CN221257832U

CN221257832U - Roots blower relief valve

Info

Publication number: CN221257832U
Application number: CN202322994154.4U
Authority: CN
Inventors: 毛法良; 毛文雨; 何沛
Original assignee: Yixing Unite Machinery Co ltd
Current assignee: Yixing Unite Machinery Co ltd
Priority date: 2023-11-07
Filing date: 2023-11-07
Publication date: 2024-07-02
Anticipated expiration: 2033-11-07

Abstract

The utility model belongs to the field of pressure relief valves of Roots fans, in particular to a pressure relief valve of a Roots fan, which aims at the problems that an existing valve body is connected with a valve rod through threads, the valve rod is positioned at the top of the pressure relief valve and is exposed outside, after the pressure relief valve is used for a long time, the valve rod and the valve body are exposed outside, a thread groove exposed outside the valve rod is easy to rust, so that the valve rod and the valve body are possibly stuck together, and the pressure relief valve is difficult to adjust.

Description

Roots blower relief valve

Technical Field

The utility model relates to the technical field of Roots blower pressure relief valves, in particular to a Roots blower pressure relief valve.

Background

Roots blower belongs to positive displacement blower, and has impeller end face and front and back end covers. The principle is a rotary compressor which compresses and delivers gas by means of the relative movement of two lobed rotors in a cylinder. The air blower has simple structure and convenient manufacture, is widely applied to oxygenation, sewage treatment aeration and cement transportation, is more suitable for a gas transportation and pressurization system in low-pressure occasions, and can also be used as a vacuum pump and the like.

Through retrieving, the patent of publication number CN213361219U discloses an adjustable relief valve for Roots blower, including last valve body, well valve body and lower valve body, well valve body is greater than last valve body and lower valve body along the direction of height cross section area of valve body, still includes cylindric valve plate that can follow the valve body direction of height and have can shutoff well valve body and lower valve body junction open-ended bottom surface, and the cylindric bottom surface of valve plate has the quiet pole that extends to set gradually, spring and moves the pole bolt, moves the pole bolt and passes through the valve gap of last valve body and moves the nut of pole bolt and arrange the upper valve gap outward. The movable rod bolt is provided with a pointer which is fixed on the bolt and can do circular motion outside the upper valve cover, and the pointer can be matched with a disk-shaped air pressure dial on the outer surface of the upper valve cover. By adopting the design of the utility model, the structure is simple, and the pressure relief critical value of the pressure relief valve can be indirectly adjusted by rotating the tightness of the movable rod bolt.

However, the technical scheme has the following problems: through threaded connection between valve body and the valve rod, the valve rod is located the top of relief valve and exposes outside, and after the relief valve used for a long time, valve rod and valve body expose outside thread groove rust easily, lead to valve rod and valve body probably to glue together for the relief valve is difficult for adjusting.

Disclosure of utility model

The utility model aims to solve the defects that in the prior art, a valve body is connected with a valve rod through threads, the valve rod is positioned at the top of a pressure relief valve and is exposed outside, after the pressure relief valve is used for a long time, a thread groove exposed outside between the valve rod and the valve body is easy to rust, the valve rod and the valve body are possibly stuck together, and the pressure relief valve is difficult to adjust.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The pressure relief valve of the Roots blower comprises a valve body and a connecting ring, wherein a valve rod for adjusting the pressure relief valve is arranged at the top of the valve body, the valve body is of a hollow structure, the bottom of the valve body is fixedly connected with the top of the connecting ring, and a thread groove which is convenient for interconnecting the pressure relief valve with a pipeline or equipment is formed in the outer side of the connecting ring;

The shielding mechanism is arranged on the outer side of the valve body and used for shielding the joint of the valve rod and the valve body.

In a possible design, shelter from mechanism includes shelter from section of thick bamboo, roof, solid fixed ring, two draw-in holes, two spliced poles and two fixture blocks, gu fixed ring's inner wall and the outside fixed connection of valve body, two the draw-in holes all set up on same solid fixed ring, shelter from section of thick bamboo setting on gu fixed ring, the bottom of roof and the top fixed connection who shelters from the section of thick bamboo, offered the observation window that is used for observing the valve rod on the roof, be provided with the ya keli board on the inner wall of observation window, shelter from the bottom both sides of section of thick bamboo respectively with the one end fixed connection of two spliced poles, two the other end of spliced pole respectively with the top of two fixture blocks through the bearing rotation connection, two the fixture block respectively with two draw-in holes agree with each other.

In one possible design, two holding grooves for holding and opening the shielding cylinder are formed in the outer side of the shielding cylinder.

In one possible design, the outside of the valve body is fixedly connected with a hexagonal ring which is convenient for disassembly, overhaul or replacement of the valve body.

In one possible design, a sealing ring for sealing the joint of the valve body and the pipeline or the equipment is fixedly connected to the bottom of the valve body, the sealing ring is located on the outer side of the connecting ring, and the size of the sealing ring is larger than that of the connecting ring.

In one possible design, the bottom of the connection ring is configured as a curved edge that facilitates interconnecting the connection ring with a pipe or device connection.

According to the application, when the valve is used, the connecting ring at the bottom of the valve body is in threaded connection with the connecting part of a pipeline or equipment through the arc edge, the connecting part is sealed under the action of the sealing ring, when the valve body needs to regulate the pressure release valve by using the valve rod, the clamping block is rotated through the bearing, the clamping block corresponds to the clamping hole, the shielding cylinder is lifted up through the holding groove, the shielding cylinder drives the connecting column and the clamping block to leave the clamping hole, the shielding cylinder and the fixing ring are separated from each other, the pressure release valve is regulated through the valve rod, so that the connecting part between the valve rod and the valve body and the threads on the valve rod are covered to prevent the pressure release valve from rusting, the normal regulation of the valve rod on the pressure release valve is ensured, the service life of the pressure release valve is prolonged, and the working principle of the valve body is the same as that of the patent with publication number CN213361219U and is described in detail in a comparison document, so that redundant description is not carried out in the text.

According to the Roots blower pressure relief valve, the connecting part between the valve rod and the valve body and the threads on the valve rod can be covered through the covering mechanism, so that the valve rod is prevented from rusting, the normal adjustment of the valve rod to the pressure relief valve is further ensured, and the service life of the pressure relief valve is prolonged;

According to the utility model, the connecting part between the valve rod and the valve body is shielded through the shielding mechanism, so that the probability of rusting at the connecting part is reduced, the normal threaded rotation between the valve rod and the valve body is ensured, the normal regulation of the valve rod on the pressure release valve is further ensured, and the service life of the pressure release valve is prolonged.

Drawings

Fig. 1 is a schematic diagram of a front view structure of a Roots blower pressure release valve according to the present utility model;

fig. 2 is a schematic diagram of a shielding structure of a Roots blower pressure release valve according to the present utility model;

FIG. 3 is a schematic diagram of a connection structure of a Roots blower relief valve according to the present utility model;

fig. 4 is a schematic sectional view of a fixing structure of a Roots blower pressure release valve according to the present utility model.

1. A shielding cylinder; 2. a top plate; 3. a holding groove; 4. a fixing ring; 5. a valve body; 6. a hexagonal ring; 7. a seal ring; 8. a connecting ring; 9. a thread groove; 10. a clamping hole; 11. a connecting column; 12. and (5) clamping blocks.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Examples

Referring to fig. 1-4, a Roots blower relief valve, comprising: the valve comprises a valve body 5 and a connecting ring 8, wherein a valve rod for adjusting a pressure relief valve is arranged at the top of the valve body 5, the valve body 5 is of a hollow structure, the bottom of the valve body 5 is fixedly connected with the top of the connecting ring 8, and a thread groove 9 which is convenient for connecting the pressure relief valve with a pipeline or equipment is formed in the outer side of the connecting ring 8;

The shielding mechanism is arranged outside the valve body 5 and used for shielding the joint of the valve rod and the valve body 5.

Above-mentioned technical scheme, through covering the mechanism, shelter from the junction between valve rod and the valve body 5, reduce the rusty probability of junction, guarantee the normal screw thread rotation between valve rod and the valve body 5, and then guarantee the valve rod and to the normal regulation of relief valve, extension relief valve's life.

Referring to fig. 1, fig. 2 and fig. 3, the shielding mechanism comprises a shielding cylinder 1, a top plate 2, a fixed ring 4, two clamping holes 10, two connecting columns 11 and two clamping blocks 12, wherein the inner wall of the fixed ring 4 is fixedly connected with the outer side of a valve body 5, the two clamping holes 10 are all arranged on the same fixed ring 4, the shielding cylinder 1 is arranged on the fixed ring 4, the bottom of the top plate 2 is fixedly connected with the top of the shielding cylinder 1, an observation window for observing a valve rod is formed in the top plate 2, an acrylic plate is arranged on the inner wall of the observation window, two sides of the bottom of the shielding cylinder 1 are fixedly connected with one ends of the two connecting columns 11 respectively, the other ends of the two connecting columns 11 are rotatably connected with the tops of the two clamping blocks 12 through bearings respectively, and the two clamping blocks 12 are mutually engaged with the two clamping holes 10 respectively.

Above-mentioned technical scheme through covering the mechanism, can cover the junction between valve rod and the valve body 5 to and the screw thread on the valve rod, prevent that it from rust, and then guarantee the valve rod to the normal regulation of relief valve, extension relief valve's life.

The application can be used in the field of Roots blower pressure relief valves, and can also be used in other fields suitable for the application.

Examples

Referring to fig. 1-4, an improvement is made on the basis of the first embodiment, and the Roots blower relief valve is applied in the field of Roots blower relief valves:

Referring to fig. 1 to 2, two holding grooves 3 for holding and opening the shielding cylinder 1 are formed on the outer side of the shielding cylinder 1.

Above-mentioned technical scheme is through setting up on shielding section of thick bamboo 1 and holding groove 3 for when needs dismantle shielding section of thick bamboo 1, conveniently hold it, and then be convenient for open shielding section of thick bamboo 1.

Referring to fig. 1 and 3, a hexagonal ring 6 for facilitating disassembly and maintenance or replacement of the valve body 5 is fixedly connected to the outer side of the valve body 5.

Above-mentioned technical scheme is through setting up hexagonal ring 6 on valve body 5 for when need dismantle the relief valve, can be fit through spanner and hexagonal ring 6, be convenient for dismantle the maintenance or change to the relief valve.

Referring to fig. 1 and 3, a sealing ring 7 for sealing a joint of the valve body 5 and a pipe or a device is fixedly connected to the bottom of the valve body 5, the sealing ring 7 is located at the outer side of the connecting ring 8, and the size of the sealing ring 7 is larger than that of the connecting ring 8.

Above-mentioned technical scheme sets up sealing washer 7 through the junction at go-between 8 and pipeline or equipment for after installing the relief valve, can seal the junction spare, prevent that the relief valve from leaking, guarantee equipment normal operating.

Referring to fig. 1 and 3, the bottom of the attachment ring 8 is configured as a curved edge that facilitates interconnection of the attachment ring 8 to a pipe or equipment connection.

Above-mentioned technical scheme is through the arc limit that sets up in the bottom of go-between 8, is convenient for insert the junction of pipeline or equipment with go-between 8 bottoms, and then conveniently is connected go-between 8 and pipeline or equipment, guarantees that the relief valve installs.

The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.

Claims

1. The utility model provides a Roots blower relief valve which is characterized in that, including valve body (5) and go-between (8), the top of valve body (5) is provided with the valve rod that is used for adjusting the relief valve, valve body (5) are hollow structure, the bottom of valve body (5) is fixed connection with the top of go-between (8), thread groove (9) convenient to interconnect relief valve and pipeline or equipment have been seted up in the outside of go-between (8);

the shielding mechanism is arranged on the outer side of the valve body (5) and used for shielding the joint of the valve rod and the valve body (5).

2. The Roots blower pressure release valve according to claim 1, characterized in that the shielding mechanism comprises a shielding cylinder (1), a top plate (2), a fixed ring (4), two clamping holes (10), two connecting columns (11) and two clamping blocks (12), wherein the inner wall of the fixed ring (4) is fixedly connected with the outer side of the valve body (5), the two clamping holes (10) are all arranged on the same fixed ring (4), the shielding cylinder (1) is arranged on the fixed ring (4), the bottom of the top plate (2) is fixedly connected with the top of the shielding cylinder (1), an observation window for observing a valve rod is formed in the top plate (2), an acrylic plate is arranged on the inner wall of the observation window, the two sides of the bottom of the shielding cylinder (1) are respectively fixedly connected with one ends of the two connecting columns (11), the other ends of the two connecting columns (11) are respectively connected with the tops of the two clamping blocks (12) through bearings in a rotating mode, and the two clamping blocks (12) are respectively engaged with the two clamping holes (10).

3. The Roots blower pressure release valve according to claim 2, wherein two holding grooves (3) which are convenient for holding and opening the shielding cylinder (1) are formed in the outer side of the shielding cylinder (1).

4. The Roots blower pressure release valve according to claim 1, wherein the outer side of the valve body (5) is fixedly connected with a hexagonal ring (6) which is convenient for disassembly, overhaul or replacement of the valve body (5).

5. The Roots blower pressure release valve according to claim 1, wherein a sealing ring (7) for sealing the joint of the valve body (5) and a pipeline or equipment is fixedly connected to the bottom of the valve body (5), the sealing ring (7) is located on the outer side of the connecting ring (8), and the size of the sealing ring (7) is larger than that of the connecting ring (8).

6. A Roots blower pressure relief valve according to claim 1, wherein the bottom of the connecting ring (8) is provided as a curved edge facilitating interconnection of the connecting ring (8) with a pipe or equipment connection.