Dustproof air inlet structure for oilless vacuum pump

Abstract

The utility model belongs to the technical field of dust prevention, and discloses a dustproof air inlet structure for an oilless vacuum pump, which comprises a bottom plate, a pump body is fixedly mounted on the surface of the bottom plate, an air outlet pipe is fixedly mounted at the right end of the pump body, an air inlet pipe is fixedly mounted at the front end of the pump body, and a connecting pipe is arranged at one end, far away from the pump body, of the air inlet pipe. The outer side of the end, close to the connecting pipe, of the air inlet pipe is fixedly connected with a connecting base, the end, close to the connecting pipe, of the connecting base abuts against a connecting ring, and the inner wall of the connecting ring is fixedly connected with the outer end of the connecting pipe. The air inlet pipe and the connecting pipe can be separated conveniently, the filter block can be taken out and replaced conveniently, the mounting ring is inserted into the connecting groove, the clamping rod is extruded outwards through the conical ring, the clamping rod and the clamping groove are connected through the action of the elastic block, and the connecting pipe and the air inlet pipe can be connected rapidly and conveniently.

Description

Technical Field

[0001] This utility model relates to the field of dustproof technology, specifically to a dustproof air intake structure for an oil-free vacuum pump. Background Technology

[0002] An oil-free vacuum pump is a type of mechanical vacuum pump that operates without any oil lubrication. It is characterized by its simple structure, ease of operation, and convenient maintenance. It works by using moving mechanical parts to change volume; when the volume is large, air is drawn in, and when the volume decreases (pressure increases), air is expelled. This method requires very small clearances and high precision.

[0003] When the volume is large, it will draw in a lot of air, including dust and other impurities, which will affect the performance of the vacuum pump over time. In addition, the installation of a typical pump body dust cover is quite complicated, causing inconvenience to the installer. Therefore, further improvements are needed.

[0004] To address these shortcomings, a dustproof air intake structure for oil-free vacuum pumps is proposed, which upgrades and modifies the existing device. Utility Model Content

[0005] The purpose of this utility model is to provide a dustproof air intake structure for an oil-free vacuum pump in order to solve the problems in the background technology.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A dustproof air intake structure for an oil-free vacuum pump includes a base plate, a pump body fixedly mounted on the surface of the base plate, an outlet pipe fixedly mounted on the right end of the pump body, an inlet pipe fixedly mounted on the front end of the pump body, a connecting pipe at the end of the inlet pipe away from the pump body, a connecting seat fixedly connected to the outer side of the end of the inlet pipe near the connecting pipe, a connecting ring abutting the end of the connecting seat near the connecting pipe, the inner wall of the connecting ring fixedly connected to the outer end of the connecting pipe, a filter block provided on the inner wall of the connecting pipe, a connecting groove formed on the surface of the end of the connecting ring near the connecting seat, an mounting ring abutting the inner wall of the connecting groove, the end of the mounting ring away from the connecting groove fixedly connected to the outer end of the connecting seat, locking rods slidably connected to the inner walls of the upper and lower ends of the connecting ring, a connecting block fixedly connected to the upper end of the locking rods extending out of the outer end of the connecting ring, a pull ring fixedly mounted on the outer end of the connecting block, and locking grooves for locking the outer ends of the locking rods formed on both sides of the outer end of the mounting ring.

[0008] Furthermore, a tapered ring is fixedly connected to the inner wall of the mounting ring near the connecting groove.

[0009] Furthermore, a retaining ring is fixedly connected to the outer end of the lever, an elastic block is fixedly installed at the outer end of the retaining ring, and the other end of the elastic block is fixedly installed to the inner wall of the connecting ring.

[0010] Furthermore, the surface of the connecting ring is provided with a T-shaped groove, the inner wall of the T-shaped groove is inlaid with a sealing ring, and the end of the connecting seat near the connecting ring is provided with a sealing groove for matching the outer end of the sealing ring.

[0011] Furthermore, a cross-shaped baffle is fixedly connected to the inner wall of the connecting pipe, the outer end of the cross-shaped baffle abuts against one end of the filter block, and a grid is fixedly installed on the inner wall side of the connecting pipe away from the cross-shaped baffle.

[0012] Furthermore, a cross-shaped baffle is fixedly installed on the inner wall of the air intake pipe, and the outer end of the cross-shaped baffle abuts against one end of the filter block.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention allows the connecting block to disengage from the groove on the surface of the mounting ring by pulling the ring outward, thus moving the connecting pipe outward. This facilitates the separation of the air intake pipe from the connecting pipe and makes it easy to remove and replace the filter block. Conversely, inserting the mounting ring into the connecting groove and pressing the rod outward through the conical ring, along with the action of the elastic block, allows the rod to connect to the groove, facilitating a quick connection between the connecting pipe and the air intake pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the intake pipe and connecting pipe structure of this utility model;

[0017] Figure 3 This is an internal sectional view of the connection between the air intake pipe and the connecting pipe of this utility model;

[0018] Figure 4 This is a utility model Figure 3 Enlarged view of point A in the middle.

[0019] Reference numerals: 1. Base plate; 10. Pump body; 11. Air outlet pipe; 12. Air inlet pipe; 13. Connecting pipe; 14. Connecting seat; 15. Connecting ring; 151. Connecting groove; 152. Sealing ring; 153. Slot; 154. Sealing groove; 155. Mounting ring; 157. T-groove; 16. Cross stop bar one; 17. Filter block; 171. Cross stop bar two; 18. Pull ring; 19. Connecting block; 191. Locking rod; 192. Elastic block; 193. Retaining ring; 194. Conical ring. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] like Figures 1 to 4As shown, a dustproof air intake structure for an oil-free vacuum pump includes a base plate 1. A pump body 10 is fixedly mounted on the surface of the base plate 1. An outlet pipe 11 is fixedly mounted on the right end of the pump body 10. An inlet pipe 12 is fixedly mounted on the front end of the pump body 10. A connecting pipe 13 is provided at the end of the inlet pipe 12 away from the pump body 10. A connecting seat 14 is fixedly connected to the outer side of the end of the inlet pipe 12 near the connecting pipe 13. A connecting ring 15 abuts against the end of the connecting seat 14 near the connecting pipe 13. The inner wall of the connecting ring 15 is fixedly connected to the outer end of the connecting pipe 13. The inner wall of the connecting pipe 13 is provided with... The filter block 17 has a connecting groove 151 on the surface of the connecting ring 15 near the connecting seat 14. The inner wall of the connecting groove 151 abuts against the mounting ring 155. The end of the mounting ring 155 away from the connecting groove 151 is fixedly connected to the outer end of the connecting seat 14. The upper and lower inner walls of the connecting ring 15 are slidably connected to the locking rod 191. The upper end of the locking rod 191 extends out of the outer end of the connecting ring 15 and is fixedly connected to the connecting block 19. The outer end of the connecting block 19 is fixedly installed with a pull ring 18. The outer ends of the mounting ring 155 are provided with locking grooves 153 for locking the outer end of the locking rod 191.

[0025] Specifically, by pulling the pull ring 18 outward, the connecting block 19 causes the locking rod 191 to disengage from the locking groove 153 on the surface of the mounting ring 155, and the connecting pipe 13 moves outward, making it easier to separate the air intake pipe 12 from the connecting pipe 13, and to facilitate the removal and replacement of the filter block 17.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a conical ring 194 is fixedly connected to the inner wall of the mounting ring 155 near the connecting groove 151; specifically, the conical ring 194 presses the locking rod 191 outward, so that the mounting ring 155 can easily enter the interior of the connecting groove 151.

[0027] like Figure 2 , Figure 3 and Figure 4 As shown, a retaining ring 193 is fixedly connected to the outer end of the lever 191, and an elastic block 192 is fixedly installed on the outer end of the retaining ring 193. The other end of the elastic block 192 is fixedly installed on the inner wall of the connecting ring 15. Specifically, the lever 191 is connected to the slot 153 by the action of the elastic block 192, so that the connecting pipe 13 and the air intake pipe 12 can be quickly connected.

[0028] like Figure 2 , Figure 3 and Figure 4As shown, a T-shaped groove 157 is provided on the surface of the connecting ring 15, and a sealing ring 152 is embedded in the inner wall of the T-shaped groove 157. A sealing groove 154 is provided at one end of the connecting seat 14 near the connecting ring 15 to match the outer end of the sealing ring 152. Specifically, the sealing ring 152 is connected to the sealing groove 154 to improve the sealing performance after the connecting pipe 13 is connected to the air intake pipe 12.

[0029] like Figure 1 and Figure 2 As shown, a cross-shaped baffle 16 is fixedly connected to the inner wall of the connecting pipe 13. The outer end of the cross-shaped baffle 16 abuts against one end of the filter block 17. A grid is fixedly installed on the inner wall of the connecting pipe 13 away from the cross-shaped baffle 16. A cross-shaped baffle 171 is fixedly installed on the inner wall of the air intake pipe 12. The outer end of the cross-shaped baffle 171 abuts against one end of the filter block 17. Specifically, the filter block 17 is fixed by the cross-shaped baffle 17 and the cross-shaped baffle 171.

[0030] In summary: When the filter block 17 inside the air intake pipe 12 of the pump body 1 needs to be replaced, by pulling the pull ring 18 outward, the connecting block 19 drives the locking rod 191 to disengage from the slot 153 on the surface of the mounting ring 155. The connecting pipe 13 is moved outward, so that the mounting ring 155 is separated from the connecting slot 151, making it easy to separate the air intake pipe 12 from the connecting pipe 13, and to facilitate the removal and replacement of the filter block 17. The new filter block 17 is inserted into the connecting pipe 13, and the mounting ring 155 is inserted into the connecting slot 151. The locking rod 191 is pressed outward by the conical ring 194, and the connecting pipe 13 is rotated so that the locking rod 191 is on the upper side of the slot 153. Through the action of the elastic block 192, the locking rod 191 is connected to the slot 153, which facilitates the quick connection between the connecting pipe 13 and the air intake pipe 12.

[0031] The sealing performance of the connecting pipe 13 and the air intake pipe 12 is improved by connecting the sealing ring 152 with the sealing groove 154.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dustproof air inlet structure for an oil-free vacuum pump, comprising a bottom plate (1), characterized in that: A pump body (10) is fixedly installed on the surface of the base plate (1). An air outlet pipe (11) is fixedly installed on the right end of the pump body (10). An air inlet pipe (12) is fixedly installed on the front end of the pump body (10). A connecting pipe (13) is provided at the end of the air inlet pipe (12) away from the pump body (10). A connecting seat (14) is fixedly connected to the outer side of the end of the air inlet pipe (12) near the connecting pipe (13). A connecting ring (15) abuts against the end of the connecting seat (14) near the connecting pipe (13). The inner wall of the connecting ring (15) is fixedly connected to the outer end of the connecting pipe (13). A filter block (17) is provided on the inner wall of the connecting pipe (13). A connecting groove (151) is provided on the surface of the ring (15) near the connecting seat (14). The inner wall of the connecting groove (151) abuts against the mounting ring (155). The end of the mounting ring (155) away from the connecting groove (151) is fixedly connected to the outer end of the connecting seat (14). The inner walls of the upper and lower ends of the connecting ring (15) are slidably connected with a locking rod (191). The upper end of the locking rod (191) extends out of the outer end of the connecting ring (15) and is fixedly connected to a connecting block (19). The outer end of the connecting block (19) is fixedly installed with a pull ring (18). The outer ends of the mounting ring (155) are provided with locking grooves (153) for locking the outer end of the locking rod (191).

2. The dustproof air inlet structure for an oil-free vacuum pump according to claim 1, characterized in that: The mounting ring (155) is fixedly connected to a tapered ring (194) near the inner wall of the connecting groove (151).

3. The dustproof air inlet structure for an oil-free vacuum pump according to claim 1, characterized in that: The outer end of the lever (191) is fixedly connected to a retaining ring (193), and the outer end of the retaining ring (193) is fixedly installed with an elastic block (192). The other end of the elastic block (192) is fixedly installed with the inner wall of the connecting ring (15).

4. The dustproof air inlet structure for an oil-free vacuum pump according to claim 1, characterized in that: The surface of the connecting ring (15) is provided with a T-shaped groove (157), and the inner wall of the T-shaped groove (157) is inlaid with a sealing ring (152). The connecting seat (14) is provided with a sealing groove (154) at one end near the connecting ring (15) for matching the outer end of the sealing ring (152).

5. The dustproof air inlet structure for an oil-free vacuum pump according to claim 1, characterized in that: The inner wall of the connecting pipe (13) is fixedly connected to a cross-shaped stop bar (16), the outer end of the cross-shaped stop bar (16) abuts against one end of the filter block (17), and a grid is fixedly installed on the inner wall side of the connecting pipe (13) away from the cross-shaped stop bar (16).

6. The dustproof air inlet structure for an oil-free vacuum pump according to claim 1, characterized in that: The inner wall of the air intake pipe (12) is fixedly installed with a cross-shaped baffle (171), and the outer end of the cross-shaped baffle (171) abuts against one end of the filter block (17).

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