Stop valve for refrigerating system

Abstract

The utility model discloses a stop valve for a refrigerating system, which comprises a stop valve body for the refrigerating system, and is characterized in that one end of the stop valve body for the refrigerating system is provided with a first channel, and the top end of the stop valve body for the refrigerating system is provided with a second channel; according to the stop valve body for the refrigerating system, after the stop valve body for the refrigerating system is used and the first channel and the second channel are connected with a pipeline, a port or a pipeline needing to be connected, the stop valve body can move through the connecting ring, and the stop valve body for the refrigerating system can be connected with the port or the pipeline. The sealing sacculus and the silica gel sealing gasket abut against the connecting positions of the first channel and the second channel and a pipeline or a port or a pipeline needing to be connected, then auxiliary sealing is carried out, the leakage condition is reduced, meanwhile, the connecting ring, the sealing sacculus and other components can be self-limited, and convenience and stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of shut-off valve technology, specifically a shut-off valve for a refrigeration system. Background Technology

[0002] In refrigeration systems, various valves are typically used to control the refrigerant. For example, in air conditioning systems, shut-off valves are used to connect the outdoor and indoor units. A shut-off valve is a manually operable valve that disconnects the refrigerant and other fluid passages before installation and reconnects them during installation.

[0003] In the existing technology, the shut-off valves used in refrigeration systems are difficult to maintain during use. However, due to different environmental factors, the shut-off valve connection is often a flange connection or a threaded connection. However, this method may lead to leakage later.

[0004] A search revealed a Chinese patent document (publication number: CN107366750A) disclosing a shut-off valve for a refrigeration system. This invention provides a shut-off valve for a refrigeration system that achieves reliable valve stem positioning through the cooperation of the valve stem and valve body, eliminating the need for auxiliary components such as retaining rings. This avoids safety hazards caused by the installation of auxiliary components and improves operational safety. The shut-off valve provided by this invention includes a valve body with a valve port and a valve stem for opening and closing the valve port. The valve body has a first positioning part, and the valve stem has a second positioning part. When the valve port is fully open, the first positioning part cooperates with the second positioning part to position the valve stem. In this invention, the valve body and valve stem have mutually cooperating positioning parts, allowing the valve stem to be positioned by the valve body after installation, eliminating the need for auxiliary components such as retaining rings. This prevents unreliable valve stem positioning due to missing, improperly installed, or incorrectly installed auxiliary components, thus avoiding safety accidents such as valve stem ejection. This increases the operational safety and reliability of the shut-off valve. However, the following drawbacks still exist:

[0005] While the aforementioned gate valve for refrigeration systems features a mutually cooperating positioning part between the valve body and valve stem, allowing the valve stem to be positioned by the valve body after installation without the need for auxiliary parts such as retaining rings, it also prevents unreliable valve stem positioning due to the omission, improper installation, or incorrect installation of auxiliary parts, thus avoiding safety accidents such as valve stem flying out and increasing the safety and reliability of the gate valve. However, existing gate valves for refrigeration systems are difficult to maintain during use. Due to varying environmental factors, gate valve connections are often flanged or threaded, which may lead to leakage later on. Utility Model Content

[0006] The purpose of this utility model is to provide a shut-off valve for a refrigeration system, in order to solve the problem mentioned in the background art that the shut-off valve for a refrigeration system is difficult to maintain during use. However, due to different environmental factors, the connection end of the shut-off valve is often a flange connection or a threaded connection, but this method may lead to leakage later.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a shut-off valve for a refrigeration system, comprising a shut-off valve body for a refrigeration system, characterized in that: a first channel is provided at one end of the shut-off valve body for a refrigeration system, and a second channel is provided at the top of the shut-off valve body for a refrigeration system; a connecting port is provided below the second channel and connected to the bottom end of the shut-off valve body for a refrigeration system; a connection port is provided at the end of the shut-off valve body for a refrigeration system away from the first channel; mounting rings are installed on the outer walls of both the first channel and the second channel; mounting cavities are installed on both sides of the mounting rings via connecting blocks; movable blocks are movably connected through the interior of the mounting cavities; and the movable blocks are installed on the outer walls of both sides of the connecting rings; a sealing ball is installed on the inner wall of the connecting rings.

[0008] Preferably, the bottom end of the connecting port is threaded with a dustproof sealing block.

[0009] Preferably, one end of the connection port is internally threaded with a valve stem, and one end of the valve stem abuts against two limit blocks.

[0010] Preferably, a snap-fit ​​block is installed at one end of the limiting block, and the snap-fit ​​block is made of magnetic material. The snap-fit ​​block snaps into the inside of the snap-fit ​​groove, and the snap-fit ​​groove is symmetrically opened on the inner side wall of the connection port. Magnetic absorbing pieces are embedded inside the snap-fit ​​groove, and one end of the magnetic absorbing piece is magnetically attracted to one end of the snap-fit ​​block.

[0011] Preferably, flexible sheets are symmetrically installed inside the mounting cavity, and first limiting protrusions are installed at equal intervals on the outer walls of the flexible sheets. The outer walls of the first limiting protrusions abut against the outer walls of the second limiting protrusions, and the second limiting protrusions are symmetrically installed at equal intervals on both sides of the movable block.

[0012] Preferably, the inner wall of the sealing balloon is fitted with a silicone sealing gasket, and the inner wall of the silicone sealing gasket abuts against the outer wall of the first channel and the second channel.

[0013] Preferably, one end of each connecting ring is bolted with a mounting plate, the mounting plate has a hollow structure, and one end of the mounting plate is fitted with a connecting cover, while the other end of the connecting cover is fitted with an elastic band.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. After the shut-off valve body of this utility model is used in the refrigeration system, when the first channel and the second channel are connected to the required pipe, port or pipeline, the connecting ring can move to make the sealing ball and the silicone sealing gasket both abut against the connection between the first channel and the second channel and the required pipe, port or pipeline, thereby performing auxiliary sealing and reducing leakage. At the same time, the connecting ring and the sealing ball and other components can self-limit, thereby improving convenience and stability.

[0016] 2. In use, this utility model uses a limiting block and a snap-fit ​​block to snap into the snap-fit ​​groove, and a magnetic absorbing sheet to magnetically attract the snap-fit ​​block with a magnetic material structure. This achieves the limiting of the valve stem after installation, thereby improving the stability of the valve stem and the overall stability of the shut-off valve body of the refrigeration system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the combined components of the shut-off valve body, first channel, second channel, connecting port, and connecting port used in the refrigeration system of this utility model.

[0019] Figure 3 This is a schematic diagram of the combined component structure of the connecting port, valve stem, and limiting block in this utility model;

[0020] Figure 4 This is a schematic diagram of the combined parts structure of the mounting ring, mounting cavity, movable block, connecting ring, sealing ball and silicone sealing gasket in this utility model;

[0021] Figure 5 This is a cross-sectional structural diagram of the mounting cavity in this utility model;

[0022] Figure 6 This is a schematic diagram of the combined component structure of the limiting block and the snap-fit ​​block in this utility model.

[0023] In the diagram: 1. Shut-off valve body for refrigeration system; 2. First channel; 3. Second channel; 4. Connection port; 5. Connecting port; 6. Dustproof sealing block; 7. Valve stem; 8. Limiting block; 9. Snap-fit ​​block; 10. Mounting ring; 11. Mounting cavity; 12. Flexible sheet; 13. First limiting protrusion; 14. Second limiting protrusion; 15. Movable block; 16. Connecting ring; 17. Sealing ball; 18. Silicone sealing gasket; 19. Mounting plate; 20. Connecting cover; 21. Elastic band. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example

[0025] Please see Figure 1-6 This utility model provides a shut-off valve for a refrigeration system, including a shut-off valve body 1. One end of the shut-off valve body 1 is integrally formed with a first channel 2, and the top end of the shut-off valve body 1 is integrally formed with a second channel 3. Below the second channel 3, there is an integrally formed connecting port 5 that communicates with the bottom end of the shut-off valve body 1. The inner side wall of the connecting port 5 is threaded with a dustproof sealing block 6 for dust protection. One end of the connecting port 4 is internally threaded with a valve stem 7 for opening and closing.

[0026] The first channel 2 and the second channel 3 are connected to the corresponding ports, and the valve stem 7 is connected to the internal thread of one end of the connection port 4 so that the valve stem 7 can achieve the shut-off function. At the same time, when the first channel 2 and the second channel 3 are not in use, the dustproof sealing block 6 can be installed to extend into the interior of the shut-off valve body 1 of the refrigeration system for dust protection.

[0027] The inner sidewall of the connection port 4 is symmetrically provided with snap-fit ​​grooves, and each snap-fit ​​groove is inlaid with a magnetic absorbing piece. One end of the magnetic absorbing piece is magnetically attracted to one end of the snap-fit ​​block 9 which is snapped into the snap-fit ​​groove. The other end of the snap-fit ​​block 9 is fixedly connected to the limit block 8, and the end of the limit block 8 near the snap-fit ​​block 9 abuts against the outer sidewall of the valve stem 7.

[0028] With the setting of the limiting block 8, when the valve stem 7 is installed and limited, it can be engaged with the snap-fit ​​block 9 to the inside of the snap-fit ​​groove through the limiting block 8 and the snap-fit ​​block 9 with the magnetic material structure through the magnetic attraction piece, thereby limiting the limiting block 8, so that the limiting block 8 limits the valve stem 7.

[0029] The outer walls of the first channel 2 and the second channel 3 are both fixedly connected with mounting rings 10, and the outer walls of both sides of the mounting rings 10 are fixedly connected with connecting blocks of an "L" shape. The other end of the connecting blocks is fixedly connected to the outer wall of the mounting cavity 11. The interior of the mounting cavity 11 is symmetrically fixedly connected with flexible sheets 12, and the outer walls of the corresponding flexible sheets 12 are fixedly connected with first limiting protrusions 13 of a semi-cylindrical structure at equal intervals. The outer walls of the first limiting protrusions 13 abut against the outer walls of the second limiting protrusions 14 of a semi-cylindrical structure. The second limiting protrusions 14 are symmetrically fixedly connected to the outer walls of both sides of the movable blocks 15. The movable blocks 15 are fixedly connected with connecting rings 16, and the inner wall of the connecting rings 16 is fixedly connected with a sealing balloon 17 of an inflatable structure. The sealing balloon 17 is a circular structure, and the inner wall of the sealing balloon 17 is bonded and fixedly connected with a silicone sealing gasket 18.

[0030] After the first channel 2 and the second channel 3 are connected to the required pipe, port or pipeline, the connecting ring 16 can move to make the sealing balloon 17 and the silicone sealing gasket 18 abut against the connection between the first channel 2 and the second channel 3 and the required pipe, port or pipeline, thereby performing auxiliary sealing and reducing leakage. At the same time, after the connecting ring 16 moves, the movable block 15 moves inside the mounting cavity 11, and the outer side wall of the first limiting protrusion 13 abuts against the outer side wall of the second limiting protrusion 14, thus limiting the movable block 15.

[0031] One end of each connecting ring 16 is fixedly connected to a mounting plate 19 with a hollow structure by bolts, and one end of the mounting plate 19 is fixedly connected to one end of the connecting cover 20, while the other end of the connecting cover 20 is fixedly connected to one end of the elastic band 21.

[0032] When the sealing balloon 17 and the silicone sealing gasket 18 both abut against the connection point between the first channel 2 and the second channel 3 and the pipe, port or pipeline to be connected, they are connected to the outer wall of the connection point between the first channel 2 and the second channel 3 and the pipe, port or pipeline to be connected by the elastic band 21. This effectively reduces the instability caused by dust and humid air.

[0033] The specific usage process in this embodiment is as follows:

[0034] First, the refrigeration system shut-off valve body 1 is fixed and limited by bolts and other components. The first channel 2 and the second channel 3 are connected to the corresponding ports. The valve stem 7 is connected to the internal thread of one end of the connection port 4 so that the valve stem 7 can achieve the shut-off function. At the same time, when the first channel 2 and the second channel 3 are not in use, a dustproof sealing block 6 can be installed to extend into the interior of the refrigeration system shut-off valve body 1 for dust protection.

[0035] Secondly, after the valve stem 7 is installed and limited, it can be engaged with the locking block 9 by the limiting block 8 and the locking block 9, which is made of magnetic material, and then the limiting block 8 is limited, thereby limiting the valve stem 7 by the limiting block 8.

[0036] Afterwards, when the first channel 2 and the second channel 3 are connected to the required pipe, port or pipeline, the connecting ring 16 can be moved to make the sealing balloon 17 and the silicone sealing gasket 18 both abut against the connection between the first channel 2 and the second channel 3 and the required pipe, port or pipeline, thereby performing auxiliary sealing and reducing leakage.

[0037] Finally, after the sealing bulb 17 and the silicone sealing gasket 18 both abut against the connection point between the first channel 2 and the second channel 3 and the pipe, port or pipe to be connected, they are connected to the outer wall of the connection point between the first channel 2 and the second channel 3 and the pipe, port or pipe to be connected through the elastic band 21. This effectively reduces the instability caused by dust and humid air in the connection cover 20. Thus, the use of a shut-off valve for a refrigeration system is completed.

[0038] It should be noted that this utility model is a shut-off valve for a refrigeration system. All components are general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components, which refer to power components, electrical components, and the matching monitoring computer and power supply, are connected by wires. The specific connection method should refer to the working principle above and complete the electrical connection in the order of operation between each electrical component. The detailed connection method is a well-known technology in the field.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shut-off valve for a refrigeration system, comprising a shut-off valve body (1) for a refrigeration system, characterized in that: The refrigeration system shut-off valve body (1) has a first channel (2) at one end and a second channel (3) at the top. The second channel (3) has a connecting port (5) connected to the bottom of the refrigeration system shut-off valve body (1) below it. The refrigeration system shut-off valve body (1) has a connecting port (4) at the end away from the first channel (2). The outer walls of the first channel (2) and the second channel (3) are both equipped with mounting rings (10). The mounting rings (10) are both equipped with mounting cavities (11) on both sides through connecting blocks. The mounting cavities (11) are movably connected through movable blocks (15). The movable blocks (15) are installed on the outer walls of the connecting ring (16) on both sides. The inner wall of the connecting ring (16) is equipped with a sealing ball (17).

2. A shut-off valve for a refrigeration system according to claim 1, characterized in that: The bottom end of the connecting port (5) is threaded with a dustproof sealing block (6).

3. A shut-off valve for a refrigeration system according to claim 1, characterized in that: One end of the connection port (4) is internally threaded with a valve stem (7), and one end of the valve stem (7) abuts against two limit blocks (8).

4. A shut-off valve for a refrigeration system according to claim 3, characterized in that: One end of the limiting block (8) is equipped with a snap-fit ​​block (9), and the snap-fit ​​block (9) is made of magnetic material. The snap-fit ​​block (9) snaps into the inside of the snap-fit ​​groove, and the snap-fit ​​groove is symmetrically opened on the inner side wall of the connection port (4). The inside of the snap-fit ​​groove is inlaid with a magnetic absorbing piece, and one end of the magnetic absorbing piece is magnetically attracted to one end of the snap-fit ​​block (9).

5. A shut-off valve for a refrigeration system according to claim 1, characterized in that: Flexible sheets (12) are symmetrically installed inside the mounting cavity (11), and first limiting protrusions (13) are installed at equal intervals on the outer side walls of the flexible sheets (12). The outer side walls of the first limiting protrusions (13) abut against the outer side walls of the second limiting protrusions (14), and the second limiting protrusions (14) are symmetrically installed at equal intervals on both sides of the movable block (15).

6. A shut-off valve for a refrigeration system according to claim 1, characterized in that: The inner wall of the sealing balloon (17) is equipped with a silicone sealing gasket (18), and the inner wall of the silicone sealing gasket (18) abuts against the outer wall of the first channel (2) and the second channel (3).

7. A shut-off valve for a refrigeration system according to claim 1, characterized in that: One end of each connecting ring (16) is fitted with a mounting plate (19) by bolts. The mounting plate (19) is a hollow structure, and a connecting cover (20) is installed at one end of the mounting plate (19). An elastic band (21) is installed at the other end of the connecting cover (20).

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