Novel four-way valve body assembly

Abstract

The novel four-way valve body assembly comprises a main valve body, the top of the main valve body is fixedly communicated with a main air pipe, the bottom of the main valve body is fixedly communicated with a first air pipe, a second air pipe and an air return pipe, and the interior of the main valve body is connected with two piston blocks in a sliding mode; a limiting strip is connected to the interior of the middle fixed block in a clamped mode, a side fixed block is connected to the exterior of the limiting strip in a clamped mode, the interior of the side fixed block is in threaded connection with a locking block through a second fixing bolt, an annular frame fixedly sleeves the exterior of the main valve body, a buffering cushion block is fixedly connected to the exterior of the annular frame, and the exterior of the buffering cushion block is attached to the air return pipe. By means of the structure, the locking block and the side fixing block are reinforced through the second fixing bolt and matched with the middle fixing block and the limiting strip, the assembling stability of the valve body can be enhanced, displacement caused by mechanical vibration is avoided, in addition, the annular frame and the buffering cushion block can reduce high-pressure impact at the connecting position by attaching the air return pipe, and therefore the compression strength of the valve body is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of four-way valve body components, and in particular to a novel four-way valve body component. Background Technology

[0002] In modern refrigeration and heat pump systems, the four-way valve, as a core component for switching refrigerant flow, directly impacts the system's operating efficiency and reliability. As industrial equipment evolves towards higher power and higher frequency operation, the structural stability and pressure resistance of its valve body components directly affect the equipment's reliability and lifespan. Traditional four-way valves often use single bolt connections or simple snap-fit ​​structures between components during assembly. Under the mechanical vibrations generated during long-term operation, components are prone to loosening and displacement, leading to decreased valve sealing and even functional failure. Furthermore, during frequent start-ups and shutdowns of the refrigeration system, the return pipe connection experiences significant pressure shocks. Existing valve body components often lack effective buffer structures, making the connection a weak point in pressure resistance and limiting the improvement of the overall pressure resistance of the valve body. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a new type of four-way valve body assembly, which solves the problem that the components are prone to loosening and displacement due to mechanical vibration during long-term operation of the equipment, and further solves the problem that the connection of the return air pipe becomes a weak point in pressure resistance when subjected to large pressure impact, which leads to deformation of the interface.

[0004] This utility model also provides a novel four-way valve body assembly, comprising: a main valve body, the top of which is fixedly connected to a main air pipe, and the bottom of which is fixedly connected to a first air pipe, a second air pipe, and a return air pipe; two piston blocks are slidably connected inside the main valve body, the two piston blocks are fixedly connected by a shaft, a slider is fixedly connected outside the shaft, the slider is slidably connected to the inside of the main valve body, and locking blocks are threaded to both ends of the main valve body; a middle fixing block, the inside of which is fixedly connected to the return air pipe, a limit strip is engaged inside the middle fixing block, the limit strip is threadedly connected to the middle fixing block by a first fixing bolt, a side fixing block is engaged outside the limit strip, the side fixing block is threadedly connected to the locking block by a second fixing bolt, an annular frame is fixedly sleeved outside the main valve body, a buffer pad is fixedly connected outside the annular frame, and the buffer pad is in contact with the return air pipe. The locking block and the side fixing block are reinforced by the second fixing bolt, and together with the center fixing block and the limit strip, they can enhance the stability of the valve body assembly and avoid displacement caused by mechanical vibration. In addition, the ring frame and the buffer pad can reduce the high pressure impact at the connection point by fitting the return air pipe, thereby improving the pressure resistance of the valve body.

[0005] According to the present invention, a novel four-way valve body assembly includes two symmetrically arranged stop blocks fixedly connected inside the main valve body. During operation, the outer surfaces of these stop blocks abut against a piston block. By blocking the piston block, excessive movement of the piston block is prevented.

[0006] According to the present invention, a novel four-way valve body assembly comprises two air pipes, a first air pipe and a second air pipe, symmetrically distributed on both sides of a return air pipe. The first and second air pipes are sequentially used in conjunction with the return air pipe. The first and second air pipes are symmetrically distributed with the return air pipe as the axis, forming a dual-channel switching structure. The return air pipe can be selectively connected to either air pipe by sliding block displacement.

[0007] According to the present invention, a novel four-way valve body assembly is provided, wherein the shape of the slider matches and fits tightly to the interior of the main valve body, and the slider has a hollow structure with an opening at the bottom. A bidirectional flow channel can be formed through the hollow structure of the slider.

[0008] According to the present invention, a novel four-way valve body assembly includes two symmetrically distributed side fixing blocks located on either side of a central fixing block. The mating ends of both the side fixing blocks and the central fixing block are provided with grooves matching the first air pipe. The first and second air pipes have the same radius. Through the cooperation of the central and side fixing blocks, lateral support can be provided for the first and second air pipes, thereby preventing structural displacement.

[0009] According to the present invention, in a novel four-way valve body assembly, the ends of the annular frame are engaged with the interior of the locking block, and the annular frame is a cylindrical structure. The annular frame protects the exterior of the main valve body and also secures the buffer pad.

[0010] According to the present invention, a novel four-way valve body assembly includes two buffer pads symmetrically distributed on both sides of the main valve body. The outer surface of each buffer pad is in contact with the first air pipe, and the outer surface of each buffer pad is in contact with the second air pipe. The buffer pads provide support and protection at the connection points between the first and second air pipes and the main valve body, and can evenly distribute the vibration stress of the pipeline.

[0011] According to the present invention, a novel four-way valve body assembly includes a connecting port inside the locking block, and a T-shaped cross-section for the limiting strip. The connecting port connects to the pilot valve's pipeline, allowing a pressure difference to occur between the two ends of the main valve body, thereby switching the flow path.

[0012] Beneficial effects: Compared with the prior art, the new four-way valve body assembly of this novel type has a locking block and a side fixing block reinforced by a second fixing bolt, and together with a center fixing block and a limit strip, it can enhance the stability of the valve body assembly and avoid displacement caused by mechanical vibration. In addition, the ring frame and the buffer pad block can reduce the high pressure impact at the connection point by fitting the return air pipe, thereby improving the pressure resistance of the valve body. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is a complete structural diagram of a novel four-way valve body assembly according to this utility model;

[0015] Figure 2 This is a side view of the valve body assembly of a novel four-way valve according to the present invention.

[0016] Figure 3 This is a diagram showing the internal structure of the main valve body of a novel four-way valve body assembly according to this utility model.

[0017] Figure 4 This is a structural diagram of the fixing mechanism of a novel four-way valve body assembly according to this utility model.

[0018] Legend:

[0019] 1. Main valve body; 2. Main air pipe; 3. No. 1 air pipe; 4. No. 2 air pipe; 5. Return air pipe; 6. Piston block; 7. Shaft body; 8. Slider; 9. Locking block; 10. Center stop block; 11. Limiting strip; 12. First fixing bolt; 13. Side stop block; 14. Second fixing bolt; 15. Ring frame; 16. Buffer pad; 17. Stop block; 18. Connection port. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] Reference Figure 1-4This utility model embodiment discloses a novel four-way valve body assembly, comprising: a main valve body 1, a main air pipe 2 fixedly connected to the top of the main valve body 1, and a first air pipe 3, a second air pipe 4, and a return air pipe 5 fixedly connected to the bottom of the main valve body 1. The first air pipe 3 and the second air pipe 4 are symmetrically distributed on both sides of the return air pipe 5 and are used in sequence with the return air pipe 5. Two piston blocks 6 are slidably connected inside the main valve body 1. The two piston blocks 6 are fixedly connected by a shaft 7. A slider 8 is fixedly connected to the outside of the shaft 7. The outside of the slider 8 is slidably connected to the inside of the main valve body 1. The shape of the slider 8 matches and fits tightly to the inside of the main valve body 1. The slider 8 is a cavity structure with an opening at the bottom. Two symmetrically arranged stop blocks 17 are fixedly connected inside the main valve body 1. The outside of the stop blocks 17 abuts against the piston blocks 6 when working. Locking blocks 9 are threadedly connected to both ends of the main valve body 1. The locking blocks 9 have a connection port 18 inside.

[0022] Specifically, the main valve body 1 is connected to the high-pressure source through the top main gas pipe 2. The first gas pipe 3 and the second gas pipe 4, which are symmetrically distributed at the bottom, form a bidirectional flow path with the return gas pipe 5. The return gas pipe 5 serves as the central hub of the low-pressure circuit to achieve refrigerant diversion. The double piston block 6 is rigidly connected through the shaft body 7, which drives the cavity slider 8 with the bottom opening to slide. The slider 8 slides with the interior of the main valve body 1, and the cavity structure of the slider 8 can guide the fluid to flow in a specific direction. The stop block 17 restricts the piston stroke, thereby ensuring positioning accuracy. When the piston block 6 is driven by pressure, the slider 8 is displaced so that the first gas pipe 3 or the second gas pipe 4 can selectively connect to the return gas pipe 5 to achieve refrigerant flow switching.

[0023] The central fixing block 10 is fixedly connected to the return air pipe 5. The internal part of the central fixing block 10 is engaged with the limiting strip 11. The limiting strip 11 has a T-shaped cross-section. The internal part of the limiting strip 11 is threadedly connected to the central fixing block 10 through the first fixing bolt 12. The external part of the limiting strip 11 is engaged with the side fixing block 13. The internal part of the side fixing block 13 is threadedly connected to the locking block 9 through the second fixing bolt 14. The external part of the main valve body 1 is fixedly fitted with an annular frame 15. The ends of the annular frame 15 are engaged with the internal part of the locking block 9. The annular frame 15 has a cylindrical structure. The external part of the annular frame 15 is fixedly connected with a buffer pad 16. The external part of the buffer pad 16 is in contact with the return air pipe 5. There are two buffer pads 16, which are symmetrically distributed on both sides of the main valve body 1. The external part of the buffer pad 16 is in contact with the first air pipe 3 and the second air pipe 4.

[0024] Specifically, the center fixing block 10, as the central fixing component, forms a precise engagement with the T-shaped section of the limiting strip 11 through the internal T-slot, thereby achieving radial limiting. The cylindrical structure of the ring frame 15 is sleeved on the main valve body 1, and its end is engaged with the locking block 9, thereby enhancing the overall structural stability. The buffer pad 16 on the outside of the ring frame 15 can protect the connection of the main valve body 1, preventing it from being greatly affected by external impact.

[0025] There are two side fixing blocks 13, which are symmetrically distributed. The two side fixing blocks 13 are located on both sides of the middle fixing block 10. The mating ends of the side fixing blocks 13 and the middle fixing block 10 are provided with grooves that match the first air pipe 3. The first air pipe 3 and the second air pipe 4 have the same radius.

[0026] Specifically, the two side fixing blocks 13 are symmetrically distributed on both sides of the middle fixing block 10. They are connected to the No. 1 air pipe 3 through grooves, which can effectively prevent the No. 1 air pipe 3 from radially shifting, thereby avoiding stress concentration on one side.

[0027] Working principle: First, the connection port 18 in the locking block 9 at both ends of the main valve body 1 is connected to the pilot valve through a pipeline. The two piston blocks 6 are rigidly connected by the shaft 7. When in use, the system pressure difference is used to push the slider 8 to move. When the left chamber formed by the main valve body 1 and the piston block 6 is under high pressure, the piston block 6 will drive the slider 8 to move to the right, thereby connecting the main air pipe 2 to the first air pipe 3. When the right chamber formed by the main valve body 1 and the piston block 6 is under high pressure, the piston block 6 will drive the slider 8 to move to the left, thereby connecting the main air pipe 2 to the second air pipe 4. In addition, during installation, the central fixing block 10 is rigidly connected to the return air pipe 5, which ensures that the return air pipe 5 can maintain a fixed position. It works with the side fixing block 13 to achieve lateral positioning by engaging the limiting strip 11, and is fixed to the locking block 9 by the second fixing bolt 14 to form a multi-level locking. The buffer pad 16 is fixed by the ring frame 15, and the elastic material of the buffer pad 16 absorbs the vibration energy of the pipeline, thereby reducing the impact and preventing damage to the weak connection of the main valve body 1.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A novel four-way valve body assembly, characterized in that, include: The main valve body (1) has a main air pipe (2) fixedly connected to its top and a first air pipe (3), a second air pipe (4) and a return air pipe (5) fixedly connected to its bottom. The main valve body (1) has two piston blocks (6) slidably connected inside. The two piston blocks (6) are fixedly connected by a shaft (7). The shaft (7) has a slider (8) fixedly connected to its outside. The slider (8) is slidably connected to the inside of the main valve body (1). Both ends of the main valve body (1) are threaded with locking blocks (9). The center fixed block (10) is fixedly connected to the return air pipe (5) inside. The center fixed block (10) is engaged with the limit strip (11) inside. The limit strip (11) is threadedly connected to the center fixed block (10) inside by the first fixing bolt (12). The limit strip (11) is engaged with the side fixed block (13) outside. The side fixed block (13) is threadedly connected to the locking block (9) inside by the second fixing bolt (14). The main valve body (1) is fixedly sleeved with an annular frame (15) outside. The annular frame (15) is fixedly connected with a buffer pad (16) outside. The buffer pad (16) is in contact with the return air pipe (5) outside.

2. The novel four-way valve body assembly according to claim 1, characterized in that, The main valve body (1) has two symmetrically arranged baffles (17) fixedly connected inside. When the baffles (17) are working, they abut against the piston block (6).

3. The novel four-way valve body assembly according to claim 1, characterized in that, The No. 1 air tube (3) and the No. 2 air tube (4) are symmetrically distributed on both sides of the return air tube (5), and the No. 1 air tube (3) and the No. 2 air tube (4) are used in conjunction with the return air tube (5) in turn.

4. The novel four-way valve body assembly according to claim 1, characterized in that, The shape of the slider (8) matches and fits tightly with the interior of the main valve body (1). The slider (8) is a cavity structure with an opening at the bottom.

5. A novel four-way valve body assembly according to claim 1, characterized in that, There are two side fixing blocks (13) and they are symmetrically distributed. The two side fixing blocks (13) are located on both sides of the middle fixing block (10). The mating ends of the side fixing blocks (13) and the middle fixing block (10) are provided with grooves that match the first air pipe (3). The first air pipe (3) and the second air pipe (4) have the same radius.

6. A novel four-way valve body assembly according to claim 1, characterized in that, The ends of the ring frame (15) are all engaged with the inside of the locking block (9), and the ring frame (15) is a cylindrical structure.

7. A novel four-way valve body assembly according to claim 1, characterized in that, There are two buffer pads (16) symmetrically distributed on both sides of the main valve body (1). The outside of the buffer pads (16) is in contact with the first air pipe (3), and the buffer pads (16) are in contact with the second air pipe (4).

8. A novel four-way valve body assembly according to claim 1, characterized in that, The locking block (9) has an internal connection port (18), and the limiting strip (11) has a T-shaped cross-section.

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