Two-stage three-cone vacuum system

Abstract

The utility model discloses a two-stage triangular-cone vacuum system, which belongs to the field of vacuumizing and comprises a two-stage triangular-cone vacuum pump, an air suction communicating pipe, a condensing tank and an air suction mother pipe, an air inlet of the two-stage triangular-cone vacuum pump is communicated with the air suction communicating pipe, the other end of the air suction communicating pipe is communicated with the condensing tank, and the air suction mother pipe is further communicated in the condensing tank. Cold water is introduced into the condensation tank to reduce the internal temperature, air carrying water vapor entering from the air suction main pipe is cooled in the condensation tank to form condensed water, and the condensed water is discharged from a liquid discharge pipe communicated with the bottom; a water seal assembly is arranged in the liquid discharging pipe to reduce upward flowing of water vapor. The condensation tank and the corresponding water circulation structure are arranged at the front end of the two-stage triangular-cone vacuum pump, a vacuum system which can be used for a long time is formed, air entering the vacuum pump can be treated, water vapor in the air is rapidly condensed into liquid water to be discharged, and the content of the water vapor in the air is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of vacuuming, in particular to a double-stage three-cone vacuum system. Background Art

[0002] When the flat disc vacuum pump is in use, the ambient temperature is particularly high in summer, and the water vapor content in the air is high. It follows the suction main pipe into the vacuum pump, causing the internal liquid level to rise. During operation, the working fluid is always in a high overflow state, and the ability to resist cavitation is poor, and it cannot effectively prevent cavitation damage. The small intake area, small intake volume, and blocked airway directly affect the suction volume. The greater the proportion of water vapor in the gas inhaled by the flat disc vacuum pump, the lower the efficiency of the pump. The liquid level is high when the pump is stationary, and the starting current is large. Although the existing vacuum pump is equipped with a refrigeration mechanism at the front end to cool the incoming air and condense it into water droplets, the condensed water droplets cannot be discharged quickly, so that part of the condensed water will still follow the air into the vacuum pump, which is not conducive to preventing cavitation. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] To solve the above problems, the utility model adopts the following technical solutions.

[0005] A double-stage three-cone vacuum system comprises a double-stage three-cone vacuum pump, an air suction connecting pipe, a condenser and an air suction main pipe, the air inlet of the double-stage three-cone vacuum pump is connected to the air suction connecting pipe, the other end of the air suction connecting pipe is connected to the condenser, and the condenser is also connected to the air suction main pipe, cold water is introduced into the condenser to reduce the internal temperature, the air carrying water vapor entering from the air suction main pipe is cooled in the condenser to form condensed water, and the condensed water is discharged from the drain pipe connected at the bottom; a water seal component is arranged in the drain pipe to reduce the upward flow of water vapor; a first monitoring unit is arranged at one end of the cooling water supply of the condenser, and a second monitoring unit is arranged on the air suction connecting pipe.

[0006] Preferably, a heat exchange pipe is coiled inside the condensing tank, and the air entering from the air intake main pipe flows on the outer surface of the heat exchange pipe to cool down. The two ends of the heat exchange pipe are respectively connected to the cooling water inlet pipe and the cooling water outlet pipe. The cooling water enters the heat exchange pipe from the cooling water inlet pipe and is discharged from the cooling water outlet pipe.

[0007] Preferably, the air intake connecting pipe is located at the end of the condensing tank having a cooling water outlet pipe at the connection point of the condensing tank, and the air intake main pipe is located at the end of the condensing tank having a cooling water inlet pipe at the connection point of the condensing tank.

[0008] Preferably, the connection of the drain pipe to the condensing tank is located at an end of the condensing tank having a cooling water inlet pipe.

[0009] Preferably, the water seal assembly includes a cavity extending toward the outside of the drain pipe and at least one conical water tray and a plurality of eccentric conical water trays arranged longitudinally in the cavity. The conical water tray is located at the top. Both the eccentric conical water tray and the conical water tray have water outlets, and the two adjacent water outlets are staggered with each other.

[0010] Preferably, two conical drain pans are provided, and a plurality of eccentric conical drain pans are provided between the two conical drain pans.

[0011] Preferably, both the conical drain pan and the eccentric conical drain pan are funnel-shaped, and the drain port of the conical drain pan is located at the central axis, while the drain port of the eccentric conical drain pan is arranged away from the central axis.

[0012] Preferably, one end of the liquid discharge pipe through which liquid is discharged is connected to a collection box.

[0013] Preferably, the first monitoring unit and the second unit are both provided with a flow sensor and a temperature sensor for monitoring the flow velocity and temperature of the fluid in the pipeline.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) In the utility model, a condenser and a corresponding water circulation structure are arranged at the front end of the double-stage three-cone vacuum pump to form a vacuum system with long-term use, which can process the air entering the vacuum pump, so that the water vapor in the air is quickly condensed into liquid water and discharged, thereby reducing the water vapor content in the air, greatly reducing the water vapor in the air entering the vacuum pump, avoiding cavitation of the vacuum pump by water vapor, and extending the service life of the vacuum pump.

[0016] (2) The water vapor formed by condensation in the condenser quickly enters the drain pipe and is discharged along the drain pipe, reducing the accumulation of water in the condenser, ensuring that the flowing air will not carry the condensed water away again, and ensuring that the water vapor content in the air entering the vacuum pump is low; the setting of the water seal assembly prevents the water vapor formed during the downward flow from flowing upward, reducing the flow of the formed water vapor into the condenser, and playing a blocking role.

[0017] (3) Multiple monitoring units are set up in the system to monitor the flow and temperature of the internal fluid, provide data support for the maintenance and use of the system, and use the monitored data to issue early warnings and reminders, making the use and maintenance of the system more intelligent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural schematic diagram of a double-stage three-cone vacuum system;

[0019] Figure 2 It is a schematic diagram of the internal connection of the condenser in the double-stage three-cone vacuum system;

[0020] Figure 3 for Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the eccentric cone water tray in the double-stage three-cone vacuum system;

[0022] Figure 5 It is a schematic diagram of the top view of the structure of the eccentric cone water pan in the double-stage three-cone vacuum system.

[0023] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0024] 100. Two-stage three-cone vacuum pump; 200. Air suction connecting pipe; 300. Condensate tank; 310. Cooling water inlet pipe; 320. Cooling water outlet pipe; 330. Air suction main pipe; 340. Drain pipe; 400. Water seal assembly; 410. Conical drain pan; 420. Eccentric cone drain pan; 430. Drain port; 500. Collection box; 610. First monitoring unit; 620. Second monitoring unit. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0028] like Figure 1-5As shown, a double-stage three-cone vacuum system in this embodiment includes a double-stage three-cone vacuum pump 100, an air suction connecting pipe 200, a condensing tank 300 and an air suction mother pipe 330. The air inlet of the double-stage three-cone vacuum pump 100 is connected to the air suction connecting pipe 200, and the other end of the air suction connecting pipe 200 is connected to the condensing tank 300. The condensing tank 300 is also connected to the air suction mother pipe 330. A heat exchange pipe is coiled in the condensing tank 300, and the two ends of the heat exchange pipe are respectively connected to the cooling water inlet pipe 310 and the cooling water outlet pipe 320. The cooling water inlet pipe 310 and the cooling water outlet pipe 320 extend outward from the two ends of the condensing tank 300. The cooling water enters the heat exchange pipe from the cooling water inlet pipe 310 to absorb heat and take away the internal heat. The cooling water after absorbing heat is discharged from the cooling water outlet pipe 320, and cooling water is continuously supplied inside for cooling; the intake main pipe 330 and the cooling water inlet pipe 310 are at the same end. The water vapor content of the air just entering is high and can be in direct contact with the cooling water just entering, so that the air just entering is in the coldest position, which is convenient for the condensation of water vapor. As the cooling water absorbs heat, it flows to the other end in the same direction as the air flow in the condensation tank 300, so that the air continues to flow and cool down, maintains a low temperature environment, and avoids the generation of water vapor. The intake connecting pipe 200 and the cooling water outlet pipe 320 are at the same end. At this end, cooling water flows out, and the low-temperature air is discharged from the cooling tank 300 into the intake connecting pipe 200, and finally enters the double-stage three-cone vacuum pump 100.

[0029] In order to facilitate the rapid discharge of a large amount of condensed water at one end of the cooling water inlet pipe 310 and avoid accumulation at the bottom of the condensation tank 300 and being carried by the flowing air, a drain pipe 340 is connected to the bottom of the end so that the water droplets formed by the air entering the condensation tank 300 will directly fall into the drain pipe 340 after being cooled, and most of the formed water droplets will be directly discharged from the condensation tank 300. A water seal assembly 400 is arranged in the drain pipe 340. The water seal assembly 400 includes a cavity extending to the outside of the drain pipe 340 and at least one conical water tray 410 and a plurality of eccentric conical water trays 420 arranged longitudinally in the cavity. The conical water tray 410 and the eccentric conical water tray 420 are both funnel-shaped. The eccentric conical water tray 420 and the conical water tray 410 both have a water outlet 430, and the water outlet 430 of the conical water tray 410 is located in the middle. At the position of the central axis, the water outlet 430 of the eccentric cone water tray 420 is set away from the central axis. When installed inside the cavity, the adjacent water outlets 430 can be staggered, that is, the upper and lower adjacent water outlets 430 are not on the same vertical axis, so that the water vapor formed by the falling liquid will not flow upward. The funnel-shaped design and the staggered water outlets 430 can block the upward flowing water vapor, ensuring that the water formed by condensation is discharged in time and does not accumulate at the bottom of the condensation tank 300.

[0030] The preferred arrangement scheme is as follows: two conical water trays 410 are set, and multiple eccentric conical water trays 420 are set between the two conical water trays 410. The uppermost conical water tray 410 can evenly collect the falling water to avoid collision when the water flows to the position of the drain port 430, so that the falling water falls slowly and reduces the formation of water vapor; the conical water tray 410 at the bottom can correct the direction of the inclined flowing water to the vertical direction, so that the falling water falls with the lowest contact surface, reducing the formation of water splashes.

[0031] One end of the liquid discharge pipe 340 is connected to the collection box 500, and the water dropped from the water seal assembly 400 is collected in the collection box 500. The low-temperature water collected in the collection box 500 can be discharged through a pipeline and provided to other equipment.

[0032] A first monitoring unit 610 is provided on the cooling water inlet pipe 310, and a second monitoring unit 620 is provided on the intake connecting pipe 200, both of which are provided with flow sensors and temperature sensors. The first monitoring unit 610 monitors the flow rate and temperature of the cooling water entering the cooling water inlet pipe 310, and the second monitoring unit 620 monitors the flow rate and temperature of the air flowing through the intake connecting pipe 200. The above-mentioned flow sensor and temperature sensor can be connected to the main control unit. The main control unit adjusts the flow rate of the incoming cooling water and the air flow rate of the intake main pipe 330 according to the monitored data, and can monitor the system data to play a role in early warning and regulation.

[0033] When the double-stage three-cone vacuum pump 100 generates suction, air enters the condenser 300 from the suction main pipe 330, and at the same time, cooling water is continuously introduced into the cooling water inlet pipe 310 to reduce the temperature in the condenser 300. The air entering the suction main pipe 330 directly exchanges heat with the introduced cooling water at one end of the cooling water inlet pipe 310 of the condenser 300, and the water vapor in the air condenses into water, falls to the bottom and enters the drain pipe 340, and enters the drain. The water in the pipe 340 passes through the multiple conical water trays 410 and the eccentric cone water tray 420 in the water seal assembly 400 in turn, and finally enters the collection box 500 from the bottom of the drain pipe 340, and is collected in the collection box 500 for standby use; the air with water vapor removed flows in the direction of the air suction connecting pipe 200, flows along the air suction connecting pipe 200 and finally enters the two-stage three-cone vacuum pump 100, providing the two-stage three-cone vacuum pump 100 with air with low water vapor content.

[0034] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A two-stage three-cone vacuum system, comprising a two-stage three-cone vacuum pump (100), an air suction connecting pipe (200), a condenser (300) and an air suction mother pipe (330), wherein an air inlet of the two-stage three-cone vacuum pump (100) is connected to the air suction connecting pipe (200), the other end of the air suction connecting pipe (200) is connected to the condenser (300), and the condenser (300) is also connected to the air suction mother pipe (330), characterized in that: Cold water is introduced into the condensation tank (300) to reduce the internal temperature, and the air carrying water vapor entering from the air intake main pipe (330) is cooled in the condensation tank (300) to form condensed water, which is discharged from the drain pipe (340) connected to the bottom; a water seal assembly (400) is provided in the drain pipe (340) to reduce the upward flow of water vapor; A first monitoring unit (610) is provided at one end of the cooling water supply of the condensing tank (300), and a second monitoring unit (620) is provided on the air intake connecting pipe (200).

2. The double-stage three-cone vacuum system according to claim 1, characterized in that: A heat exchange pipe is coiled inside the condensing tank (300), and air entering from the air intake main pipe (330) flows on the outer surface of the heat exchange pipe to be cooled. The two ends of the heat exchange pipe are respectively connected to a cooling water inlet pipe (310) and a cooling water outlet pipe (320), and cooling water enters the heat exchange pipe from the cooling water inlet pipe (310) and is discharged from the cooling water outlet pipe (320).

3. The double-stage three-cone vacuum system according to claim 2, characterized in that: The connection point of the air intake connecting pipe (200) to the condensing tank (300) is located at one end of the condensing tank (300) having a cooling water outlet pipe (320), and the connection point of the air intake main pipe (330) to the condensing tank (300) is located at one end of the condensing tank (300) having a cooling water inlet pipe (310).

4. The double-stage three-cone vacuum system according to claim 2 or 3, characterized in that: The drain pipe (340) is located at a connection point of the condensation tank (300) at one end of the condensation tank (300) having a cooling water inlet pipe (310).

5. The double-stage three-cone vacuum system according to claim 1, characterized in that: The water seal assembly (400) comprises a cavity extending toward the outside of the drain pipe (340), and at least one conical water tray (410) and a plurality of eccentric conical water trays (420) arranged longitudinally in the cavity, the conical water tray (410) being located at the top, the eccentric conical water tray (420) and the conical water tray (410) both having a water outlet (430), and two upper and lower adjacent water outlets (430) being arranged staggered with each other.

6. The double-stage three-cone vacuum system according to claim 5, characterized in that: Two conical water trays (410) are provided, and a plurality of eccentric conical water trays (420) are provided between the two conical water trays (410).

7. The double-stage three-cone vacuum system according to claim 6, characterized in that: The conical water tray (410) and the eccentric conical water tray (420) are both funnel-shaped, and the water outlet (430) of the conical water tray (410) is located at the central axis, while the water outlet (430) of the eccentric conical water tray (420) is arranged away from the central axis.

8. The double-stage three-cone vacuum system according to claim 1, 5, 6 or 7, characterized in that: One end of the liquid discharge pipe (340) for discharging liquid is connected to a collection box (500).

9. The double-stage three-cone vacuum system according to claim 1, characterized in that: The first monitoring unit (610) and the second monitoring unit (620) are both provided with a flow sensor and a temperature sensor for monitoring the flow velocity and temperature of the fluid in the pipeline.

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