Rotary valve with auxiliary sealing structure

Abstract

The utility model relates to the field of rotary valves, in particular to a rotary valve with an auxiliary sealing structure, which comprises a shell, a main shaft sealing element and a tensioning component. The rotating pipe comprises an inner pipe and an outer pipe which are used for containing gases or liquids with different temperatures, and an auxiliary sealing assembly; the rotating pipe is sleeved with the shell and a cavity of the auxiliary sealing assembly, and the auxiliary sealing assembly is suitable for sealing the bent position of the rotating pipe. One end of the shell is hermetically connected with one end of the auxiliary sealing assembly, and the inner cavity of the shell close to the auxiliary sealing assembly and the rotating pipe is recessed to form a sealing cavity; the auxiliary sealing assembly comprises a main sealing piece and a secondary sealing piece, the main sealing piece is located in the sealing cavity, and the secondary sealing piece makes contact with the rotating pipe and the auxiliary sealing assembly. According to the rotary valve with the auxiliary sealing structure, gas or liquid between the inner pipe and the outer pipe is prevented from being exchanged, and the efficiency of heating and cooling equipment through the rotary pipe is improved.

Description

Technical Field

[0001] This utility model relates to the field of hot and cold rotary valves, specifically to rotary valves with auxiliary sealing structures. Background Technology

[0002] A hot and cold rotary tube is an industrial pipe fitting used for heating or cooling equipment. In use, gas or liquid is passed into the equipment through the inner tube of the hot and cold rotary tube. After the gas or liquid comes into contact with the equipment, its temperature changes and it is discharged from the outer tube.

[0003] The commonly used hot and cold rotary valves have poor sealing between the inner and outer tubes, which leads to technical problems such as gas or liquid exchange between the inner and outer tubes. There is an urgent need to design a new rotary valve with an auxiliary sealing structure.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0005] The purpose of this invention is to provide a rotary valve with an auxiliary sealing structure to solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A rotary valve with an auxiliary sealing structure, including:

[0008] The housing includes a spindle seal and a tensioning assembly;

[0009] A rotating tube, comprising an inner tube and an outer tube for holding gases or liquids at different temperatures;

[0010] Auxiliary sealing components;

[0011] The rotating tube is fitted inside the cavity of the outer shell and the auxiliary sealing assembly, the auxiliary sealing assembly being adapted to seal the bends of the rotating tube; one end of the outer shell and one end of the auxiliary sealing assembly are sealed together.

[0012] In one alternative embodiment, the inner cavity of the housing is recessed to form a sealing cavity near the auxiliary sealing assembly and the rotating tube;

[0013] The auxiliary sealing assembly includes a main seal and a secondary seal. The main seal is located inside the sealing cavity, and the secondary seal is in contact with the rotating tube and the auxiliary sealing assembly.

[0014] In one optional embodiment, the main seal is annular, and the inner cavity of the main seal contacts the end of the outer wall of the outer tube;

[0015] The side of the main seal contacts the tensioning assembly, so that the tensioning assembly drives the main seal to contact the side wall of the sealing cavity.

[0016] In one alternative embodiment, the tensioning assembly is a spring assembly, and the two ends of the tensioning assembly contact the side of the main seal and the side wall of the sealing cavity, respectively.

[0017] In one alternative embodiment, the primary seal is located between the secondary seal and the tensioning assembly;

[0018] The auxiliary sealing assembly is provided with an installation cavity for placing the secondary seal.

[0019] In one alternative embodiment, the secondary seal is annular;

[0020] The inner wall of the secondary seal contacts the end of the outer wall of the inner tube.

[0021] In one optional embodiment, the secondary seal is made of carbon fiber modified PTFE;

[0022] The outer wall of the secondary seal contacts the wall of the mounting cavity.

[0023] Secondly, embodiments of this disclosure also provide a rotary valve with an auxiliary sealing structure, comprising:

[0024] The housing includes a spindle seal and a tensioning assembly;

[0025] A rotating tube, comprising an inner tube and an outer tube for holding gases or liquids at different temperatures.

[0026] Auxiliary sealing components;

[0027] The rotating tube is fitted into the cavity of the outer shell and the auxiliary sealing assembly, the auxiliary sealing assembly being adapted to seal the bends in the rotating tube; one end of the outer shell and one end of the auxiliary sealing assembly are sealingly connected; wherein

[0028] The outer casing is provided with an air inlet pipe that communicates with the outer tube;

[0029] An air outlet pipe is provided on the inner tube.

[0030] In one alternative embodiment, the inner cavity of the housing is recessed to form a sealing cavity near the auxiliary sealing assembly and the rotating tube;

[0031] The auxiliary sealing assembly includes a main seal and a secondary seal. The main seal is located inside the sealing cavity, and the secondary seal is in contact with the rotating tube and the auxiliary sealing assembly.

[0032] The beneficial effects of this utility model are as follows: It provides a rotary valve with an auxiliary sealing structure. By using the outer shell, the rotary tube and the auxiliary sealing assembly in cooperation, a rotary valve with an auxiliary sealing structure is made to replace the rotary tube with poor sealing between the outer tube and the inner tube. This achieves the effect of avoiding the exchange of liquid or gas between the outer tube and the inner tube during the use of the rotary tube, thus preventing the exchange of gas or liquid between the inner tube and the outer tube and improving the efficiency of the rotary tube heating and cooling equipment. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of a rotary valve with an auxiliary sealing structure provided in an embodiment of this disclosure.

[0035] In the diagram: 1. Housing; 11. Spindle seal; 12. Tensioning assembly; 13. Sealing cavity; 14. Air inlet pipe;

[0036] Rotary tube; 21. Inner tube; 22. Outer tube;

[0037] 31. Auxiliary sealing assembly; 32. Main seal; 33. Secondary seal; 34. Mounting cavity; 35. Vent pipe. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0040] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0041] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of a feature, step, operation, element, and / or component, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof.

[0042] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0045] refer to Figure 1At least one embodiment provides a rotary valve with an auxiliary sealing structure, comprising: a housing 1, which includes a main shaft seal 11 and a tensioning assembly 12, the main shaft seal 11 serving to seal the outer tube 22, and the tensioning assembly 12 serving to tension the main seal 31 to keep it in contact with the housing of the auxiliary sealing assembly 3; a rotary tube 2, which includes an inner tube 21 and an outer tube 22 for holding gases or liquids at different temperatures, and is connected to the device for heating or cooling the device; an auxiliary sealing assembly 3 serving to seal and prevent gas or liquid exchange between the inner tube 21 and the outer tube 22; the rotary tube 2 is fitted into the cavity of the housing 1 and the auxiliary sealing assembly 3 to ensure that the rotary tube 2 can rotate within the cavity of both, and the auxiliary sealing assembly 3 is adapted to seal the bends of the rotary tube 2 to improve the sealing performance at these bends; one end of the housing 1 and one end of the auxiliary sealing assembly 3 are sealed together.

[0046] In some embodiments, a recessed sealing cavity 13 is formed in the inner cavity of the outer shell 1 near the auxiliary sealing assembly 3 and the rotating tube 2, which serves as the placement position of the main seal 31 and ensures that the main seal 31 can be partially displaced within the sealing cavity 13; the auxiliary sealing assembly 3 includes a main seal 31 and a secondary seal 32, the main seal 31 is located in the sealing cavity 13, and the secondary seal 32 is in contact with the rotating tube 2 and the auxiliary sealing assembly 3.

[0047] In some embodiments, the main seal 31 is annular and is designed to fit the shape of the rotating tube 2. The inner cavity of the main seal 31 contacts the end of the outer wall of the outer tube 22 to increase the sealing performance there. The side of the main seal 31 contacts the tensioning assembly 12 so that the tensioning assembly 12 drives the main seal 31 to contact the side wall of the sealing cavity 13 to increase the sealing performance there.

[0048] In some embodiments, the main seal 31 is made of one or more of antimony alloy graphite, tetrafluoroethylene synthetic graphite and resin graphite to achieve the desired effect; the tensioning assembly 12 is a spring assembly, and the two ends of the tensioning assembly 12 respectively contact the side of the main seal 31 and the side wall of the sealing cavity 13 to provide the force for the main seal 31 to contact the end of the outer tube 22.

[0049] In some embodiments, the main seal 31 is located between the secondary seal 32 and the tensioning assembly 12; the auxiliary sealing assembly 3 is provided with a mounting cavity 33 for placing the secondary seal 32, which provides the mounting position for the secondary seal 32.

[0050] In some embodiments, the secondary seal 32 is annular; the inner wall of the secondary seal 32 contacts the end of the outer wall of the inner tube 21 for sealing.

[0051] In some embodiments, the secondary seal 32 is made of carbon fiber modified PTFE; the outer wall of the secondary seal 32 contacts the wall of the mounting cavity 33 for sealing the cavity.

[0052] In some embodiments, a rotary valve with an auxiliary sealing structure includes: a housing 1, comprising a main shaft seal 11 and a tensioning assembly 12, wherein the main shaft seal 11 seals the outer tube 22, and the tensioning assembly 12 tensions the main seal 31 to maintain contact with the housing of the auxiliary sealing assembly 3; a rotary tube 2, comprising an inner tube 21 and an outer tube 22 for holding gases or liquids at different temperatures, for communicating with equipment and for heating or cooling the equipment; and an auxiliary sealing assembly 3 for providing a seal to prevent gas or liquid exchange between the inner tube 21 and the outer tube 22. The rotating tube 2 is fitted into the cavity of the outer shell 1 and the auxiliary sealing assembly 3 to ensure that the rotating tube 2 can rotate within the cavity of both. The auxiliary sealing assembly 3 is adapted to seal the bend of the rotating tube 2 to improve the sealing performance at that point. One end of the outer shell 1 and one end of the auxiliary sealing assembly 3 are sealed together. The outer shell 1 is provided with an air inlet pipe 14 that communicates with the outer tube 22 for introducing gas or liquid. The inner tube 21 is provided with an air outlet pipe 34 for discharging the gas or liquid after heat exchange. F1 is the flow direction of the gas or liquid in the inner tube 21 and the outer tube 22.

[0053] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] While this patent document contains numerous details, it should not be construed as limiting any utility model or the scope of the claims, but rather as a description of features of a particular embodiment of a particular utility model. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various functions described in the context of a single embodiment may also be implemented individually in multiple embodiments, or in any suitable sub-combination. Furthermore, although the foregoing features may be described as functioning in certain combinations, or even initially claimed to be so, in some cases one or more features from a combination of claims may be removed from the combination, and a combination of claims may refer to a sub-combination or a variation of a sub-combination.

[0056] Similarly, although the operations are described in a specific order in the accompanying drawings, this should not be construed as requiring the specific order or sequence shown to perform such operations, or all the described operations, in order to obtain the desired result. Furthermore, the separation of various system components in the embodiments of this patent document should not be construed as requiring such separation in all embodiments.

[0057] Only some implementations and examples are described; other implementations, enhancements, and variations can be made based on the content described and illustrated in this patent document.

[0058] While several embodiments are provided in this disclosure, it should be understood that the disclosed systems and methods may be embodied in many other specific forms without departing from the spirit or scope of this disclosure. The present examples are intended to be illustrative rather than restrictive and are not limited to the details given. For example, various elements or components may be combined or integrated into another system, or certain features may be omitted or not implemented.

Claims

1. A rotary valve with an auxiliary sealing structure, characterized in that, include: The housing (1) includes a spindle seal (11) and a tensioning assembly (12). Rotating tube (2), which includes an inner tube (21) and an outer tube (22) for holding gases or liquids at different temperatures. Auxiliary sealing component (3); The rotating tube (2) is fitted inside the cavity of the outer shell (1) and the auxiliary sealing assembly (3), and the auxiliary sealing assembly (3) is adapted to seal the bend of the rotating tube (2); one end of the outer shell (1) and one end of the auxiliary sealing assembly (3) are sealed together.

2. The rotary valve with auxiliary sealing structure according to claim 1, characterized in that: The inner cavity of the outer shell (1) is recessed to form a sealing cavity (13) near the auxiliary sealing assembly (3) and the rotating tube (2). The auxiliary sealing assembly (3) includes a main seal (31) and a secondary seal (32). The main seal (31) is located in the sealing cavity (13), and the secondary seal (32) is in contact with the rotating tube (2) and the auxiliary sealing assembly (3).

3. The rotary valve with auxiliary sealing structure according to claim 2, characterized in that: The main seal (31) is annular, and the inner cavity of the main seal (31) contacts the end of the outer wall of the outer tube (22); The side of the main seal (31) contacts the tensioning assembly (12) so that the tensioning assembly (12) drives the main seal (31) to contact the side wall of the sealing cavity (13).

4. The rotary valve with auxiliary sealing structure according to claim 3, characterized in that: The tensioning assembly (12) is a spring assembly, and the two ends of the tensioning assembly (12) respectively contact the side of the main seal (31) and the side wall of the sealing cavity (13).

5. The rotary valve with auxiliary sealing structure according to claim 2, characterized in that: The main seal (31) is located between the secondary seal (32) and the tensioning assembly (12); The auxiliary sealing assembly (3) is provided with an installation cavity (33) for placing the secondary seal (32).

6. The rotary valve with auxiliary sealing structure according to claim 5, characterized in that: The secondary seal (32) is annular; The inner wall of the secondary seal (32) contacts the end of the outer wall of the inner tube (21).

7. The rotary valve with auxiliary sealing structure according to claim 5, characterized in that: The material of the secondary seal (32) is carbon fiber modified PTFE; The outer wall of the secondary seal (32) contacts the wall of the mounting cavity (33).

8. A rotary valve with an auxiliary sealing structure, characterized in that, include: The housing (1) includes a spindle seal (11) and a tensioning assembly (12). Rotating tube (2), which includes an inner tube (21) and an outer tube (22) for holding gases or liquids at different temperatures. Auxiliary sealing component (3); The rotating tube (2) is fitted inside the cavity of the outer shell (1) and the auxiliary sealing assembly (3), the auxiliary sealing assembly (3) being adapted to seal the bends of the rotating tube (2); one end of the outer shell (1) and one end of the auxiliary sealing assembly (3) are sealed together; wherein An air inlet pipe (14) connected to the outer tube (22) is provided on the outer shell (1). An air outlet pipe (34) is provided on the inner tube (21).

9. The rotary valve with auxiliary sealing structure according to claim 8, characterized in that: The inner cavity of the outer shell (1) is recessed to form a sealing cavity (13) near the auxiliary sealing assembly (3) and the rotating tube (2). The auxiliary sealing assembly (3) includes a main seal (31) and a secondary seal (32). The main seal (31) is located in the sealing cavity (13), and the secondary seal (32) is in contact with the rotating tube (2) and the auxiliary sealing assembly (3).

Images