Exhaust valve pressure reducing device for pump

Abstract

The utility model discloses an exhaust valve pressure reducing device for a pump, which comprises an exhaust valve body, a floating ball is arranged on one side in the exhaust valve body, a pressure reducing assembly is arranged at one end of the exhaust valve body, and the pressure reducing assembly comprises a first pressure reducing plate, a second pressure reducing plate and a first flange. The first pressure reducing plate and the second pressure reducing plate are installed on the two sides of the first flange respectively. The exhaust valve has the advantages that the pressure reducing assembly composed of the first pressure reducing plate, the second pressure reducing plate and the first flange is installed between the exhaust valve body and the connecting pipeline, and the first pressure reducing plate and the second pressure reducing plate can be compressed under the action of the first vent hole in the first pressure reducing plate and the second vent hole in the second pressure reducing plate; air flow and water flow generated when the circulating water pump is started are effectively blocked, the pressure of an inlet of the exhaust valve body is reduced, the impact effect of the floating ball on the exhaust valve body is reduced, and the defects of leakage damage and frequent overhaul of the exhaust valve body are overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump exhaust valve pressure reducing technical field, concretely relates to a pump exhaust valve pressure reducing device. BACKGROUND

[0002] The pump exhaust valve (also known as pump exhaust device or air discharge valve) is a safety device installed in the pump system, mainly used for removing air in the pump body or pipeline to prevent air accumulation from affecting the normal operation of the pump. It can effectively remove air during pump start-up, system operation and shutdown, ensuring efficient and stable operation of the pump system.

[0003] At present, when the circulating water pump starts, the water level rises rapidly, causing the gas in the pump to be compressed sharply, the air pressure and water pressure to rise rapidly, and the suddenly rising gas and gas-liquid two-phase flow to repeatedly impact the valve body with the floating ball, causing damage to the floating ball, water leakage of the exhaust valve and frequent maintenance on site. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem in the prior art by providing a pump exhaust valve pressure reducing device that can effectively block airflow and water flow by changing the flow area, reduce the pressure at the inlet of the exhaust valve body and reduce the impact of the floating ball on the exhaust valve body.

[0005] The utility model discloses a pump exhaust valve pressure reducing device, which comprises an exhaust valve body, a floating ball is installed on one side of the exhaust valve body, a pressure reducing assembly is installed at one end of the exhaust valve body, the pressure reducing assembly comprises a first pressure reducing plate, a second pressure reducing plate and a flange one, the first pressure reducing plate and the second pressure reducing plate are installed on both sides of the flange one respectively, a first groove is formed in the flange one at the matching part of the first pressure reducing plate, a second groove is formed in the flange one at the matching part of the second pressure reducing plate, a first air hole is reserved in the middle of the first pressure reducing plate, a second air hole is reserved in the middle of the second pressure reducing plate, a connecting pipeline is further arranged on the side of the pressure reducing assembly away from the exhaust valve body, and the connecting pipeline comprises a flange two and a steel pipe.

[0006] Further, the flange two is located outside the end of the steel pipe, and the flange two is in contact with the flange one.

[0007] By adopting the above technical scheme, the steel pipe is mainly used for connecting with the external pipeline, and the flange two is mainly used for connecting the steel pipe with the pressure reducing assembly.

[0008] Further, a flange three is further installed on the exhaust valve body at the pressure reducing assembly, and the flange one, the flange two and the flange three are of the same size.

[0009] By adopting the technical scheme, the flange three is mainly used for connecting the exhaust valve body and the pressure reducing assembly, the flange one, the flange two and the flange three are of the same size, and the convenient penetration of external bolts can be ensured.

[0010] Further, the flange one, the flange two and the flange three are fixedly connected through external bolts.

[0011] By adopting the technical scheme, the flange one, the flange two and the flange three can be connected and fixed under the action of external bolts, so that the reliable connection of the pressure reducing assembly between the connecting pipeline and the exhaust valve body can be ensured.

[0012] Further, the size of the first recess is greater than that of the first pressure reducing plate, and the size of the second recess is greater than that of the second pressure reducing plate.

[0013] By adopting the technical scheme, the size of the first recess is greater than that of the first pressure reducing plate, so that the convenient installation of the first pressure reducing plate on the flange two can be ensured, and the size of the second recess is greater than that of the second pressure reducing plate, so that the reliable installation of the second pressure reducing plate on the flange two can be realized.

[0014] Further, the first pressure reducing plate is inserted into the first recess, and the second pressure reducing plate is inserted into the second recess.

[0015] By adopting the technical scheme, the first pressure reducing plate and the second pressure reducing plate can be quickly installed and fixed in the form of insertion and fixation.

[0016] Further, the first recess and the second recess are of the same size, and the first recess and the second recess are both circular ring structures.

[0017] By adopting the technical scheme, the first recess and the second recess in the circular ring structure can be perfectly matched with the first pressure reducing plate and the second pressure reducing plate.

[0018] Further, the aperture of the first air hole is greater than that of the second air hole.

[0019] By adopting the technical scheme, the aperture of the first air hole is greater than that of the second air hole, so that when the gas and the water flow pass through the first air hole and the second air hole after the circulating water pump is started, the gas and the water flow can be effectively blocked, thereby reducing the impact of the floating ball on the exhaust valve body.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] In order to solve the problem that the water level rises rapidly when the circulating water pump starts, the gas in the pump is compressed sharply, the air pressure and water pressure rise rapidly, the gas and gas-liquid two-phase flow driven by the floating ball repeatedly hit the valve body, causing the floating ball damage, the exhaust valve leaks, and the frequent maintenance on site, the utility model discloses a reducing assembly which is composed of a first reducing plate, a second reducing plate and a flange two is installed between the exhaust valve body and the connecting pipeline, can effectively block the gas flow and water flow when the circulating water pump starts under the action of the first air hole on the first reducing plate and the second air hole on the second reducing plate, reduce the pressure of the exhaust valve body inlet, reduce the impact of the floating ball on the exhaust valve body, avoid the leakage damage and frequent maintenance of the exhaust valve body. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the main sectional view of the exhaust valve pressure reducing device for pump of the utility model;

[0023] Figure 2 It is the main sectional view of the flange one in the exhaust valve pressure reducing device for pump of the utility model;

[0024] Figure 3 It is the main sectional view of the reducing assembly in the exhaust valve pressure reducing device for pump of the utility model;

[0025] Figure 4 It is the side view of the first reducing plate in the exhaust valve pressure reducing device for pump of the utility model;

[0026] Figure 5 It is the side view of the second reducing plate in the exhaust valve pressure reducing device for pump of the utility model.

[0027] The signs are explained as follows:

[0028] 1, exhaust valve body; 2, reducing assembly; 201, first reducing plate; 2011, first air hole; 202, flange one; 2021, first recess; 2022, second recess; 203, second reducing plate; 2031, second air hole; 3, connecting pipeline; 4, flange three; 5, floating ball. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0030] As Figures 1-5As shown, a pressure reducing device for a pump exhaust valve in this embodiment includes an exhaust valve body 1. A float 5 is installed on one side of the exhaust valve body 1. A pressure reducing assembly 2 is installed at one end of the exhaust valve body 1. The pressure reducing assembly 2 includes a first pressure reducing plate 201, a second pressure reducing plate 203, and a flange 202. The first pressure reducing plate 201 and the second pressure reducing plate 203 are respectively installed on both sides of the flange 202. A first groove 2021 is provided on the flange 202 at the part that mates with the first pressure reducing plate 201, and a second groove 2022 is provided on the flange 202 at the part that mates with the second pressure reducing plate 203. A first vent hole 2011 is reserved in the middle of the first pressure reducing plate 201, and a second vent hole 2031 is reserved in the middle of the second pressure reducing plate 203. The diameter of the first vent 2011 is larger than that of the second vent 2031. This ensures that after the circulating water pump starts, the gas and water flow can be effectively blocked when passing through the first vent 2011 and the second vent 2031, thereby reducing the impact of the float 5 on the exhaust valve body 1. The pressure reducing assembly 2 is also provided with a connecting pipe 3 on the side opposite to the exhaust valve body 1. The connecting pipe 3 includes flange 2 301 and steel pipe 302. Under the action of external bolts, flange 1 202, flange 2 301 and flange 3 4 can be connected and fixed, thereby ensuring the reliable connection between the pressure reducing assembly 2 and the exhaust valve body 1 via the connecting pipe 3.

[0031] like Figures 1-5 As shown, in this embodiment, flange 2 301 is located on the outer side of the end of steel pipe 302. Flange 2 301 is in contact with flange 1 202. Steel pipe 302 is mainly used to connect with external pipelines. Flange 2 301 is mainly used to connect steel pipe 302 with pressure reducing assembly 2. Flange 3 4 is also installed on the exhaust valve body 1 at pressure reducing assembly 2. Flange 1 202, flange 2 301 and flange 3 4 are the same size. Flange 3 4 is mainly used to connect exhaust valve body 1 with pressure reducing assembly 2. Making flange 1 202, flange 2 301 and flange 3 4 the same size can ensure the convenient passage of external bolts. Flange 1 202, flange 2 301 and flange 3 4 are fixedly connected by external bolts.

[0032] like Figures 1-5As shown, in the embodiment, the size of the first recess 2021 is greater than that of the first pressure relief plate 201, and the size of the second recess 2022 is greater than that of the second pressure relief plate 203. The size of the first recess 2021 greater than that of the first pressure relief plate 201 can ensure convenient installation of the first pressure relief plate 201 on the flange two 301, and the size of the second recess 2022 greater than that of the second pressure relief plate 203 can realize reliable installation of the second pressure relief plate 203 on the flange two 301. The first pressure relief plate 201 is inserted into the first recess 2021, and the second pressure relief plate 203 is inserted into the second recess 2022. The insertion and fixed mode can realize quick installation and fixation of the first pressure relief plate 201 and the second pressure relief plate 203. The first recess 2021 and the second recess 2022 are of the same size, and both the first recess 2021 and the second recess 2022 are of a circular ring structure. The circular ring structure of the first recess 2021 and the second recess 2022 can be perfectly matched with the first pressure relief plate 201 and the second pressure relief plate 203.

[0033] The specific implementation process of the embodiment is as follows: when in use, first, the pressure relief assembly 2 is installed between the exhaust valve body 1 and the connecting pipeline 3, and then the exhaust valve pressure relief device can be put into use. In the use process, when the circulating water pump is started, the gas and fluid in the pump body are effectively blocked under the action of the first vent hole 2011 on the first pressure relief plate 201 and the second vent hole 2031 on the second pressure relief plate 203. Not only the pressure at the inlet of the exhaust valve body 1 is reduced, and the impact of the floating ball 5 on the exhaust valve body 1 is reduced, but also the leakage damage and frequent maintenance of the exhaust valve body 1 are avoided.

[0034] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application should not be limited to the embodiments shown herein, but should be consistent with the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pump exhaust valve pressure reducing device characterized by: The exhaust valve valve body (1) is provided with a float ball (5) on one side, and a pressure reducing assembly (2) is installed at one end of the exhaust valve valve body (1), the pressure reducing assembly (2) comprises a first pressure reducing plate (201), a second pressure reducing plate (203) and a flange (202), the first pressure reducing plate (201) and the second pressure reducing plate (203) are installed on both sides of the flange (202) respectively, a first groove (2021) is formed on the flange (202) at the position matched with the first pressure reducing plate (201), a second groove (2022) is formed on the flange (202) at the position matched with the second pressure reducing plate (203), a first air hole (2011) is reserved in the middle of the first pressure reducing plate (201), a second air hole (2031) is reserved in the middle of the second pressure reducing plate (203), and a connecting pipeline (3) is further arranged on the side of the pressure reducing assembly (2) away from the exhaust valve valve body (1), the connecting pipeline (3) comprises a flange (301) and a steel pipe (302).

2. A pump exhaust valve pressure reducing device according to claim 1, characterized by: The flange (301) is located outside the end of the steel pipe (302), and the flange (301) is in contact with the flange (202).

3. A pump exhaust valve pressure reducing device according to claim 1, characterized by: A flange (4) is further installed on the exhaust valve valve body (1) at the position of the pressure reducing assembly (2), and the flange (202), the flange (301) and the flange (4) have the same size.

4. A pump exhaust valve pressure reducing device according to claim 3, characterized in that: The flange (202), the flange (301) and the flange (4) are connected by external bolts.

5. The pump exhaust valve pressure reduction device of claim 1, wherein: The size of the first groove (2021) is larger than that of the first pressure reducing plate (201), and the size of the second groove (2022) is larger than that of the second pressure reducing plate (203).

6. A pump exhaust valve pressure reducing device according to claim 5, wherein: The first pressure reducing plate (201) is inserted into the first groove (2021), and the second pressure reducing plate (203) is inserted into the second groove (2022).

7. A pump exhaust valve pressure reducing device according to claim 6, characterized in that: The first groove (2021) and the second groove (2022) have the same size, and both the first groove (2021) and the second groove (2022) have a circular ring structure.

8. A pump exhaust valve pressure reducing device according to claim 1, wherein: The aperture of the first air hole (2011) is larger than that of the second air hole (2031).

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