Liquid blocking device of reciprocating compressor

Abstract

The utility model discloses a liquid blocking device of a reciprocating compressor. A plurality of buffer tank bodies are arranged between all stages of compressor bodies correspondingly. The plurality of liquid accumulation bins are arranged between the outlet and the inlet of the corresponding buffer tank body, and the plurality of liquid accumulation bins are communicated with the tank body between the outlet and the inlet of the corresponding buffer tank body; the plurality of liquid level meters are fixedly arranged on one side of the corresponding liquid accumulation bin; the plurality of liquid discharge valve groups are fixedly arranged at the liquid outlets of the corresponding liquid accumulation bins and are electrically connected with the corresponding liquid level meters; the multiple liquid blocking assemblies are fixedly arranged between the liquid inlets of the corresponding liquid accumulation bins and the outlet of the buffer tank body. The liquid discharging valve set is automatically opened according to the received signal, liquid in the liquid accumulation bin is discharged, the liquid is prevented from flowing into the compressor of the next stage, and therefore the service life of the compressor is prolonged. The liquid blocking assembly can block or reduce liquid in the medium gas from flowing to the inlet of the next-stage compressor, and the pressurization effect of the compressors on the medium gas is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressors, in particular to a reciprocating compressor liquid blocking device. BACKGROUND

[0002] The reciprocating compressor, as a typical volumetric compressor, its core working principle lies in the regular reciprocating movement of the piston or diaphragm inside the cylinder, which periodically changes the cylinder volume, thereby realizing effective pressurization and efficient delivery of the medium gas.

[0003] In the daily operation of the reciprocating compressor, it is essential to ensure that it can maintain efficient and stable performance, and one of the key maintenance measures is to minimize the liquid components carried by the operating medium into the cylinder.

[0004] The common practice in the prior art is to set a liquid separation tank at the inlet of the compressor for preliminary liquid blocking treatment. However, this traditional liquid blocking method has obvious limitations. It can only preliminarily separate the liquid from the medium gas before entering the compressor, but cannot effectively block the liquid from the gas after compression. This makes the liquid components contained in the medium gas not completely removed after the first stage of compression, but flow into the inlet liquid separation tank of the next stage of compressor along with the medium, causing secondary contamination of the medium with liquid, increasing the water content of the medium flowing to the next stage of compressor, and seriously reducing the compression effect of the medium gas by each stage of compressor and the service life of the compressor. CONTENT OF THE INVENTION

[0005] The present application provides a reciprocating compressor liquid blocking device, which aims to improve the compression effect of each stage of compressor on the medium gas and improve the service life of the compressor.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] A reciprocating compressor liquid blocking device, comprising a plurality of buffer tank bodies, a plurality of liquid accumulation bins, a plurality of liquid level meters, a plurality of liquid discharge valves and a plurality of liquid blocking assemblies;

[0008] The plurality of buffer tank bodies are respectively arranged between the gas inlets and gas outlets of each stage of compressor body;

[0009] The plurality of liquid accumulation bins are arranged between the outlets and inlets of the corresponding buffer tank bodies, and the liquid inlets of the plurality of liquid accumulation bins are in communication with the tank bodies between the outlets and inlets of the corresponding buffer tank bodies;

[0010] The plurality of liquid level meters are fixedly arranged on one side of the corresponding liquid accumulation bin;

[0011] A plurality of liquid discharge valve groups are fixedly arranged at the liquid outlet of the corresponding liquid storage bin and are electrically connected with the corresponding liquid level meter.

[0012] A plurality of liquid blocking assemblies are fixedly arranged between the liquid inlet of the corresponding liquid storage bin and the outlet of the buffer tank body, for blocking the liquid in the medium gas flowing from the inlet to the outlet of the buffer tank body.

[0013] Further, the liquid blocking assembly comprises a support frame, a liquid blocking plate, a liquid blocking core and a liquid blocking belt.

[0014] The support frame is fixedly arranged on the inner wall of the buffer tank body near the liquid storage bin.

[0015] The liquid blocking plate has a hollow structure, a plurality of first air holes are arranged on the side of the liquid blocking plate near the support frame, a plurality of second air holes are arranged on the side of the liquid blocking plate away from the support frame, and a water draining hole is arranged on the circumferential surface of the liquid blocking plate.

[0016] The side of the liquid blocking plate near the support frame is rotationally connected to the middle part of the support frame, and a plurality of guide plates are fixedly arranged on the side of the liquid blocking plate away from the support frame, one end of each of the guide plates extends to the edge of the liquid blocking plate, and the other end of each of the guide plates extends to the center of the liquid blocking plate, forming a vortex structure.

[0017] The liquid blocking core is arranged in the interior of the liquid blocking plate.

[0018] The liquid blocking belt of the annular structure is arranged around the edge of the outlet of the buffer tank body.

[0019] Further, the coverage area of the plurality of first air holes on the corresponding surface of the liquid blocking plate is greater than the coverage area of the plurality of second air holes on the corresponding surface of the liquid blocking plate.

[0020] Further, the support frame has a cross-shaped structure, a bearing is arranged at the center of the support frame, and a connecting column is arranged on the side of the liquid blocking plate near the support frame, and the circumferential surface of the connecting column is fixedly connected to the bearing.

[0021] Further, the liquid blocking core is woven into a cylindrical mesh structure by a plurality of filamentous bodies, and has a thickness of 90-110mm and a pore size of 18-22um.

[0022] Further, the liquid discharge valve group comprises a first liquid discharge valve and a second liquid discharge valve.

[0023] The liquid inlet end of the first liquid discharge valve is in communication with the liquid outlet end of the liquid storage bin, the liquid outlet end of the first liquid discharge valve is in communication with the liquid inlet end of the second liquid discharge valve, and the liquid outlet end of the second liquid discharge valve is in communication with an external collection device.

[0024] Further, the first liquid discharge valve is in a normally closed state, and the second liquid discharge valve is in a normally open state.

[0025] The one or more technical solutions provided in the embodiments of the utility model have at least the following technical effects or advantages:

[0026] The liquid valve group of the application is automatically opened according to the received signal, and the liquid in the liquid accumulation bin is discharged, so that the phenomenon of liquid flowing into the internal structure of the next stage compressor to cause corrosion or damage of the internal structure of the compressor is avoided, thereby prolonging the service life of the compressor. The liquid blocking assembly is arranged between the liquid inlet of the liquid accumulation bin and the outlet of the buffer tank body, blocks or reduces the liquid in the medium gas from flowing to the inlet of the next stage compressor, effectively collects and discharges the liquid in the medium gas, reduces the interference of the liquid on the working process of the compressor, and further ensures the pressure boosting effect of the medium gas by the compressors at all stages. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application or the prior art. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0028] Fig. 1 The structural schematic diagram provided for the embodiments of the application is provided.

[0029] Fig. 2 And Fig. 3 The structural schematic diagram provided for the embodiments of the application is provided.

[0030] Icon: 10-buffer tank body; 20-liquid accumulation bin; 21-liquid level meter; 22-liquid discharge valve group; 221-first liquid discharge valve; 222-second liquid discharge valve; 30-supporting frame; 31-bearing; 32-liquid blocking plate; 321-first air hole; 322-second air hole; 323-drainage hole; 324-connecting column; 33-flow guide plate; 34-liquid blocking core; 35-liquid blocking belt. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] In the description of the embodiments of the utility model, it needs to be explained that, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0033] As shown in Figs. 1-3 A reciprocating compressor liquid blocking device, comprising a plurality of buffer tank bodies 10, a plurality of liquid accumulation bins 20, a plurality of liquid level meters 21, a plurality of liquid discharge valve groups 22 and a plurality of liquid blocking assemblies; a plurality of buffer tank bodies 10 are respectively arranged between the gas inlet and the gas outlet of each stage compressor body; a plurality of liquid accumulation bins 20 are arranged between the outlet and the inlet of the corresponding buffer tank body 10, and the liquid inlet of the plurality of liquid accumulation bins 20 is communicated with the tank body between the outlet and the inlet of the corresponding buffer tank body 10; a plurality of liquid level meters 21 are fixedly arranged on one side of the corresponding liquid accumulation bin 20; a plurality of liquid discharge valve groups 22 are fixedly arranged at the liquid outlet of the corresponding liquid accumulation bin 20 and are electrically connected with the corresponding liquid level meter 21; a plurality of liquid blocking assemblies are fixedly arranged between the liquid inlet of the corresponding liquid accumulation bin 20 and the outlet of the buffer tank body 10, for blocking the liquid in the medium gas flowing from the inlet to the outlet of the buffer tank body 10.

[0034] It is to be noted that, in the working process of the reciprocating compressor, the medium gas (containing a certain amount of liquid) flows between the gas inlet and the gas outlet of the compressor body. The medium gas (containing liquid) in the buffer tank body 10 is first subjected to preliminary pressure and flow buffering. The medium gas (containing liquid) in the buffer tank body 10 first deposits liquid in the liquid accumulation bin 20 due to the gravity difference, and the medium gas continues to flow. The liquid level meter 21 monitors the liquid level in the liquid accumulation bin 20 in real time. When the liquid level reaches a preset threshold, the liquid level meter 21 sends a signal to the liquid discharge valve group 22. The liquid discharge valve group 22 automatically opens according to the received signal to discharge the liquid in the liquid accumulation bin 20, avoiding the phenomenon that the liquid flows into the internal structure of the next stage compressor to cause corrosion or damage of the internal structure of the compressor, thereby prolonging the service life of the compressor. By monitoring and controlling the liquid level in the liquid accumulation bin 20 in real time, the stable flow of the medium gas between the gas inlet and the gas outlet of the compressor is ensured. The liquid blocking assembly is arranged between the liquid inlet of the liquid accumulation bin 20 and the outlet of the buffer tank body 10, blocks or reduces the liquid in the medium gas from flowing to the inlet of the next stage compressor, effectively collects and discharges the liquid in the medium gas, reduces the interference of the liquid on the working process of the compressor, and thereby ensures the pressure boosting effect of each stage compressor on the medium gas.

[0035] The liquid blocking assembly comprises a support frame 30, a liquid blocking plate 32, a liquid blocking core 34 and a liquid blocking belt 35. The support frame 30 is fixedly arranged on the inner wall of the buffer tank body 10 near the liquid accumulation bin 20. The liquid blocking plate 32 has a hollow structure. A plurality of first gas holes 321 are formed in the side surface of the liquid blocking plate 32 near the support frame 30. A plurality of second gas holes 322 are formed in the side surface of the liquid blocking plate 32 away from the support frame 30, and a plurality of water draining holes 323 are formed in the circumferential surface of the liquid blocking plate 32. The side of the liquid blocking plate 32 near the support frame 30 is rotationally connected to the middle part of the support frame 30. A plurality of guide plates 33 are fixedly arranged on the side surface of the liquid blocking plate 32 away from the support frame 30. One end of each of the plurality of guide plates 33 extends to the edge of the liquid blocking plate 32, and the other end of each of the plurality of guide plates 33 extends to the center of the liquid blocking plate 32, forming a vortex structure. The liquid blocking core 34 is arranged in the interior of the liquid blocking plate 32. The liquid blocking belt 35 in a ring structure is arranged around the edge of the outlet of the buffer tank body 10.

[0036] In the above scheme, the liquid blocking plate 32 is hollow inside, and a plurality of air holes (first air holes 321 and second air holes 322) are formed on both sides of the liquid blocking plate 32 for the passage of medium gas. The design of these air holes aims to allow the smooth passage of medium gas while producing a certain blocking effect on the liquid. The water drainage holes 323 on the edge of the liquid blocking plate 32 are used to collect and discharge the liquid accumulated during the liquid blocking process. When the medium gas flows through the liquid blocking plate 32, the liquid blocking plate 32 is rotationally connected by the support frame 30, and the flow guide plate 33 fixedly arranged on the side of the liquid blocking plate 32 away from the support frame 30 can guide the medium gas to pass through the vortex, ensuring the flow efficiency of the medium gas and enhancing the separation effect of the medium gas and the liquid. The liquid blocking core 34 arranged inside the liquid blocking plate 32 can further capture and retain the liquid, and the annular liquid blocking belt 35 is arranged around the outlet edge of the buffer tank body 10 to prevent the liquid from directly flowing out of the buffer tank body 10. The liquid blocking belt 35 can be made of rubber material to ensure that it closely fits the outlet edge of the buffer tank body 10 and forms an effective liquid barrier.

[0037] The coverage area of the plurality of first air holes 321 on the corresponding surface of the liquid blocking plate 32 is greater than the coverage area of the plurality of second air holes 322 on the corresponding surface of the liquid blocking plate 32.

[0038] In the above scheme, when the medium gas flowing through the first filtrate flows to the liquid blocking plate 32, the medium gas will first pass through the second air holes 322. Since the total coverage area of the second air holes 322 is small, the medium gas will be throttled when flowing into the liquid blocking plate 32, and then the medium gas will continue to flow through the hole cavity inside the liquid blocking plate 32 to the first air holes 321. The small second air holes 322 inhibit the flow rate of the medium gas, thereby increasing the contact time of the medium gas with the surface of the liquid blocking plate 32 and its internal structure, and improving the separation efficiency of the liquid; since the total coverage area of the first air holes 321 is large, the medium gas can pass through at a relatively high speed, and at the same time, the kinetic energy of the medium gas is used to throw part of the liquid to the edge of the liquid blocking plate 32, and the liquid is discharged through the water drainage holes 323 and continues to flow to the outlet of the buffer tank body 10.

[0039] The support frame 30 is in the shape of a cross, and a bearing 31 is arranged at the center thereof. The side of the liquid blocking plate 32 close to the support frame 30 is provided with a connecting column 324, and the peripheral surface of the connecting column 324 is fixedly connected with the bearing 31.

[0040] In the above scheme, when the medium gas carrying liquid passes through the liquid blocking assembly, the liquid blocking plate 32 will be subjected to the force generated by the flow of medium gas and the force generated by the impact of liquid. These forces will cause the liquid blocking plate 32 to have a certain rotation tendency, but due to the fixed connection of the connecting column 324 and the bearing 31, the liquid blocking plate 32 can rotate smoothly and freely on the support frame 30. Through the rotation of the liquid blocking plate 32, the angle of the gas hole and the flow guide plate 33 relative to the direction of the medium gas flow can be dynamically adjusted, thereby optimizing the liquid blocking effect. During the rotation of the liquid blocking plate 32, the water draining holes 323 at the edges of the liquid blocking plate 32 will be periodically exposed to the downstream position of the medium gas flow, which helps to more effectively drain the liquid accumulated on the liquid blocking plate 32 and prevent the accumulation of liquid inside the liquid blocking assembly.

[0041] The liquid blocking core 34 is woven into a cylindrical mesh structure by a plurality of filaments, and its thickness is 90-110mm, and its porosity is 18-22um.

[0042] In the above scheme, the cylindrical mesh structure of the liquid blocking core 34 provides a large number of micro-pores. When the medium gas carrying micro-droplets passes through the liquid blocking core 34, the mesh structure woven by multiple layers of filaments provides a rich filtering layer that can more effectively capture and retain liquid components. The droplets will be blocked and adsorbed by the pore walls, thereby achieving effective separation of droplets from the medium gas. The thickness of the liquid blocking core 34 is set to 90-110mm, which ensures that the liquid blocking core 34 has sufficient volume to accommodate and store the separated liquid. When the medium gas passes through the liquid blocking core 34, it will flow along the mesh paths woven by the filaments, which are both tortuous and interconnected, thereby achieving effective dispersion and uniform flow of the medium gas. Preferably, the thickness of the liquid blocking core 34 in the present application is 100mm, and the porosity is 20um.

[0043] The liquid discharge valve group 22 includes a first liquid discharge valve 221 and a second liquid discharge valve 222. The liquid inlet end of the first liquid discharge valve 221 is in communication with the liquid outlet end of the liquid accumulation tank 20, and the liquid outlet end is in communication with the liquid inlet end of the second liquid discharge valve 222. The liquid outlet end of the second liquid discharge valve 222 is in communication with an external collection device.

[0044] When the liquid-blocking assembly is in operation, the liquid components in the medium gas are effectively blocked and separated, and accumulate in the liquid accumulation bin 20. Over time, the amount of liquid in the liquid accumulation bin 20 gradually increases, and when the preset liquid discharge condition is reached, the liquid discharge process is started. When the liquid discharge condition is met, the valve between the liquid inlet end of the first liquid discharge valve 221 and the liquid outlet end of the liquid accumulation bin 20 is opened, allowing the liquid in the liquid accumulation bin 20 to pass through. After the liquid passes through a certain throttle and buffer inside the first liquid discharge valve 221, it continues to flow to the liquid inlet end of the second liquid discharge valve 222. After the liquid reaches the liquid inlet end of the second liquid discharge valve 222, the valve of the second liquid discharge valve 222 also opens accordingly, allowing the liquid to pass through and flow to the liquid outlet end thereof. The liquid outlet end of the second liquid discharge valve 222 is in communication with an external collection device (such as a liquid storage tank, a sewage pipeline, etc.), thereby safely and effectively discharging the liquid out of the system. By arranging the series structure of the first liquid discharge valve 221 and the second liquid discharge valve 222, the application ensures that the liquid accumulated in the liquid accumulation bin 20 can be timely and effectively discharged from the system, thereby avoiding damage to the compressor and other equipment.

[0045] The first liquid discharge valve 221 is in a normally closed state, and the second liquid discharge valve 222 is in a normally open state.

[0046] In the above scheme, under normal circumstances, the first liquid discharge valve 221 is in a closed state, which effectively prevents the liquid in the liquid accumulation bin 20 from flowing out without reason. When the liquid in the liquid accumulation bin 20 reaches the preset liquid discharge condition (such as liquid level height, pressure, etc.), the control system will issue an instruction to open the first liquid discharge valve 221. Once the first liquid discharge valve 221 is opened, the liquid in the liquid accumulation bin 20 can flow through it to the second liquid discharge valve 222.

[0047] The second liquid discharge valve 222 remains open under normal circumstances, ensuring that the liquid flowing from the first liquid discharge valve 221 can smoothly flow to the external collection device. Since the second liquid discharge valve 222 is in a normally open state, it does not require an additional control system to operate it, thereby simplifying the complexity of the entire liquid discharge system.

[0048] When the first liquid discharge valve 221 is closed, the second liquid discharge valve 222 remains open, but at this time there is no liquid flowing in, so it is actually in standby state;

[0049] When the first liquid discharge valve 221 is opened, the liquid in the liquid accumulation bin 20 begins to flow out and flows to the external collection device through the second liquid discharge valve 222. As the liquid continues to flow out, the liquid level in the liquid accumulation bin 20 gradually decreases. When the liquid level decreases to the preset safety range, the control system will issue an instruction to close the first liquid discharge valve 221, thereby ending the liquid discharge process.

[0050] The present application can realize precise control of the liquid discharge process by setting the first liquid discharge valve 221 to a normally closed state and opening it only when certain conditions are met, preventing liquid from flowing out when it is not needed, thereby maintaining the stability and cleanliness of the system. The normally open state of the second liquid discharge valve 222 simplifies the complexity of the entire liquid discharge system, eliminating the need for an additional control system to operate the second liquid discharge valve 222, reducing the maintenance and use costs of the system. The normally open state of the second liquid discharge valve 222 ensures that the liquid flowing out of the first liquid discharge valve 221 can flow smoothly to the external collection device, reducing the problem of poor liquid discharge or leakage caused by valve failure, thereby improving the reliability of the system.

[0051] The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0052] The above examples are only used to illustrate the technical solutions of the present application, and are not limited to the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A liquid blocking device for a reciprocating compressor, characterized by, The application relates to a buffer tank body (10), a liquid accumulation bin (20), a liquid level meter (21), a liquid discharge valve group (22) and a liquid blocking assembly. The buffer tank body (10) is arranged between the air inlet and the air outlet of each stage compressor body. The liquid accumulation bin (20) is arranged between the outlet and the inlet of the corresponding buffer tank body (10), and the liquid inlet of the liquid accumulation bin (20) is communicated with the tank body between the outlet and the inlet of the corresponding buffer tank body (10). The liquid level meter (21) is fixedly arranged on one side of the corresponding liquid accumulation bin (20). The liquid discharge valve group (22) is fixedly arranged at the liquid outlet of the corresponding liquid accumulation bin (20) and is electrically connected with the corresponding liquid level meter (21). The liquid blocking assembly is fixedly arranged between the liquid inlet of the corresponding liquid accumulation bin (20) and the outlet of the buffer tank body (10) and is used for blocking or reducing the liquid in the medium gas flowing from the inlet to the outlet of the buffer tank body (10).

2. The liquid blocking device for a reciprocating compressor according to claim 1, wherein The liquid blocking assembly comprises a supporting frame (30), a liquid blocking plate (32), a liquid blocking core (34) and a liquid blocking belt (35). The supporting frame (30) is fixedly arranged on the inner wall of the side of the buffer tank body (10) close to the liquid accumulation bin (20). The liquid blocking plate (32) is internally hollow, a plurality of first air holes (321) are formed in the side of the liquid blocking plate (32) close to the supporting frame (30), a plurality of second air holes (322) are formed in the side of the liquid blocking plate (32) away from the supporting frame (30), and a water draining hole (323) is formed in the circumferential surface of the liquid blocking plate (32). The side of the liquid blocking plate (32) close to the supporting frame (30) is rotationally connected with the middle part of the supporting frame (30), and a plurality of flow guides (33) are fixedly arranged on the side of the liquid blocking plate (32) away from the supporting frame (30), one end of each of the flow guides (33) extends to the edge of the liquid blocking plate (32), and the other end of each of the flow guides (33) extends to the center of the liquid blocking plate (32), thereby forming a vortex structure. The liquid blocking core (34) is arranged in the interior of the liquid blocking plate (32). The liquid blocking belt (35) in a ring structure is arranged around the edge of the outlet of the buffer tank body (10).

3. The liquid blocking device for a reciprocating compressor according to claim 2, wherein The covering area of the plurality of first air holes (321) on the corresponding surface of the liquid blocking plate (32) is greater than the covering area of the plurality of second air holes (322) on the corresponding surface of the liquid blocking plate (32).

4. The liquid blocking device for a reciprocating compressor according to claim 3, wherein The supporting frame (30) is in a cross structure, a bearing (31) is arranged in the center of the supporting frame (30), a connecting column (324) is arranged on the side of the liquid blocking plate (32) close to the supporting frame (30), and the circumferential surface of the connecting column (324) is fixedly connected with the bearing (31).

5. The liquid blocking device for a reciprocating compressor according to claim 2, wherein The liquid blocking core (34) is woven into a cylindrical mesh structure by a plurality of filamentous bodies, the thickness of the liquid blocking core (34) is 90-110 mm, and the aperture of the liquid blocking core (34) is 18-22 um.

6. The liquid blocking device for a reciprocating compressor according to claim 1, wherein The liquid discharge valve group (22) comprises a first liquid discharge valve (221) and a second liquid discharge valve (222). The liquid inlet end of the first liquid discharge valve (221) is communicated with the liquid outlet end of the liquid storage bin (20), the liquid outlet end is communicated with the liquid inlet end of the second liquid discharge valve (222), and the liquid outlet end of the second liquid discharge valve (222) is communicated with an external collection device.

7. The liquid blocking device for a reciprocating compressor according to claim 6, wherein The first liquid discharge valve (221) is in a normally closed state, and the second liquid discharge valve (222) is in a normally open state.

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