Anti-jamming dry vacuum pump

Abstract

The utility model discloses an anti-jamming dry vacuum pump which comprises a vacuum pump body, an air inlet is formed in the upper end of the vacuum pump body, a filtering mechanism used for filtering inlet air is arranged at the upper end of the air inlet, the filtering mechanism comprises a filtering bin, a filtering element and a sealing plate, the filtering bin is fixedly arranged at the upper end of the air inlet, and the sealing plate is fixedly arranged at the upper end of the filtering element. A filter element is fixedly arranged in the filter bin, a sealing plate is fixedly arranged at the upper end of the filter bin, a cooling mechanism used for cooling inlet air is arranged on one side of the surface of the filter bin and comprises a cooling bin, a fixing plate and a flow dividing pipe, and the cooling bin is fixedly arranged on one side of the surface of the filter bin. The interior of the filtering bin communicates with the interior of the cooling bin. The vacuum pump is good in using effect, the filtering and cooling structure is arranged at the air inlet end of the vacuum pump body, and the situation that a rotor in the vacuum pump body is stuck due to sundries and overheating deformation can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps, in particular to a dry vacuum pump that prevents jamming. Background Technique

[0002] A dry vacuum pump is a mechanical vacuum pump that can start pumping from atmospheric pressure, can directly discharge the pumped gas into the atmosphere, has no oil or other working media in the pump cavity, and the ultimate pressure of the pump is of the same order of magnitude or close to that of an oil-sealed vacuum pump; since there is no other working medium in the pump cavity, it reduces process pollution and has a certain corrosion resistance. Therefore, dry vacuum pumps are often used pump bodies in industries such as semiconductors and chemical engineering.

[0003] However, in the prior art, such dry vacuum pumps have a risk of jamming during use. For example, when the pump body is working, sand, iron filings or other sundries enter the inside of the pump body through the air inlet. At the same time, if the inlet air temperature is relatively high, when the dry vacuum pump compresses the gas subsequently, the gas temperature will further increase. In this way, the temperature of the internal components of the vacuum pump will exceed the threshold value. And the parts of such equipment are all precisely matched. When the temperature exceeds the threshold value and thermal expansion and contraction occur, there is also a risk of jamming. Therefore, an improved dry vacuum pump that prevents jamming is needed to solve this problem. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a dry vacuum pump that prevents jamming, so as to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A dry vacuum pump that prevents jamming, including a vacuum pump body, an air inlet is arranged at the upper end of the vacuum pump body, and a filtering mechanism for filtering the inlet air is arranged at the upper end of the air inlet. The filtering mechanism includes a filtering chamber, a filter element, and a sealing plate. A filtering chamber is fixedly arranged at the upper end of the air inlet, a filter element is fixedly arranged inside the filtering chamber, a sealing plate is fixedly arranged at the upper end of the filtering chamber, and a cooling mechanism for cooling the inlet air is arranged on one side of the surface of the filtering chamber. The cooling mechanism includes a cooling chamber, a fixing plate, and a shunt pipe. A cooling chamber is fixedly arranged on one side of the surface of the filtering chamber, the inside of the filtering chamber is in mutual communication with the inside of the cooling chamber, fixing plates are fixedly arranged on both sides inside the cooling chamber, and a shunt pipe is fixedly arranged between the fixing plates.

[0006] Preferably, a connection port is fixedly arranged at one end of the cooling chamber away from the filtering chamber, and other pipelines can be conveniently connected through the connection port.

[0007] Preferably, a liquid inlet pipe is fixedly arranged at the lower end of the cooling bin, and a liquid outlet pipe is fixedly arranged on one side of the upper end of the cooling bin. The coolant is injected into the cooling bin through the liquid inlet pipe, and then the entire cooling bin is filled with the coolant and discharged from the liquid outlet pipe. At this time, the coolant inside the cooling bin can be in full contact with the gas inside the shunt pipe to exchange heat, thereby preventing the situation that the overheated gas is sucked into the vacuum pump body and causing the rotor to jam.

[0008] Preferably, locking screws are fixedly arranged between the sealing plate and the filter bin. By removing the sealing plate through the locking screws, it is convenient to clean the filter screen inside the filter bin.

[0009] Preferably, a motor is fixedly arranged on one side of the vacuum pump body, and a power transmission connection is arranged between the power output end of the motor and the power input end of the vacuum pump body.

[0010] Preferably, a mounting bracket is fixedly arranged at the lower end of the vacuum pump body, and through the mounting bracket, the whole device can be conveniently fixedly installed at the target position.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. For the air entering from the air inlet of the present utility model, it will first enter the shunt pipe. After being shunted by the shunt pipe, the air can form multiple airflows. At this time, the coolant is injected into the cooling bin through the liquid inlet pipe, and then the entire cooling bin is filled with the coolant and discharged from the liquid outlet pipe. At this time, the coolant inside the cooling bin can be in full contact with the gas inside the shunt pipe to exchange heat, thereby preventing the situation that the overheated gas is sucked into the vacuum pump body and causing the rotor to jam.

[0013] 2. The air that is shunted and cooled inside the shunt pipe of the present utility model will finally re-converge into the filter bin, then pass through the filter element for filtration, and then enter the air inlet. In this way, it can effectively prevent sundries from entering the vacuum pump body and causing the rotor inside the vacuum pump body to jam. And the sealing plate of this device can be removed through the locking screws, which is convenient for cleaning the filter screen inside the filter bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a dry vacuum pump with anti-jamming of the present utility model;

[0015] Figure 2 It is a sectional view of the overall structure of a dry vacuum pump with anti-jamming of the present utility model;

[0016] Figure 3 It is for a dry vacuum pump with anti-jamming of the present utility model Figure 2 side view.

[0017] In the figure: 1. Vacuum pump body; 2. Air inlet; 3. Filter chamber; 4. Filter element; 5. Sealing plate; 6. Cooling chamber; 7. Fixed plate; 8. Diverging pipe; 9. Connection port; 10. Liquid inlet pipe; 11. Liquid outlet pipe; 12. Locking screw; 13. Electric motor; 14. Mounting bracket. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-3 , the present invention provides a technical solution: a dry vacuum pump that prevents jamming, including a vacuum pump body 1. An air inlet 2 is provided at the upper end of the vacuum pump body 1. A filtering mechanism for filtering the intake air is provided at the upper end of the air inlet 2. The filtering mechanism includes a filter chamber 3, a filter element 4, and a sealing plate 5. A filter chamber 3 is fixedly provided at the upper end of the air inlet 2. A filter element 4 is fixedly provided inside the filter chamber 3. A sealing plate 5 is fixedly provided at the upper end of the filter chamber 3. A cooling mechanism for cooling the intake air is provided on one side of the surface of the filter chamber 3. The cooling mechanism includes a cooling chamber 6, a fixed plate 7, and a diverging pipe 8. A cooling chamber 6 is fixedly provided on one side of the surface of the filter chamber 3. The inside of the filter chamber 3 and the inside of the cooling chamber 6 are in mutual communication. Fixed plates 7 are fixedly provided on both sides inside the cooling chamber 6. A diverging pipe 8 is fixedly provided between the fixed plates 7.

[0020] A connection port 9 is fixedly provided at one end of the cooling chamber 6 away from the filter chamber 3. Other pipes can be conveniently connected externally through the connection port 9;

[0021] A liquid inlet pipe 10 is fixedly provided at the lower end of the cooling chamber 6. A liquid outlet pipe 11 is fixedly provided on one side of the upper end of the cooling chamber 6. Coolant is injected into the cooling chamber 6 through the liquid inlet pipe 10. Then the entire cooling chamber 6 is filled with coolant and then discharged from the liquid outlet pipe 11. At this time, the coolant inside the cooling chamber 6 can be in full contact with the gas inside the diverging pipe 8 to exchange heat. Thus, it can prevent the situation that the gas is overheated and sucked into the vacuum pump body 1, resulting in the rotor being jammed;

[0022] Locking screws 12 are fixedly provided between the sealing plate 5 and the filter chamber 3. By removing the sealing plate 5 through the locking screws 12, it is convenient to clean the filter screen inside the filter chamber 3;

[0023] On one side of the vacuum pump body 1, a motor 13 is fixedly arranged, and there is a transmission connection between the power output end of the motor 13 and the power input end of the vacuum pump body 1;

[0024] At the lower end of the vacuum pump body 1, a mounting bracket 14 is fixedly arranged, and through the mounting bracket 14, the whole device can be conveniently fixed and installed at the target position.

[0025] Working principle: When using this device, the air inhaled by the vacuum pump body 1 will be inhaled into the vacuum pump body 1 from the air inlet 2. The air entering from the air inlet 2 will first enter the shunt pipe 8. Through the shunt of the shunt pipe 8, the air can form multiple airflows. At this time, coolant is injected into the cooling chamber 6 through the liquid inlet pipe 10. Then the cooling chamber 6 is filled with the coolant and then discharged from the liquid outlet pipe 11. At this time, the coolant inside the cooling chamber 6 can be in full contact with the gas inside the shunt pipe 8 to exchange heat. Thus, it can prevent the situation that the gas is overheated and inhaled into the vacuum pump body 1, resulting in the rotor being stuck.

[0026] The air that has been shunted and cooled inside the shunt pipe 8 will finally converge back into the filter chamber 3, then pass through the filter element 4 for filtration, and then enter the air inlet 2. In this way, it can effectively prevent sundries from entering the vacuum pump body 1, resulting in the situation that the rotor inside the vacuum pump body 1 is stuck. And this device can disassemble the sealing plate 5 through the locking screw 12, which is convenient for cleaning the filter screen inside the filter chamber 3.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dry vacuum pump with an anti-stuck function, comprising a vacuum pump body (1), characterized in that: The vacuum pump body (1) is provided with an air inlet (2) at the upper end, and a filter mechanism for filtering the intake air is provided at the upper end of the air inlet (2), the filter mechanism comprising a filter chamber (3), a filter element (4), and a sealing plate (5). The filter chamber (3) is fixedly provided at the upper end of the air inlet (2), the filter element (4) is fixedly provided inside the filter chamber (3), and the sealing plate (5) is fixedly provided at the upper end of the filter chamber (3). A cooling mechanism for cooling the intake air is provided on one side of the surface of the filter chamber (3), and the cooling mechanism comprises a cooling chamber (6), a fixing plate (7), and a shunt pipe (8). The cooling chamber (6) is fixedly provided on one side of the surface of the filter chamber (3), the interior of the filter chamber (3) and the interior of the cooling chamber (6) are mutually conductive, the interior of the cooling chamber (6) is fixedly provided with fixing plates (7) on both sides of the interior of the cooling chamber (6), and the shunt pipe (8) is fixedly provided between the fixing plates (7).

2. The anti-stuck dry vacuum pump according to claim 1, characterized in that: A connection port (9) is fixedly provided at one end of the cooling chamber (6) away from the filtering chamber (3).

3. The anti-stuck dry vacuum pump according to claim 1, characterized in that: A liquid inlet pipe (10) is fixedly provided at the lower end of the cooling bin (6), and a liquid outlet pipe (11) is fixedly provided at one side of the upper end of the cooling bin (6).

4. The anti-seizure dry vacuum pump according to claim 1, characterized in that: A locking screw (12) is fixedly arranged between the sealing plate (5) and the filter bin (3).

5. The anti-seizure dry vacuum pump according to claim 1, characterized in that: An electric motor (13) is fixedly arranged on one side of the vacuum pump body (1), and a power output end of the electric motor (13) is transmission-connected to a power input end of the vacuum pump body (1).

6. The anti-seizure dry vacuum pump according to claim 1, characterized in that: A mounting frame (14) is fixedly provided at the lower end of the vacuum pump body (1).

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