Anti-backflow liquid storage device

Abstract

The utility model relates to an anti-backflow liquid storage device which comprises a shell, a liquid inlet pipe is connected to the upper end of the shell, a fixing block is arranged on the liquid inlet pipe on the inner wall of the shell, a sealing baffle is hinged to the fixing block through a pin shaft, the sealing baffle is attached to the inner wall of the shell corresponding to the liquid inlet pipe, a filter screen cover is installed at the bottom in the shell, and drying agent particles are filled in the filter screen cover. A liquid outlet pipe is arranged in the middle of the interior of the shell, the bottom of the liquid outlet pipe penetrates into the drying agent particles in the filter screen cover, the top of the liquid outlet pipe penetrates out of the top of the shell to be connected with an external expansion valve, a drain outlet is formed in the lower end of the side wall of the shell, and a drain valve is arranged on the drain outlet. A built-in interception net cylinder is arranged in the middle of the bottom in the filter screen cover, and the bottom of the liquid outlet pipe penetrates into the built-in interception net cylinder. According to the liquid storage device, the liquid inlet pipe can be plugged through the sealing baffle, reverse flow is avoided, the sealing baffle can be opened under the impact of liquid during normal liquid inlet, the sealing baffle can be plugged under the action of gravity when liquid inlet is not needed, and normal operation of the liquid storage device is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air conditioner liquid accumulator, especially to a backflow prevention liquid accumulator. BACKGROUND

[0002] The liquid accumulator is an important component of the compressor, which plays the role of storage, gas-liquid separation, filtration, sound attenuation and refrigerant buffering. The liquid accumulator is a commonly used auxiliary component of the refrigeration air conditioning system. Generally, the refrigerant enters the evaporator through the liquid accumulator after the throttling device.

[0003] The refrigerant in the liquid accumulator may backflow after entering, which affects the normal work, and therefore needs to be controlled. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the insufficient of prior art, and provides a backflow prevention liquid accumulator.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A backflow prevention liquid accumulator, comprising a shell, a liquid inlet pipe connected to the upper end of the shell, a fixed block provided on the inner wall of the shell above the liquid inlet pipe, a sealing baffle hinged to the fixed block through a pin shaft, the sealing baffle being attached to the inner wall of the shell corresponding to the liquid inlet pipe, a filter screen cover installed at the bottom of the shell, dry agent particles filled in the filter screen cover, a liquid outlet pipe provided at the middle position of the shell, the bottom of the liquid outlet pipe penetrating into the dry agent particles inside the filter screen cover and the top of the liquid outlet pipe penetrating out of the top of the shell and being connected to an external expansion valve, a blowdown port provided at the lower end of the side wall of the shell, and a blowdown valve provided on the blowdown port.

[0007] An internal trapping screen cylinder is provided at the middle position of the inner bottom of the filter screen cover, and the bottom of the liquid outlet pipe penetrates into the internal trapping screen cylinder.

[0008] The utility model has the advantages that the sealing baffle can be used to block the liquid inlet pipe to avoid backflow. When the liquid enters normally, the sealing baffle can be opened under the impact of the liquid. When the liquid does not need to enter, the sealing baffle can be blocked under the action of gravity, which ensures the normal operation of the liquid accumulator. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 The figure is a structural schematic view of the utility model;

[0010] In the figure: 1 - shell; 2 - liquid inlet pipe; 3 - fixed block; 4 - pin shaft; 5 - sealing baffle; 6 - filter screen cover; 7 - dry agent particles; 8 - liquid outlet pipe; 9 - blowdown port; 10 - blowdown valve; 11 - trapping screen cylinder; 12 - circular truncated cone-shaped protrusion; 13 - detachable top cover; 14 - observation cylinder; 15 - observation window; 16 - pressure sensor;

[0011] The utility model will be described below in conjunction with the embodiments of the utility model and with reference to the drawings. DETAILED DESCRIPTION

[0012] The principles and features of the utility model will be described below in conjunction with the drawings and the embodiments, which are only used to explain the utility model and not to limit the scope of the utility model. The utility model will be described in more detail in the following paragraphs with reference to the drawings by way of example. The advantages and features of the utility model will be more apparent according to the following description. It should be noted that the drawings are in a very simplified form and all use non-precise proportions, which are only used to facilitate and clarify the purpose of assisting the description of the embodiments of the utility model.

[0013] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be intervening components. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be intervening components. When a component is referred to as being "disposed" on another component, it can be directly on the other component or there can be intervening components. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0015] The utility model will be further described below in conjunction with the drawings and the embodiments:

[0016] As Figure 1 shown, an anti-reflux liquid accumulator includes a shell 1, a liquid inlet pipe 2, a fixed block 3, a pin shaft 4, a blocking plate 5, a filter screen cover 6, desiccant particles 7, a liquid outlet pipe 8, a sewage outlet 9, a sewage valve 10, a trapping screen cylinder 11, a circular truncated cone-shaped protrusion 12, a detachable top cover 13, an observation cylinder 14, an observation window 15 and a pressure sensor 16.

[0017] The shell 1 is connected with the liquid inlet pipe 2 at the upper end, and the inner wall of the shell 1 is provided with a fixed block 3 above the liquid inlet pipe 2; the fixed block 3 is hingedly connected with a sealing baffle 5 through a pin shaft 4, and the sealing baffle 5 is attached to the corresponding inner wall of the shell 1 above the liquid inlet pipe 2.

[0018] The inner bottom of the filter cover 6 is provided with an inner built-in interception net cylinder 11, and the bottom of the liquid outlet pipe 8 penetrates into the inner built-in interception net cylinder 11.

[0019] The inner bottom of the shell 1 is provided with a circular truncated cone-shaped protrusion 12, the top of the circular truncated cone-shaped protrusion 12 is provided with a groove, and the filter cover 6 is installed in the groove, thereby ensuring the stability of the installation of the filter cover 6.

[0020] The top of the filter cover 6 is in a circular truncated cone-shaped structure, which facilitates the sliding of impurities under the action of gravity and avoids the accumulation of impurities on the top of the filter cover 6.

[0021] The top of the shell 1 is provided with a detachable top cover 13, and the liquid outlet pipe 8 penetrates out of the detachable top cover 13.

[0022] The detachable top cover 13 is provided with an observation cylinder 14 at the top, and the observation cylinder 14 is provided with an observation window 15.

[0023] The liquid inlet pipe 2 is provided with a pressure sensor 16.

[0024] The sealing baffle 5 can form a seal on the liquid inlet pipe 2, thereby avoiding backflow; when the liquid inlet pipe 2 is normally filled with liquid, the sealing baffle 5 can be opened under the impact of the liquid; and when the liquid inlet pipe 2 is not filled with liquid, the sealing baffle 5 can form a seal under the action of gravity, thereby ensuring the normal operation of the liquid storage device.

[0025] The above is an exemplary description of the present application in combination with the drawings, and it is obvious that the specific implementation of the present application is not limited by the above method. Any improvement or direct application in other fields using the method concept and technical solution of the present application is within the protection scope of the present application.

Claims

1. An anti-reflux reservoir, characterized by, The utility model relates to a liquid filter, including shell (1), the upper end of shell (1) is connected with liquid inlet pipe (2), and the inner wall of shell (1) is equipped with fixed block (3) on liquid inlet pipe (2), and fixed block (3) is hinged with blocking baffle (5) through pin shaft (4), and blocking baffle (5) is attached on the inner wall of shell (1) corresponding to liquid inlet pipe (2), and the bottom of shell (1) is installed with filter screen cover (6), and filter screen cover (6) is filled with dry agent granule (7), and the middle position of shell (1) is equipped with liquid outlet pipe (8), and the bottom of liquid outlet pipe (8) is passed into the inside of dry agent granule (7) inside filter screen cover (6) and the top is passed out shell (1) top and is connected with outside expansion valve, and the lower end of the lateral wall of shell (1) is equipped with blow-off port (9), and blow-off port (9) is equipped with blow-off valve (10).

2. A reverse flow prevention reservoir according to claim 1, wherein The bottom of filter screen cover (6) is equipped with built-in interception net cylinder (11) in the middle position, and the bottom of liquid outlet pipe (8) is passed into the inside of built-in interception net cylinder (11).

3. A reverse flow prevention reservoir according to claim 2, wherein The bottom of shell (1) is equipped with circular truncated cone convex (12), and the top of circular truncated cone convex (12) is equipped with recess, and filter screen cover (6) is installed in recess.

4. A reverse flow prevention reservoir according to claim 3, wherein The top of filter screen cover (6) is circular truncated cone structure.

5. A reverse flow prevention reservoir according to claim 4, wherein The top of shell (1) is equipped with detachable top cover (13), and liquid outlet pipe (8) is passed out from detachable top cover (13).

6. A reverse flow prevention reservoir according to claim 5, wherein The top of detachable top cover (13) is equipped with observation cylinder (14), and observation cylinder (14) is equipped with observation window (15).

7. A reverse flow prevention reservoir according to claim 5, wherein Pressure sensor (16) is installed on liquid inlet pipe (2).

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