Novel vacuum pump

Abstract

The utility model provides a novel vacuum pump and belongs to the technical field of water pumps. The problems that gas extracted by an existing vacuum pump possibly contains a large amount of broken scrap iron, and abrasion is caused to transmission parts in the vacuum pump are solved. The novel vacuum pump comprises a pump body, an air inlet pipeline used for air inlet and an air outlet pipeline used for air outlet are arranged on the pump body, the air inlet pipeline is composed of a first connecting pipeline and a second connecting pipeline, an open groove is formed in the first connecting pipeline, and a filtering device used for filtering is arranged at the position, opposite to the open groove, of the first connecting pipeline. The filtering device is composed of a mounting part, a sealing part, a filtering framework and a filtering net, a stepped groove is formed in the position, located at the open groove, of the connecting pipeline, the sealing part extends into the open groove and is matched with the stepped groove, a fixing rod is arranged on the first connecting pipeline, a positioning assembly is arranged on the fixing rod, and the positioning assembly is composed of a positioning piece and a reset spring. The filter has the advantage that the filter screen is convenient to disassemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pumps, and in particular relates to a novel vacuum pump. Background Art

[0002] A vacuum pump is a device or equipment that creates a vacuum by evacuating a container using mechanical, physical, chemical, or physicochemical methods. Generally speaking, a vacuum pump is a device that uses various methods to improve, create, and maintain a vacuum in a closed space. Based on their operating principles, vacuum pumps can be broadly divided into two types: gas capture pumps and gas transfer pumps. They are widely used in industries such as metallurgy, chemicals, food processing, and electronic coating.

[0003] Due to the special operating environment of vacuum pumps, such as in vacuum heat treatment industries, the gas extracted by the vacuum pump is likely to contain a lot of broken iron filings. The tiny iron filings can still pass through the filter and enter the vacuum pump, causing wear and tear on the transmission components inside the vacuum pump. In the chemical industry, the gas extracted by the vacuum pump is likely to contain corrosive gases such as ammonia or chlorine. These gases entering the vacuum pump will cause corrosion and wear on the transmission components of the vacuum pump. Summary of the Invention

[0004] The purpose of the utility model is to solve the above problems existing in the prior art and to provide a new vacuum pump with reasonable design, simple structure and convenient filter screen removal.

[0005] The purpose of the utility model can be achieved through the following technical solutions: A new vacuum pump, comprising a pump body, wherein the pump body is provided with an intake pipe for air intake and an outlet pipe for air exhaust, characterized in that the intake pipe consists of a connecting pipe one and a connecting pipe two, the connecting pipe one is provided with a slot, and a filter device for filtering is provided on the connecting pipe one and at a position relative to the slot, the filter device consists of a mounting portion, a sealing portion, a filter skeleton and a filter screen, the filter screen is provided on the filter skeleton, one end of the filter skeleton extends into the connecting pipe one, and the filter screen filters the gas entering the intake pipe, the connecting pipe is provided with a stepped groove at the slot, the sealing portion extends into the groove and fits into the stepped groove, the connecting pipe one is provided with a fixing rod for installing the filter device, the fixing rod is provided with a positioning assembly for positioning the filter device, the positioning assembly consists of a positioning member and a return spring, the positioning member extends on the fixing rod so as to fix the filter device on the connecting pipe one.

[0006] In the above-mentioned new vacuum pump, an installation groove for installing the positioning component is provided on the fixing rod, one end of the positioning member is arranged in the installation groove, and the other end of the positioning member extends out of the installation groove and abuts against the upper end surface of the mounting part, and the positioning member is retracted in the installation groove by a reset spring.

[0007] In the above-mentioned novel vacuum pump, there are four fixing rods, and two positioning components are provided on each fixing rod.

[0008] In the above-mentioned novel vacuum pump, the connecting pipe 1 is arranged in a square structure, the connecting pipe 2 is arranged in a circular structure, and the connecting pipe 1 and the connecting pipe 2 are arranged as an integral unit.

[0009] Compared with the existing technology, the new vacuum pump fixes the filter device on the connecting pipe one through the fixing rod and the positioning assembly on the connecting pipe one. When the filter device needs to be disassembled, it is only necessary to release the positioning of the positioning assembly to disassemble the filter device, which is convenient for the staff to repair and clean the filter screen of the filter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the present utility model.

[0011] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model.

[0012] In the figure, 1. pump body; 2. air intake pipe; 3. connecting pipe 1; 4. connecting pipe 2; 5. filter device; 6. mounting part; 7. sealing part; 8. filter frame; 9. filter screen; 10. fixing rod; 11. positioning assembly; 12. positioning part; 13. return spring. DETAILED DESCRIPTION

[0013] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0014] like Figure 1 、 Figure 2As shown, the new vacuum pump includes a pump body 1, on which an air intake pipe 2 for air intake and an air outlet pipe for air outlet are provided. The air intake pipe is composed of a connecting pipe 1 3 and a connecting pipe 2 4. A slot is provided on the connecting pipe 1 3. A filter device 5 for filtering is provided on the connecting pipe 1 3 at a position relative to the slot. The filter device 5 consists of a mounting portion 6, a sealing portion 7, a filter skeleton 8 and a filter screen 9. The filter screen 9 is provided on the filter skeleton 8. One end of the filter skeleton 8 extends into the connecting pipe 1 3. The filter screen 9 filters the gas entering the air intake pipe 2. A stepped groove is provided on the connecting pipe at the slot. The sealing portion 7 extends into the slot and fits into the stepped groove. A fixing rod 10 for installing the filter device 5 is provided on the connecting pipe 3. A positioning assembly 11 for positioning the filter device 5 is provided on the fixing rod 10. The positioning assembly 11 consists of a positioning member 12 and a reset spring 13. The positioning member 12 extends from the fixing rod 10 to fix the filter device 5 on the connecting pipe 3.

[0015] To be more specific, the gas enters the pump body 1 from the air inlet pipe 2, first enters the connecting pipe 1 3 from the connecting pipe 2 4, and is filtered by the filter 9 of the filter device 5 set on the connecting pipe 1 3, and finally enters the pump body 1.

[0016] To be more specific, when the filter device 5 needs to be disassembled, pressure is applied to the positioning member 12 to compress the return spring 13, thereby releasing the positioning of the positioning member 12 on the mounting portion 6 of the filter device 5. The staff can then remove the mounting portion 6 from the fixing rod 10 of the connecting pipe 3 and clean and maintain the filter screen 9 on the filter device 5.

[0017] To be more specific, a mounting groove for installing the positioning assembly 11 is provided on the fixing rod 10, one end of the positioning member 12 is arranged in the mounting groove, and the other end of the positioning member 12 extends out of the mounting groove and abuts against the upper end surface of the mounting portion 6, and the positioning member 12 is retracted in the mounting groove by a reset spring 13.

[0018] To be more specific, there are four fixing rods 10 , and two positioning components 11 are provided on each fixing rod 10 .

[0019] To be more specific, the connecting pipe 1 3 is a square structure, the connecting pipe 2 4 is a circular structure, and the connecting pipe 1 3 and the connecting pipe 2 4 are integrally formed.

[0020] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0021] Although this document frequently uses terms such as pump body 1, air intake pipe 2, connecting pipe 1 3, connecting pipe 2 4, filter device 5, mounting portion 6, sealing portion 7, filter frame 8, filter screen 9, fixing rod 10, positioning assembly 11, positioning member 12, and return spring 13, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A novel vacuum pump, comprising a pump body (1), wherein the pump body (1) is provided with an air inlet pipe (2) for air intake and an air outlet pipe for air discharge, characterized in that: The air intake duct is composed of a connecting duct 1 (3) and a connecting duct 2 (4). A slot is provided on the connecting duct 1 (3). A filter device (5) for filtering is provided on the connecting duct 1 (3) at a position relative to the slot. The filter device (5) is composed of a mounting portion (6), a sealing portion (7), a filter frame (8) and a filter screen (9). The filter screen (9) is provided on the filter frame (8). One end of the filter frame (8) extends into the connecting duct 1 (3), and the filter screen (9) filters the gas entering the air intake duct (2). A stepped groove is provided on the connecting pipe at the slot, the sealing portion (7) extends into the slot and fits into the stepped groove, a fixing rod (10) for installing the filter device (5) is provided on the connecting pipe (3), a positioning assembly (11) for positioning the filter device (5) is provided on the fixing rod (10), the positioning assembly (11) is composed of a positioning member (12) and a return spring (13), the positioning member (12) extends from the fixing rod (10) to fix the filter device (5) on the connecting pipe (3).

2. A novel vacuum pump according to claim 1, characterized in that: The fixing rod (10) is provided with an installation groove for installing the positioning assembly (11), one end of the positioning member (12) is arranged in the installation groove, and the other end of the positioning member (12) extends out of the installation groove and abuts against the upper end surface of the mounting portion (6), and the positioning member (12) is retracted in the installation groove by a return spring (13).

3. A novel vacuum pump according to claim 1, characterized in that: There are four fixing rods (10), and two positioning components (11) are provided on each fixing rod (10).

4. A novel vacuum pump according to claim 1, characterized in that: The connecting pipe 1 (3) is a square structure, the connecting pipe 2 (4) is a circular structure, and the connecting pipe 1 (3) and the connecting pipe 2 (4) are integrally formed.

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