CN110292804B - Equipment integrating check valve, filter and expansion tank - Google Patents

Abstract

The invention provides equipment integrating a check valve, a filter and an expansion tank, which comprises a support for supporting a closed tank body and the closed tank body; the lower half part of the closed tank body is provided with a liquid outlet end and a liquid inlet end; a filter element and a check valve assembly are arranged in the closed tank body, and the filter element separates a liquid inlet end from a liquid outlet end; the check valve assembly and the liquid inlet end are positioned on the same side of the filter element, which is separated from each other, the check valve assembly comprises a check valve sliding block, a check valve fixing end and a hinge, the check valve fixing end is arranged at the tail end of the liquid inlet end, and the check valve sliding block is horizontally and correspondingly arranged with the check valve fixing end through the hinge; the outside of the upper half part of the closed tank body is provided with an exhaust port, the exhaust port and the liquid outlet end are positioned on the same side of the filtering separation, and the outside of the exhaust port is connected with an automatic exhaust valve. The check valve and the filter element are arranged in the closed tank body, so that the overflow area of the liquid flow channel is ensured, and the resistance loss in the liquid flowing process is reduced.

Description

A device integrating a check valve, a filter and an expansion tank

Technical Field

The present invention belongs to the field of mechanical equipment and the technical field of manufacturing energy-saving transformation, and specifically relates to a device integrating a check valve, a filter and an expansion tank.

Background technique

In a system that uses a pump for circulation, in order to prevent the liquid from flowing back when the pump is not in use, a check valve is generally installed at the front or rear end of the pump; in order to prevent solid particles contained in the liquid from entering the pump and downstream system, a Y-type filter is installed at the pump inlet, but due to space limitations, the check valves and Y-type filters currently on the market generally have large resistance losses when used, which increases the power consumption of the circulating pump. In addition, for a closed circulation system, the volume of the circulating liquid will increase or decrease with the change of temperature, and the gas mixed in the circulating liquid will continue to overflow. If it is not discharged in time, the system operation noise will increase at the least, and the pump may not be able to pump out the liquid at the worst, and the circulation system will fail. At present, most of the bladder expansion tanks are used to solve the problem of liquid expansion, and automatic exhaust valves are used to remove the gas in the system. The installation is troublesome, the cost is high, and the exhaust effect is not ideal.

Summary of the invention

In order to provide a convenient and simple device and make up for the defects of the prior art, the present invention provides a device integrating a check valve, a filter and an expansion tank. The present invention has the characteristics of easy installation, good pressure stabilization and exhaust effect, normal operation of check valve, filtration and other functions, and greatly reduced resistance loss compared with traditional check valves and Y-type filters, and greatly reduced investment cost.

In order to achieve the above object, the technical solution of the present invention is as follows:

A device integrating a check valve, a filter and an expansion tank, comprising a support supporting a closed tank body and a closed tank body, wherein the lower half of the closed tank body is provided with a liquid outlet and a liquid inlet, a horizontal cylindrical tank body is extended from the cylindrical tank body part symmetrical to the liquid outlet, the liquid inlet is arranged on the horizontal cylindrical tank body, and a lower inspection port flange is arranged between the liquid inlet and the horizontal cylindrical tank body;

A filter element and a check valve assembly are provided inside the sealed tank body, wherein the filter element separates a liquid inlet end and a liquid outlet end; the check valve assembly and the liquid inlet end are located on the same side where the filter element separates them, and the check valve assembly comprises a check valve slider, a check valve fixed end and a hinge, wherein the check valve fixed end is arranged at the end of the liquid inlet end, and the check valve slider is arranged horizontally corresponding to the check valve fixed end through a hinge fixed to the inner wall of the tank body;

An exhaust port is arranged on the outer side of the upper half of the cylindrical tank body, the exhaust port and the liquid outlet end are located on the same side separated by the filter, and an automatic exhaust valve is connected to the outer side of the exhaust port.

Furthermore, the cross-section of the bracket is a trapezoidal shape with a groove, and the closed tank body is shaped like a cylindrical tank body part with hemispherical tank body parts combined at both ends, and the bottom hemispherical tank body part is arranged in the groove of the support; an upper inspection port flange is provided between the top hemispherical tank body part and the cylindrical tank body part to facilitate the inspection and replacement of the filter element.

Furthermore, the bottom hemispherical tank body is provided with a drain valve, and the drain valve and the check valve assembly are located on the same side separated from the filter element.

Furthermore, the automatic exhaust valve is connected to a manual exhaust valve so that the gas can be discharged in time during debugging.

Furthermore, the liquid inlet end and the liquid outlet end are located on the same horizontal line and have opening diameters of the same size.

Beneficial effects: The present invention installs the check valve and the filter element in a closed tank body, ensuring the flow area of the liquid flow channel and reducing the resistance loss during the liquid flow process. After engineering application, it achieves the characteristics of easy installation, good pressure stabilization and exhaust effect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the present invention.

In the figure, 1-liquid inlet end, 2-liquid outlet end, 3-check valve slider, 4-check valve fixed end, 5-filter element, 6-hinge, 7-manual exhaust valve, 8-automatic exhaust valve, 9-drain valve, 10-support, 11-upper inspection port flange, 12-sealed tank body, 13-lower inspection port flange.

Detailed ways

The present invention is described below with reference to specific examples. It will be appreciated by those skilled in the art that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention in any way.

A device integrating a check valve, a filter and an expansion tank, as shown in FIG1, comprises a support 10 supporting a closed tank body 12 and the closed tank body 12, the cross section of the support 10 is a trapezoidal shape with a groove, the closed tank body 12 is in the shape of a cylindrical tank body part with hemispherical tank body parts at both ends, and the bottom hemispherical tank body part is arranged in the groove of the support 10; an upper inspection flange 11 is arranged between the top hemispherical tank body part and the cylindrical tank body part; the lower half of the cylindrical tank body part of the closed tank body 12 is provided with a liquid outlet end 2 and a liquid inlet end 1, a horizontal cylindrical tank body is extended from the cylindrical tank body part symmetrical to the liquid outlet end 2, the liquid inlet end 1 is arranged on the horizontal cylindrical tank body, and a lower inspection flange 13 is arranged between the liquid inlet end 1 and the horizontal cylindrical tank body;

A filter element 5 and a check valve assembly are provided inside the closed tank body 12. The filter element 5 separates the liquid inlet end 1 and the liquid outlet end 2. The check valve assembly and the liquid inlet end 1 are located on the same side separated by the filter element 5. The check valve assembly includes a check valve slider 3, a check valve fixed end 4 and a hinge 6. The check valve fixed end 4 is provided at the end of the liquid inlet end 1. The check valve slider 3 is provided horizontally corresponding to the check valve fixed end 4 through the hinge 6 fixed to the inner wall of the tank body.

The bottom hemispherical tank body is provided with a drain valve 9, and the drain valve 9 and the check valve assembly are located on the same side separated from the filter element 5;

An exhaust port is provided on the outer side of the upper half of the cylindrical tank body part. The exhaust port and the liquid outlet end 2 are located on the same side separated by the filter element 5, and a distance is provided to the top of the top hemispherical tank body part to prevent the gas in the tank from losing its expansion and pressure stabilizing effect after being exhausted. An automatic exhaust valve 8 is connected to the outer side of the exhaust port, and the automatic exhaust valve 8 is connected to a manual exhaust valve 7. The manual exhaust valve is used to exhaust the gas in time during debugging so that the circulation of the pump can be established as soon as possible.

In a specific embodiment, the liquid inlet port 1 and the liquid outlet port 2 are located on the same horizontal line and have opening diameters of the same size.

The workflow of the present invention is:

(1) When the liquid is running in the forward direction, it enters from the liquid inlet end 1, and the liquid pushes the check valve slider 3, which rotates around the hinge 6. The check valve slider 3 and the check valve fixed end 4 are separated, and the liquid flows out from the liquid outlet end 2 after being filtered by the filter element 5, and then enters the next device, that is, the inlet of the circulation pump; when the liquid is running in the reverse direction, it enters from the liquid outlet end 2, and the check valve slider 3 rotates along the hinge 6 under the thrust of the liquid, and closes with the check valve fixed end 4, completing the check function;

(2) During normal operation, the manual exhaust valve 7 is closed and the automatic exhaust valve 8 is opened to control the volume of the gas in the closed tank body to prevent the system pressure from changing too much when the temperature in the system changes, affecting the safety of the system; when the gas mixed in the liquid is released in the closed tank body 12 and flows to the upper part of the closed tank body 12, the manual exhaust valve 7 is opened to release the excess gas, and the valve is closed when the manual exhaust valve 7 discharges liquid; this equipment should be installed at the inlet of the circulation pump as much as possible, so that the exhaust effect is best;

(3) The closed tank body 12 is provided with an upper inspection flange 11 to facilitate inspection and replacement of the filter element 5; the closed tank body 12 is provided with a lower inspection flange 13 to facilitate inspection and replacement of the check valve assembly; the closed tank body 12 is provided with a drain valve 9 to discharge the solid particles accumulated in the closed tank body 12 out of the closed tank body.

Claims (1)

1. A device integrating a check valve, a filter and an expansion tank, characterized in that: it comprises a support for supporting a closed tank body and a closed tank body, the cross section of the support is a trapezoidal shape with a groove, the closed tank body is in the shape of a cylindrical tank body part with hemispherical tank body parts combined at both ends, and the bottom hemispherical tank body part is arranged in the groove of the support; an upper inspection flange is arranged between the top hemispherical tank body part and the cylindrical tank body part; the lower half of the cylindrical tank body part of the closed tank body is provided with a liquid outlet and a liquid inlet, a horizontal cylindrical tank body is extended from the cylindrical tank body part symmetrical to the liquid outlet, the liquid inlet end is arranged on the horizontal cylindrical tank body, and a lower inspection flange is arranged between the horizontal cylindrical tank body and the horizontal cylindrical tank body; A filter element and a check valve assembly are provided inside the sealed tank body, wherein the filter element separates the liquid inlet end and the liquid outlet end; the check valve assembly and the liquid inlet end are located on the same side where the filter element separates them, and the check valve assembly comprises a check valve slider, a check valve fixed end and a hinge, wherein the check valve fixed end is arranged at the end of the liquid inlet end, and the check valve slider is arranged horizontally corresponding to the check valve fixed end through a hinge fixed to the inner wall of the tank body; An exhaust port is provided on the outer side of the upper half of the cylindrical tank body, the exhaust port and the liquid outlet end are located on the same side of the filter partition, and an automatic exhaust valve is connected to the outer side of the exhaust port; The bottom hemispherical tank body is provided with a drain valve, and the drain valve and the check valve assembly are located on the same side separated from the filter element; The automatic exhaust valve is connected to a manual exhaust valve so that the gas can be discharged in time during debugging; The liquid inlet end and the liquid outlet end are located on the same horizontal line and have opening diameters of the same size.