etc.), and the steam - water separation mechanism 1 can prevent these equipment from being impacted and corroded by liquid droplets.

[0031] Furthermore, an exhaust silencing mechanism 4 is also provided on one side of the vacuum pump 3 to reduce the noise generated by the vacuum pump 3, and a sound - insulating cover 6 is provided on the other side of the vacuum pump 3 to isolate the noise generated by the vacuum pump 3.

[0032] Specifically, the noise reduction value of the sound - insulating cover 6 is not higher than 90 dB (at a distance of 1 meter).

[0033] Furthermore, the outlet of the sound - insulating cover 6 is connected to a cooling chamber 7, and the cooling chamber 7 is arranged on one side of the vacuum pump 3. During the working state, pre - cooled air flows in from the inlet of the sound - insulating cover 6 and flows into the cooling chamber 7 to reduce the heat generated by the vacuum pump 3, with strong heat dissipation performance.

[0034] Furthermore, the steam-water separation mechanism 1 includes a gas-liquid separation tank body 11 and a steam-water separation plate 12. The steam-water separation plate 12 is vertically and fixedly connected to the inner wall of the gas-liquid separation tank body 11, and two adjacent steam-water separation plates 12 are arranged vertically and staggeredly.

[0035] Specifically, in this embodiment, by setting the steam-water separation plate 12, the steam-water separation mechanism 1 increases the path length and direction change of gas flow, promotes the aggregation and separation of liquid droplets. That is, the gas changes direction multiple times within the steam-water separation mechanism 1, and the liquid droplets gradually aggregate and drip under the action of the steam-water separation plate 12, while the clean gas is discharged from the top of the steam-water separation mechanism. The steam-water separation effect is good and the cost is low.

[0036] Furthermore, the steam-water separation mechanism 1, the intake air filtering mechanism 2 and the vacuum pump 3 are arranged inside the housing 5. A liquid discharge hole 5a is opened at the bottom end of the housing 5. The liquid discharge hole 5a is located at the outlet of the steam-water separation mechanism 1, and the liquid discharge hole 5a is communicated with a liquid discharge pipe 8.

[0037] Since the steam-water separation mechanism 1 separates the incoming gas, a certain amount of liquid is generated, and the liquid flows through the liquid discharge pipe 8 through the liquid discharge hole 5a and is discharged.

[0038] Furthermore, the intake air filtering mechanism 2 includes an intake air filtering tank body 21 and a filter element 22. The filter element 22 is arranged in the inner cavity of the intake air filtering tank body 21 for filtering gas.

[0039] Preferably, the filter element 22 is made of stainless steel, and its advantages include: 1. Filtering performance: The stainless steel material can be processed into fine filtering pore diameters to provide high-efficiency filtering performance; 2. Cost-effectiveness: Compared with other metal materials, it has higher durability, which helps to reduce the manufacturing cost of the filter element; 3. Corrosion resistance: The stainless steel material has processing advantages, and thin plates can be stamped into shape.

[0040] Furthermore, the input end of the vacuum pump 3 is drivingly connected to a vacuum pump driving source 9; a sewage level gauge 10, a negative pressure gauge 13, and a differential pressure gauge 14 are arranged on the outer side of the housing 5, a thermometer 15 is arranged on one side of the exhaust silencing mechanism 4, and a vacuum oil level gauge 15 is arranged on one side of the vacuum pump 3.

[0041] Specifically, the vacuum pump driving source 9 can be selected from a hydraulic motor, an internal combustion engine or an electric motor for driving.

[0042] Specifically, the sewage level gauge 10 mainly monitors the amount of sewage generated by the steam-water separation mechanism 1, and the negative pressure gauge 13 and the differential pressure gauge 14 mainly monitor the pressure and differential pressure inside the device; the vacuum oil level gauge 15 can display the oil level height inside the vacuum pump 3 in real time, ensuring that the operator understands the current state of the oil in the vacuum pump 3. By monitoring the oil level, it is possible to prevent the oil level in the vacuum pump 3 from being too high or too low. An overly high oil level may cause the oil to be sucked into the vacuum system, while insufficient oil may lead to insufficient lubrication of the vacuum pump 3, increasing wear and even damage. Maintaining an appropriate oil level can reduce the wear of the pump and extend its service life.

[0043] Working principle: The vehicle-mounted vacuum pump provided by this utility model includes a steam-water separation mechanism 1, an air intake filtering mechanism 2, and a vacuum pump 3. The inlet of the steam-water separation mechanism 1 is connected to an intake pipe 1a, and the intake pipe 1a is provided with a vacuum safety valve 1a1 for overpressure protection. The outlet of the steam-water separation mechanism 1 is connected to the inlet of the air intake filtering mechanism 2, the inlet of the air intake filtering mechanism 2 is connected to the inlet of the vacuum pump 3, the outlet of the vacuum pump 3 is provided with a manifold 3a, and the manifold 3a is provided with a main air outlet 3a1 and a bypass air outlet 3a2. The main air outlet 3a1 is connected to an exhaust silencing mechanism 4. The exhaust silencing mechanism 4 includes a silencing partition 41, and a plurality of the silencing partitions 41 are arranged in a vertical array. The top of the exhaust silencing mechanism 4 is provided with an exhaust grille 42 for changing the flow direction of the gas.

[0044] Specifically, the outlet of the vacuum pump 3 greatly reduces the noise generated by the device by providing the exhaust silencing mechanism 4 and the sound insulation cover 6, greatly reduces the heat generated by the vacuum pump 3 by providing the cooling cavity 7, improves the heat dissipation performance of the device, and greatly improves the purity of the gas by providing the steam-water separation mechanism 1 and the air intake filtering mechanism 2, preventing the vacuum pump 3 from being corroded and impacted by liquid droplets, thereby improving the service life of the vacuum pump 3.

[0045] The above specific embodiments of the present utility model do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A vehicle-mounted vacuum pump device, characterized in that, Including: A steam-water separation mechanism, an intake air filtering mechanism and a vacuum pump; an inlet of the steam-water separation mechanism is communicated with an intake air pipe; a vacuum safety valve is arranged on the intake air pipe for overpressure protection; an outlet of the steam-water separation mechanism is communicated with an inlet of the intake air filtering mechanism; the inlet of the intake air filtering mechanism is communicated with the inlet of the vacuum pump; a manifold is arranged at an outlet of the vacuum pump; the manifold is provided with a main air outlet and a bypass air outlet; the main air outlet is communicated with an exhaust silencing mechanism; the exhaust silencing mechanism includes a silencing partition plate; a plurality of the silencing partition plates are arranged in a vertical array; an exhaust grille for changing the gas flow direction is arranged at the top end of the exhaust silencing mechanism.

2. The on-vehicle vacuum pump device according to claim 1, wherein The air passages of the intake air pipe, the steam-water separation mechanism, the intake air filtering mechanism, the vacuum pump and the exhaust silencing mechanism are sequentially communicated as a series of air passages for allowing gas to flow from the intake air pipe into the steam-water separation mechanism, the gas flowing into the steam-water separation mechanism to flow into the intake air filtering mechanism and finally flow into the vacuum pump and be discharged through the exhaust silencing mechanism.

3. The in-vehicle vacuum pump device according to claim 2, characterized in that, An exhaust silencing mechanism is also arranged on one side of the vacuum pump for reducing the noise generated by the vacuum pump; a sound insulation cover is arranged on the other side of the vacuum pump for isolating the noise generated by the vacuum pump.

4. The on-vehicle vacuum pump device according to claim 3, characterized in that, An outlet of the sound insulation cover is communicated with a cooling cavity; the cooling cavity is arranged on one side of the vacuum pump; during the working state, pre-cooled air flows in from an inlet of the sound insulation cover and flows into the cooling cavity for reducing the heat generated by the vacuum pump.

5. The on-vehicle vacuum pump device according to claim 4, wherein The steam-water separation mechanism includes a gas-liquid separation tank body and a steam-water separation plate; the steam-water separation plate is vertically and fixedly connected to the inner wall of the gas-liquid separation tank body; two adjacent steam-water separation plates are arranged in a staggered manner up and down.

6. The on-vehicle vacuum pump device according to claim 5, characterized in that, It further includes a housing; the steam-water separation mechanism, the intake air filtering mechanism and the vacuum pump are arranged inside the housing; a liquid discharge hole is formed at the bottom end of the housing; the liquid discharge hole is located at the outlet of the steam-water separation mechanism; the liquid discharge hole is communicated with a liquid discharge pipe.

7. The on-vehicle vacuum pump device according to claim 6, wherein The intake air filtering mechanism includes an intake air filtering tank body and a filter element; the filter element is arranged in an inner cavity of the intake air filtering tank body for filtering gas.

8. The in-vehicle vacuum pump device according to claim 7, characterized in that, The input end of the vacuum is drivingly connected to a vacuum pump driving source; a sewage level gauge, a negative pressure gauge and a differential pressure gauge are arranged on the outer side of the housing; a thermometer is arranged on one side of the exhaust silencing mechanism; a vacuum oil level gauge is arranged on one side of the vacuum pump.

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