A new type of air-cooled roots vacuum unit

Abstract

This utility model relates to the field of vacuum pump technology and discloses a novel air-cooled Roots vacuum unit, comprising: a vacuum assembly, the vacuum assembly including a chassis, a multi-stage Roots pump fixedly installed on the top right side of the chassis, the input end of the multi-stage Roots pump being connected to an air inlet pipe; and a filter assembly, the filter assembly including a housing, the housing fixedly installed on the other end of a filter plate frame, and a shell fixedly installed at the bottom of the housing. This novel air-cooled Roots vacuum unit, by setting up a filter assembly, allows the vertical rod to drive the frame and filter screen to rise and fall by rotating a knob. Adjusting the height of the filter screen facilitates its removal or installation from the inner cavity of the frame and housing, improving the convenience and speed of filter screen disassembly and cleaning, and avoiding excessive downtime of the multi-stage Roots pump due to prolonged filter screen disassembly and cleaning, thus facilitating operation.

Description

Technical Field

[0001] This utility model relates to a novel air-cooled Roots vacuum unit, belonging to the field of vacuum pump technology. Background Technology

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical, or physicochemical methods to evacuate a container and create a vacuum. In simpler terms, a vacuum pump is a device that improves, generates, and maintains a vacuum in a closed space using various methods. It is widely used in industries such as metallurgy, chemicals, food processing, and electronic coating. There are many types of vacuum pumps, including Roots vacuum units.

[0003] Chinese Patent Publication No. (CN 205744372 U) discloses a Roots reciprocating vacuum unit, belonging to the field of vacuum pump technology. It solves the problem that existing reciprocating vacuum pumps cannot meet the requirements of high vacuum and a wide operating pressure range. This Roots reciprocating vacuum unit includes a frame on which three Roots vacuum pumps are fixedly connected, arranged sequentially. The outlet of Roots vacuum pump one is connected to the inlet of Roots vacuum pump two, and the outlet of Roots vacuum pump two is connected to the inlet of Roots vacuum pump three. A reciprocating vacuum pump is also fixedly connected to the frame, and its inlet is connected to the outlet of Roots vacuum pump three via a buffer tank. An exhaust port is provided on the pump body of the reciprocating vacuum pump. This Roots reciprocating vacuum unit has a wide operating pressure range and a high vacuum level, and its structure is compact. Roots pumps are typically equipped with a filter at the air inlet to prevent foreign objects and particles from entering the pump chamber and damaging the rotor. However, traditional filter devices usually use bolts to install and remove the filter screen. After prolonged use, the filter screen may accumulate a lot of dust. When removing and cleaning the filter screen, it is often necessary to stop the Roots pump. Repeatedly tightening the bolts for installation and removal consumes a lot of time and effort, making the filter screen installation and removal inefficient and inconvenient for operators.

[0004] Therefore, a novel air-cooled Roots vacuum unit is proposed. Utility Model Content

[0005] In view of this, the present invention provides a novel air-cooled Roots vacuum unit to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0006] The technical solution of this utility model is achieved as follows: A novel gas-cooled Roots vacuum unit, comprising: A vacuum machine assembly includes a chassis. A multi-stage Roots pump is fixedly installed on the right side of the top of the chassis. The input end of the multi-stage Roots pump is connected to an inlet pipe, and the output end of the multi-stage Roots pump is connected to a connecting pipe. A first-section condenser is fixedly installed on the rear side of the top of the chassis, and a second-section condenser is fixedly installed on the front side of the top of the chassis. The input ends of both the first-section condenser and the second-section condenser are connected to each other via the connecting pipe. A first-section drain tank is fixedly installed on the left side of the top of the chassis. The input end of the first-section drain tank is connected to the output end of the first-section condenser. A second-section drain tank is fixedly installed on the left side of the top of the chassis. The input end of the second-section drain tank is connected to the output end of the second-section condenser. A water ring vacuum pump is fixedly installed on the top of the chassis. The output end of the water ring vacuum pump is connected to the input ends of both the first-section condenser and the second-section condenser. A filter assembly includes a housing, which is fixedly installed at the other end of an air intake pipe. A shell is fixedly installed at the bottom of the housing, and a knob is movably connected to the bottom of the shell. A screw is fixedly connected to the top of the knob, and a screw block is threaded onto the surface of the screw. Vertical rods are fixedly installed on the left and right sides of the top of the screw block. A frame is fixedly installed at the other end of the two vertical rods. A filter plate frame is inserted into the inner cavity of the frame, and a filter screen is fixedly installed on the inner side of the filter plate frame.

[0007] More preferably, both the front side of the frame surface and the front side of the filter plate frame surface are provided with positioning grooves, and positioning pins are inserted into the inner cavity of the positioning grooves.

[0008] More preferably, a mounting plate is provided on the top of the filter plate frame, and a sealing gasket is fixedly installed on the bottom of the mounting plate, with the bottom of the sealing gasket adhering to the top of the box body.

[0009] More preferably, the top left and right sides of the mounting plate are threaded with mounting bolts, and the bottom of the mounting bolts is threaded to the inner surface of the filter plate frame.

[0010] More preferably, guide grooves are provided on both the left and right sides of the inner cavity of the box, and the left and right sides of the frame are slidably connected to the inner cavities of the two guide grooves.

[0011] More preferably, slots are provided on both the left and right sides of the bottom of the box, and the two vertical rods pass through the inner cavities of the two slots and extend into the inner cavity of the box.

[0012] More preferably, a limiting groove is formed on the rear side of the inner cavity of the housing, and the rear side of the screw block is slidably connected to the inner cavity of the limiting groove.

[0013] More preferably, a flange is fixedly installed on the front side of the box body, and bolt holes are provided on the surface of the flange.

[0014] The present invention has the following advantages due to the adoption of the above technical solution: I. This utility model, by setting up a filter assembly, allows the vertical rod to drive the frame and filter screen to rise and fall by rotating the knob. Adjusting the height of the filter screen facilitates its removal or installation from the inner cavity of the frame and housing, improving the convenience and speed of filter screen disassembly and cleaning. It avoids situations where excessive time is spent on filter screen disassembly and installation, which could lead to prolonged downtime of the multi-stage Roots pump, making it convenient for operators to use.

[0015] II. This utility model, by setting positioning pins and positioning grooves, can easily confine the filter plate frame and filter screen within the inner cavity of the frame, ensuring the stability of the filter plate frame within the frame cavity. By setting a sealing gasket, the top of the box can be sealed to prevent air leakage through the top of the box. By setting mounting bolts, the mounting plate can be disassembled and assembled, facilitating the replacement of the sealing gasket after long-term aging. By setting a guide groove, the movement of the frame can be limited, ensuring the accuracy of the direction of the frame movement. By setting a slot, the movement of the vertical rod can be limited, ensuring the accuracy of the direction of the vertical rod movement. By setting a limiting groove, the screw block can be limited, preventing the screw block from rotating synchronously with the vertical rod. By setting a flange, the box can be easily connected to external equipment, facilitating the entry of gas into the air inlet pipe after filtration by the filter plate frame.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the disassembly and assembly components of this utility model; Figure 3 This is a schematic diagram of the screw structure of this utility model; Figure 4 This is a schematic diagram of the limiting groove structure of this utility model; Figure 5 This is a schematic diagram of the frame structure of this utility model; Figure 6 This is a schematic diagram of the disassembly structure of the filter plate frame of this utility model.

[0019] Reference numerals: 1. Vacuum machine assembly; 101. Chassis; 102. Multistage Roots pump; 103. Connecting pipe; 104. First-section condenser; 105. Second-section condenser; 106. First-section drain tank; 107. Second-section drain tank; 108. Inlet pipe; 109. Water ring vacuum pump; 2. Filter assembly; 201. Box; 202. Shell; 203. Knob; 204. Screw; 205. Screw block; 206. Vertical rod; 207. Frame; 208. Filter plate frame; 209. Filter screen; 210. Positioning groove; 211. Positioning pin; 212. Mounting plate; 213. Sealing gasket; 214. Mounting bolt; 215. Guide groove; 216. Slot; 217. Limiting groove; 218. Flange; 219. Bolt pre-drilled hole. Detailed Implementation

[0020] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0021] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] Example 1 Figures 1-6 As shown, this utility model embodiment provides a novel gas-cooled Roots vacuum unit, comprising: Vacuum machine assembly 1 includes a chassis 101. A multi-stage Roots pump 102 is fixedly installed on the right side of the top of the chassis 101. The input end of the multi-stage Roots pump 102 is connected to an inlet pipe 108, and the output end of the multi-stage Roots pump 102 is connected to a connecting pipe 103. A first-section condenser 104 is fixedly installed on the rear side of the top of the chassis 101, and a second-section condenser 105 is fixedly installed on the front side of the top of the chassis 101. The input ends of both the first-section condenser 104 and the second-section condenser 105 are connected to the connecting pipe 103. A first-section drain tank 106 is fixedly installed on the left side of the top of chassis 101. The input end of the first-section drain tank 106 is connected to the output end of the first-section condenser 104. A second-section drain tank 107 is fixedly installed on the left side of the top of chassis 101. The input end of the second-section drain tank 107 is connected to the output end of the second-section condenser 105. A water ring vacuum pump 109 is fixedly installed on the top of chassis 101. The output end of the water ring vacuum pump 109 is connected to the input end of the first-section condenser 104 and the second-section condenser 105. The filter assembly 2 includes a housing 201, which is fixedly installed at the other end of the air intake pipe 108. A shell 202 is fixedly installed at the bottom of the housing 201. A knob 203 is movably connected to the bottom of the shell 202. A screw 204 is fixedly connected to the top of the knob 203. A screw block 205 is threadedly connected to the surface of the screw 204. Vertical rods 206 are fixedly installed on the left and right sides of the top of the screw block 205. A frame 207 is fixedly installed at the other end of the two vertical rods 206. A filter plate frame 208 is inserted into the inner cavity of the frame 207. A filter screen 209 is fixedly installed on the inner side of the filter plate frame 208.

[0023] By setting up the filter assembly 2 and rotating the knob 203, the vertical rod 206 drives the frame 207 and the filter screen 209 to move up and down. Adjusting the height of the filter screen 209 makes it easier to remove or install it from the inner cavity of the frame 207 and the box 201, improving the convenience and speed of disassembling and cleaning the filter screen 209. This avoids the situation where the multi-stage Roots pump 102 is shut down for too long due to excessive time spent disassembling and installing the filter screen 209, making it more convenient for operators to use.

[0024] Example 2 Figures 2-6As shown, in one embodiment, positioning grooves 210 are provided on the front side of the surface of frame 207 and the front side of the surface of filter plate frame 208. Positioning pins 211 are inserted into the inner cavity of the positioning grooves 210. A mounting plate 212 is provided on the top of filter plate frame 208. A sealing gasket 213 is fixedly installed on the bottom of mounting plate 212. The bottom of the sealing gasket 213 is attached to the top of box body 201. Mounting bolts 214 are threaded to the left and right sides of the top of mounting plate 212. The bottom of the mounting bolts 214 is threaded to the inner surface of filter plate frame 208. The inner cavity of box body 201... Guide grooves 215 are provided on both the left and right sides. The left and right sides of the frame 207 are slidably connected to the inner cavities of the two guide grooves 215. Slots 216 are provided on both the left and right sides of the bottom of the box 201. Two vertical rods 206 pass through the inner cavities of the two slots 216 and extend into the inner cavity of the box 201. A limiting groove 217 is provided on the rear side of the inner cavity of the shell 202. The rear side of the screw block 205 is slidably connected to the inner cavity of the limiting groove 217. A flange 218 is fixedly installed on the front side of the box 201. Bolt pre-drilled holes 219 are provided on the surface of the flange 218.

[0025] By setting the positioning pin 211 and positioning groove 210, the filter plate frame 208 and filter screen 209 can be easily confined within the inner cavity of the frame 207, ensuring the stability of the filter plate frame 208 within the inner cavity of the frame 207. By setting the sealing gasket 213, the top of the box 201 can be sealed to prevent air from leaking through the top of the box 201. By setting the mounting bolt 214, the mounting plate 212 can be disassembled and assembled, facilitating the replacement of the sealing gasket 213 after long-term aging. By setting the guide groove 21... 5. The movement of the frame 207 can be limited, ensuring the accuracy of the direction of the frame 207 movement. By setting the slot 216, the movement of the vertical rod 206 can be limited, ensuring the accuracy of the direction of the vertical rod 206 movement. By setting the limiting groove 217, the screw block 205 can be limited, preventing the screw block 205 from rotating synchronously with the vertical rod 206. By setting the flange 218, the box 201 can be easily connected to external equipment, and the gas can easily enter the air inlet pipe 108 through the filtration of the filter plate frame 208.

[0026] In operation, this invention works as follows: Gas is drawn in through the inlet pipe 108 via the output of the multi-stage Roots pump 102. This gas then passes through the connecting pipe 103, the first-section condenser 104, the second-section condenser 105, the first-section drain tank 106, and the second-section drain tank 107 to achieve overall vacuum operation. When the filter screen 209 is covered with dust and requires cleaning, rotating the knob 203 causes the screw 204 to rotate synchronously. At this time, the screw block 205 drives the vertical rod 206 and the frame 207 to move upwards. The frame 207 simultaneously moves the filter plate frame 208 and the filter screen 209, causing the frame 207 to move out of the inner cavity of the housing 201. Then, the positioning pin 211 is pulled out, releasing the filter plate frame. The filter plate frame 208 is confined within the cavity of the frame 207. Then, the mounting plate 212 is pulled upwards, causing the filter plate frame 208 and the filter screen 209 to be removed from the cavity of the frame 207, thus disassembling the filter screen 209. After the filter screen 209 is cleaned, the filter plate frame 208 is reinserted into the cavity of the frame 207. Then, the positioning pin 211 is inserted into the cavity of the positioning groove 210 to confine the filter plate frame 208 again. Then, the knob 203 is rotated in the opposite direction. At this time, the knob 203 drives the screw 204 to rotate synchronously, thereby causing the screw block 205 to drive the vertical rod 206 and the frame 207 to move downwards synchronously, so that the frame 207 moves into the cavity of the box 201, completing the installation of the filter screen 209.

[0027] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A new type of air-cooled Roots vacuum unit, characterized in that, include: A vacuum machine assembly (1) includes a chassis (101). A multi-stage Roots pump (102) is fixedly installed on the right side of the top of the chassis (101). The input end of the multi-stage Roots pump (102) is connected to an inlet pipe (108), and the output end of the multi-stage Roots pump (102) is connected to a connecting pipe (103). A first-section condenser (104) is fixedly installed on the rear side of the top of the chassis (101), and a second-section condenser (105) is fixedly installed on the front side of the top of the chassis (101). The input ends of both the first-section condenser (104) and the second-section condenser (105) are connected to the connecting pipe (103). The chassis (101) is equipped with a first interval drain tank (106) fixedly installed on the left side of the top. The input end of the first interval drain tank (106) is connected to the output end of the first interval condenser (104). The chassis (101) is equipped with a second interval drain tank (107) fixedly installed on the left side of the top. The input end of the second interval drain tank (107) is connected to the output end of the second interval condenser (105). The chassis (101) is equipped with a water ring vacuum pump (109) fixedly installed on the top. The output end of the water ring vacuum pump (109) is connected to the input ends of the first interval condenser (104) and the second interval condenser (105). The filter assembly (2) includes a housing (201), which is fixedly installed at the other end of the air inlet pipe (108). A shell (202) is fixedly installed at the bottom of the housing (201). A knob (203) is movably connected to the bottom of the shell (202). A screw (204) is fixedly connected to the top of the knob (203). A screw block (205) is threadedly connected to the surface of the screw (204). Vertical rods (206) are fixedly installed on the left and right sides of the top of the screw block (205). A frame (207) is fixedly installed at the other end of the two vertical rods (206). A filter plate frame (208) is inserted into the inner cavity of the frame (207). A filter screen (209) is fixedly installed on the inner side of the filter plate frame (208).

2. A new type of air-cooled Roots vacuum unit according to claim 1, characterized in that: Positioning grooves (210) are provided on the front side of the surface of the frame (207) and the front side of the surface of the filter plate frame (208), and positioning pins (211) are inserted into the inner cavity of the positioning grooves (210).

3. The novel air-cooled Roots vacuum unit according to claim 1, characterized in that: The top of the filter plate frame (208) is provided with an installation plate (212), and a sealing gasket (213) is fixedly installed at the bottom of the installation plate (212). The bottom of the sealing gasket (213) is attached to the top of the box body (201).

4. A new type of air-cooled Roots vacuum unit according to claim 3, characterized in that: The top left and right sides of the mounting plate (212) are threaded with mounting bolts (214), and the bottom of the mounting bolts (214) is threaded to the inner surface of the filter plate frame (208).

5. A novel air-cooled Roots vacuum unit according to claim 1, characterized in that: The left and right sides of the inner cavity of the box (201) are provided with guide grooves (215), and the left and right sides of the frame (207) are slidably connected to the inner cavities of the two guide grooves (215).

6. A novel air-cooled Roots vacuum unit according to claim 1, characterized in that: The bottom of the box (201) has slots (216) on both the left and right sides. The two vertical rods (206) pass through the inner cavity of the two slots (216) and extend into the inner cavity of the box (201).

7. A new type of air-cooled Roots vacuum unit according to claim 1, characterized in that: A limiting groove (217) is provided on the rear side of the inner cavity of the housing (202), and the rear side of the screw block (205) is slidably connected to the inner cavity of the limiting groove (217).

8. A novel air-cooled Roots vacuum unit according to claim 1, characterized in that: A flange (218) is fixedly installed on the front side of the box (201), and bolt pre-drilled holes (219) are provided on the surface of the flange (218).

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