Screw vacuum pump with cold spraying system for chemical industry

Abstract

The utility model relates to the technical field of screw vacuum pumps, in particular to a screw vacuum pump with a cold spraying system for the chemical industry. Comprising a pump body, end covers arranged at the two ends of the pump body and a pair of rotors arranged in the pump body, a cavity is formed between the pump body and the end covers, the atomization cooling device is arranged on the pump body, and the output end of the atomization cooling device right faces the cavity; the atomization cooling device comprises a mounting plate arranged on the outer side surface of the pump body, a connecting pipe penetrating through the mounting plate and vertically arranged, a fastener arranged at the top of the connecting pipe and fixedly connected with the mounting plate, and a nozzle arranged at the tail end of the connecting pipe and communicated with the cavity. The screw vacuum pump with the cold spraying system for the chemical industry has the advantages of being good in cooling effect, good in sealing effect, high in cooling efficiency, simple in structure, convenient to disassemble and assemble and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw vacuum pump technical field especially relates to a chemical industry is with cold spray system screw vacuum pump. BACKGROUND

[0002] Screw vacuum pump is a kind of equipment using a pair of screw high-speed rotation to generate suction to realize exhaust effect, and has important application in chemical industry. The working principle of screw vacuum pump: the working process of screw vacuum pump can be divided into three processes: suction, compression and exhaust, and a large amount of heat is released during compression work, and the exhaust temperature is still very high in the case of water cooling jacket, and high temperature can promote part of chemical medium solidification, seriously affect the performance of equipment. Therefore, it is particularly important to reduce the exhaust temperature of screw.

[0003] Chinese patent CN219176574U discloses a screw vacuum pump, which belongs to the technical field of screw vacuum pump. It solves the problem of general cooling effect of gas in the screw vacuum pump and inconvenient use in the prior art. The screw vacuum pump comprises a rack and a pump body arranged on the rack, the pump body is provided with a cooling flow channel for flowing of cooling medium, the cooling flow channel has a water inlet and a water outlet, the rack is further provided with a water tank for storing cooling medium, a water pump for pressurizing cooling medium and a radiator for cooling cooling medium, and the water outlet of the cooling flow channel, the water tank, the water pump, the radiator and the water inlet of the cooling flow channel are sequentially connected to form a cooling medium circulation loop. The utility model has the advantages of improving the cooling effect of gas in the screw vacuum pump and being convenient to use.

[0004] However, the flow direction of cooling water is determined by the arrangement of cooling flow channel in the screw pump, which is not easy to adjust, has low flexibility and cannot ensure uniform cooling of pump body. Scaling is prone to occur in cooling flow channel, water tank and water pump, which may cause blockage or leakage, and the vacuum pump needs stable supply of cooling water, increasing the water cost of equipment. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of screw vacuum pumps with cold spray system for chemical industry, and the orientation and flow of its nozzle can be adjusted at any time, so that the cooling effect of pump body is good and response speed is fast, and the function of fast cooling screw vacuum pump is realized.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model relates to a chemical industry is with cold spray system screw vacuum pump, include: pump body, the end cover of setting pump body both ends and set up a pair of rotor in the pump body, the chamber is formed with between the pump body and end cover, still include: set up atomization cooling device on the pump body, the output of atomization cooling device is opposite to the chamber setting.

[0008] Preferably, the atomization cooling device comprises: a mounting plate disposed on the outer lateral surface of the pump body, a connecting pipe vertically disposed through the mounting plate, a fastener disposed at the top of the connecting pipe and fixedly connected with the mounting plate, and a nozzle disposed at the end of the connecting pipe and in communication with the chamber.

[0009] Preferably, a gasket is disposed between the fastener and the mounting plate.

[0010] Preferably, an O-ring is disposed between the gasket and the mounting plate, and the O-ring is sleeved on the connecting pipe.

[0011] Preferably, a sealing gasket is disposed between the mounting plate and the pump body.

[0012] Preferably, a sealing gasket is disposed between the end of the connecting pipe and the pump body.

[0013] Preferably, a filter screen is disposed inside the nozzle.

[0014] Preferably, an air inlet is disposed at the top of the pump body, and an air outlet is disposed on the side surface of the pump body.

[0015] Preferably, the atomization cooling device is disposed between the air outlet and the air inlet.

[0016] The utility model has the advantages that:

[0017] (1) The utility model discloses a cooling device for a screw vacuum pump, which comprises a pump body, an end cover arranged at both ends of the pump body, a pair of rotors arranged inside the pump body, a chamber formed between the pump body and the end cover, an atomization cooling device arranged on the pump body, and a nozzle arranged at the end of the connecting pipe and in communication with the chamber.

[0018] (2) The utility model discloses a cooling device for a screw vacuum pump, which comprises a pump body, an end cover arranged at both ends of the pump body, a pair of rotors arranged inside the pump body, a chamber formed between the pump body and the end cover, an atomization cooling device arranged on the pump body, and a nozzle arranged at the end of the connecting pipe and in communication with the chamber.

[0019] (3) The utility model discloses a cooling effect is good, and the sealing effect is good, cooling efficiency is high, simple structure and convenient to dismount and other advantages.

[0020] To sum up, the utility model has cooling effect is good, and the sealing effect is good, cooling efficiency is high, simple structure and convenient to dismount and other advantages. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is whole structure schematic diagram of the utility model;

[0022] Figure 2 It is sectional view of the utility model;

[0023] Figure 3 It is Figure 2 Enlarged view of A of the utility model. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0026] EMBODIMENT

[0027] As Figures 1-3 The embodiment provides a screw vacuum pump with a cooling spray system for the chemical industry, which comprises a pump body 1, end covers 2 arranged at both ends of the pump body 1 and a pair of rotors 3 arranged in the pump body 1, a cavity 4 is formed between the pump body 1 and the end covers 2, and the embodiment further comprises an atomizing cooling device 5 arranged on the pump body 1, wherein the output end of the atomizing cooling device 5 is arranged opposite to the cavity 4 and can directly spray the cooling medium to a high-temperature area in the rotors 3 and the cavity 4, so that heat can be quickly absorbed and the temperature of the rotors 3 and the cavity 4 can be effectively reduced, thereby improving the operation efficiency and stability of the screw vacuum pump, the atomizing cooling device 5 can more accurately cool a key part (i.e., the pump body 1 of the middle compression section), waste of the cooling medium is avoided, and the cooling effect can be better controlled; generally, the medium temperature is controlled below 135 DEG C, different water amounts can be sprayed under different gas extraction amounts according to the relationship between the gas extraction amount and the temperature.

[0028] The atomizing cooling device 5 comprises a mounting plate 51 arranged on the outer surface of the pump body 1, a connecting pipe 52 vertically arranged through the mounting plate 51, a fastener 53 arranged at the top of the connecting pipe 52 and fixedly connected with the mounting plate 51 and a nozzle 54 arranged at the end of the connecting pipe 52 and connected with the cavity 4; the mounting plate 51 provides a stable mounting base for the connecting pipe 52 and other components, ensures that the entire atomizing cooling device 5 is firmly fixed on the pump body 1 and will not be loosened during the operation of the screw vacuum pump; the connecting pipe 52 plays a role in conveying the cooling medium and introduces the cooling medium from the outside to the nozzle 54 in the cavity 4, so that the cooling medium can flow smoothly; the fastener 53 further enhances the stability of the atomizing cooling device 5, prevents the components from being loosened or falling off due to vibration and the like during the operation and guarantees the reliable operation of the cooling device; the nozzle 54 is mounted on the detachable connecting pipe 52 and is convenient for later maintenance; the nozzle 54 can atomize the cooling medium into fine particles, increases the contact area of the cooling medium with the rotors 3 and the cavity 4, that is, the nozzle 54 can adjust the water spraying amount according to the actual working condition of the customer, ensures that the water sprayed into the cavity 4 is vaporized, and thereby improves the cooling efficiency; preferably, one atomizing cooling device 5 is arranged, the flow in the connecting pipe 52 is controlled through the size and external pressure of the nozzle 54, the flow can be controlled through a metering pump in particular, and the spraying direction can also be adjusted, which is high in flexibility.

[0029] Meanwhile, a gasket 55 is arranged between the fastener 53 and the mounting plate 51, can effectively fill the small gaps between the two, prevents the cooling medium from leaking from the gaps, improves the sealing performance of the entire atomizing cooling device 5 and also plays a certain buffering role, reduces the pressure concentration of the fastener 53 on the mounting plate 51 during the tightening process, protects the mounting plate 51 from being damaged and prolongs the service life of the mounting plate 51.

[0030] In this embodiment, an O-shaped sealing ring 56 is arranged between the gasket 55 and the mounting plate 51, and the O-shaped sealing ring 56 is sleeved on the connecting pipe 52, further enhancing the sealing between the connecting pipe 52 and the mounting plate 51, preventing the cooling medium from leaking from the connecting position of the connecting pipe 52 and the mounting plate 51, ensuring that the cooling medium can completely enter the chamber 4, improving the cooling effect, and the O-shaped sealing ring 56 has good elasticity and can automatically adjust the sealing effect when the pressure changes, ensuring that good sealing performance can be maintained under different working conditions.

[0031] In this embodiment, a sealing gasket 57 is arranged between the mounting plate 51 and the pump body 1, which can effectively prevent the cooling medium from leaking from the joint surface of the mounting plate 51 and the pump body 1, avoid the pollution and corrosion of the cooling medium to the outside of the pump body 1, and the sealing gasket 57 can also prevent dust, impurities and the like from entering the inside of the pump body 1, protect the key components such as the rotor 3 and the chamber 4 from being polluted, and prolong the service life of the screw vacuum pump.

[0032] In this embodiment, a sealing gasket 58 is arranged between the end of the connecting pipe 52 and the pump body 1, which can prevent the cooling medium from leaking from the connecting position of the end of the connecting pipe 52 and the pump body 1, ensure that the cooling medium can smoothly enter the chamber 4, and the sealing gasket 58 can also reduce the friction between the end of the connecting pipe 52 and the pump body 1, reduce the wear caused by friction, and improve the service life of the components.

[0033] In this embodiment, a filter screen 59 is arranged inside the nozzle 54, which can effectively filter impurities in the cooling medium, prevent impurities from entering the chamber 4 and causing wear or blockage to key components such as the rotor 3, ensure the cleanliness of the cooling medium, and the filter screen 59 can also protect the nozzle 54 from being blocked by impurities, ensure that the nozzle 54 can normally spray the cooling medium, and maintain good atomization effect.

[0034] Of course, the top of the pump body 1 is provided with an air inlet 11, and the side of the pump body 1 is provided with an air outlet 12, so that the gas can enter and exit the screw vacuum pump according to a reasonable flow path, improving the compression efficiency of the gas.

[0035] In addition, the atomizing cooling device 5 is arranged between the air outlet 12 and the air inlet 11, which can cool the gas before it is discharged, reduce the temperature of the discharged gas, ensure uniform cooling effect, and also enable the cooling medium to absorb more heat, improve the cooling effect, and this layout can also reduce the possibility of high-temperature gas flowing back from the air outlet 12 to the air inlet 11, avoid causing thermal damage to the components of the air inlet 11, and improve the overall operation stability of the screw vacuum pump.

[0036] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A screw vacuum pump with a cold jet system for the chemical industry, comprising: The utility model provides a pump body, the end cover of setting pump body both ends and the pair of rotor of setting in the pump body inside, the chamber is shaped between pump body and end cover, it is characterized by further include: set up atomizing cooling device on the pump body, the output of atomizing cooling device is opposite to the chamber setting, atomizing cooling device includes: the mounting plate of setting on the outside surface of pump body, the connecting pipe of going through mounting plate and vertical setting, the fastener of setting in the connecting pipe top and with mounting plate fixed connection and the nozzle of setting in the connecting pipe end and with the chamber intercommunication.

2. A screw vacuum pump with a cooling system according to claim 1, characterized in that, The fastener is provided with a gasket between the mounting plate.

3. The screw vacuum pump with a cooling system according to claim 2, characterized in that, The gasket is provided with an O-shaped sealing ring between the mounting plate, and the O-shaped sealing ring is sleeved on the connecting pipe.

4. The screw vacuum pump with a cooling system according to claim 1, characterized in that, The mounting plate is provided with a sealing gasket between the pump body.

5. The screw vacuum pump with a cooling system according to claim 1, characterized in that, The end of the connecting pipe is provided with a sealing gasket between the pump body.

6. The screw vacuum pump with a cooling system according to claim 1, characterized in that, The nozzle is provided with a filter screen inside.

7. The screw vacuum pump with a cooling system according to claim 1, characterized in that, The top of the pump body is provided with an air inlet, and the side of the pump body is provided with an air outlet.

8. A screw vacuum pump with a cooling system according to claim 7, characterized in that, The air outlet is provided with the atomizing cooling device between the air inlet.

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