Air cylinder direct drive type rapid switching three-way valve

Abstract

The utility model discloses an air cylinder direct drive type rapid switching three-way valve which comprises a straight-through pipe, an inclined hole is formed in the straight-through pipe, an inclined pipe column is matched with the inclined hole and can be inserted into the inclined hole to be in sliding fit with the straight-through pipe, and the pushing end of an air cylinder rod is fixedly connected with one end of the inclined pipe column. The air cylinder and the straight-through pipe are fixedly arranged on the installation base. Under the condition that the device is used for non-liquid materials such as particle materials and does not need strong sealing, rapid switching of fluid paths is achieved through linear driving force of the air cylinder and sliding of the inclined pipe column in the straight-through pipe. Compared with a traditional motor driving or air cylinder indirect driving mode, a complex mechanical conversion mechanism is not needed, the overall structure is simplified, and the manufacturing cost and the maintenance difficulty are reduced. In addition, the three-way valve is high in switching speed, is directly driven by the air cylinder, does not need to be converted into rotating force, and is quicker in response.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control valves, in particular to a cylinder direct-driven fast-switching three-way valve. Background Art

[0002] A three-way valve is a valve with three ports and is commonly used to control the flow of fluid between three different paths.

[0003] The power for opening and closing of automatic three-way valves currently on the market usually comes from motors or cylinders. Motor-driven three-way valves usually use motors to drive the valve core to rotate to achieve the connection or closure of different ports.

[0004] Although this method can achieve relatively precise control, the rotating mechanism is relatively complex. Especially when switching between multiple different positions is required, the mechanical structure becomes more complicated, increasing manufacturing costs and maintenance difficulties.

[0005] Another common power source is a cylinder, but the existing cylinder-driven three-way valve does not directly use the thrust of the cylinder to control the opening and closing of the valve.

[0006] Normally, the linear motion of the cylinder needs to be converted into the rotary motion of the valve core through a mechanical conversion mechanism to control the opening and closing of the valve. This conversion not only increases the complexity of the mechanical structure, but also fails to fully utilize the linear motion characteristics of the cylinder itself.

[0007] It is worth noting that the existing three-way valve adopts the above-mentioned relatively complex design mainly to improve the sealing effect to ensure that the fluid will not leak during the transmission process. However, in some application scenarios, such as the transmission of non-liquids such as granular materials, the requirements for sealing may not be so strict. In this case, the overly complex structure is not only of little use, but also increases the manufacturing cost.

[0008] Therefore, under the premise of ensuring basic functions, the technical problem to be solved by the present invention is to simplify the structural design of the three-way valve and realize direct, fast and easy switching of the three-way valve for specific scenarios such as non-liquid material transmission. Utility Model Content

[0009] The technical problem solved by the utility model is to provide a cylinder direct-driven quick-switching three-way valve in response to the defects existing in the above-mentioned prior art, so as to solve the problems of the existing three-way valve mentioned in the above-mentioned background technology that the structure is complex, the switching speed is slow, and the linear driving force and position characteristics of the cylinder cannot be fully utilized.

[0010] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0011] A cylinder direct-driven fast-switching three-way valve comprises: a straight-through pipe, the straight-through pipe comprising a straight-through pipeline;

[0012] An inclined hole is provided on the straight pipe, the inclined hole penetrates one side of the straight pipe and the other side corresponding to the side, and penetrates the straight pipe;

[0013] An inclined pipe column is matched with the inclined hole and can be inserted into the inclined hole to slide with the straight pipeline, and one end of the inclined pipe column is a plugging end;

[0014] A cylinder, the push end of the cylinder rod of which is fixedly connected to one end of the inclined pipe column;

[0015] The cylinder and the straight-through pipe are respectively fixedly arranged on the mounting base;

[0016] The inclined pipe column is provided with a first straight hole and a second through hole, the first straight hole and the second through hole respectively penetrate one side of the inclined pipe column and the other side corresponding to the one side, and a straight valve core is fixedly arranged in the first straight hole;

[0017] A bypass valve core is fixedly arranged in the second through hole;

[0018] Among them, the pushing of the cylinder rod can make the inclined tube column be in the first position or the second position; when the inclined tube column is in the first position, the inclined tube column drives the straight-through valve core to be located in the straight-through pipeline, and at this time, one end and the other end of the straight-through pipeline are connected through the straight-through valve core; when the inclined tube column is in the second position, the inclined tube column drives the bypass valve core to be located in the straight-through pipeline, and at this time, one end of the straight-through pipeline and the other end of the inclined tube column are respectively connected to the bypass valve core.

[0019] As a further solution of the utility model, the mounting seat is provided with a positioning groove, and the cylinder and the straight-through pipe are respectively fixedly arranged on the mounting seat through the positioning groove.

[0020] As a further solution of the utility model, a connecting piece is provided between the pushing end of the cylinder rod and the inclined pipe column, and the connecting piece enables a detachable connection between the cylinder rod and the inclined pipe column.

[0021] As a further solution of the utility model, both ends of the straight-through pipeline are respectively provided with first connecting flanges for facilitating connection with other pipelines.

[0022] As a further solution of the utility model, the other end of the inclined pipe column is provided with a second connecting flange for easy connection with other pipelines.

[0023] Compared with the prior art, the utility model has the following beneficial effects: when used for non-liquid materials such as granular materials, where strong sealing is not required, the linear driving force of the cylinder is utilized, and the sliding of the inclined pipe column in the straight pipe is used to achieve rapid switching of the fluid path. Compared with the traditional motor drive or cylinder indirect drive method, there is no need for a complex mechanical conversion mechanism, which simplifies the overall structure, reduces manufacturing costs and maintenance difficulties. In addition, the three-way valve has a fast switching speed, is directly driven by the cylinder, does not need to be converted into rotational force, and responds more quickly.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 This is a schematic diagram of the structural principle of the bypass feeding of the utility model.

[0027] Figure 2 It is a schematic diagram of the structural principle of the straight-through feeding of the utility model.

[0028] Figure 3 It is a structural diagram of straight-through feeding when the cylinder rod is at the end position of pushing.

[0029] Figure 4 It is a structural diagram of bypass feeding when the cylinder rod is in the original position.

[0030] Figure 5 This is a schematic diagram of the structure of a straight-through pipe.

[0031] The reference numerals and names in the figures are as follows:

[0032] A straight pipe 1, an inclined hole 2, a cylinder 3, a mounting seat 4, a straight hole 5, an inclined pipe column 6, a straight valve core 7, a bypass valve core 8, a first connecting flange 9, a second connecting flange 10, a cylinder rod 11 and a second through hole 12. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1 —4. In an embodiment of the utility model, a cylinder direct-driven fast-switching three-way valve comprises: a straight-through pipe 1, the straight-through pipe 1 comprising a straight-through pipeline; an inclined hole 2 is provided on the straight-through pipe 1, the inclined hole 2 penetrates one side of the straight-through pipeline and the other side corresponding to the side, and penetrates the straight-through pipeline;

[0035] An inclined pipe column 6 is matched with the inclined hole 2 and can be inserted into the inclined hole 2 to slide with the straight pipe, and one end of the inclined pipe column 6 is a blocking end; a cylinder 3, the push end of the cylinder rod 11 of which is fixedly connected to one end of the inclined pipe column 6; the cylinder 3 and the straight pipe 1 are respectively fixedly arranged on the mounting seat 4;

[0036] The inclined tube column 6 is provided with a first straight hole 5 and a second through hole 12, which respectively penetrate one side of the inclined tube column 6 and the other side corresponding to the one side, and a straight valve core 7 is fixedly arranged in the first straight hole 5; a bypass valve core 8 is fixedly arranged in the second straight hole 12; at the same time, the straight valve core 7 and the bypass valve core 8 are as shown in the accompanying drawings, and the direction switching of the fluid can be realized by the principle of blocking, which are all extended implementation methods that ordinary technicians in this field can know.

[0037] Among them, the pushing energy of the cylinder rod 11 enables the inclined tube column 6 to be in the first position or the second position; when the inclined tube column 6 is in the first position, the inclined tube column 6 drives the straight-through valve core 7 to be located in the straight-through pipeline, and at this time, one end and the other end of the straight-through pipeline are connected through the straight-through valve core 7; when the inclined tube column 6 is in the second position, the inclined tube column 6 drives the bypass valve core 8 to be located in the straight-through pipeline, and at this time, one end of the straight-through pipeline and the other end of the inclined tube column 6 are respectively connected to the bypass valve core 8.

[0038] The mounting seat 4 is provided with a positioning groove, and the cylinder 3 and the straight pipe 1 are fixedly arranged on the mounting seat 4 through the positioning grooves. A connector is provided between the push end of the cylinder rod 11 and the inclined pipe column 6, and the connector enables the cylinder rod 11 and the inclined pipe column 6 to be detachably connected. Both ends of the straight pipe are respectively provided with a first connecting flange 9 for easy connection with other pipes. The other end of the inclined pipe column 6 is provided with a second connecting flange 10 for easy connection with other pipes.

[0039] Embodiment 1:

[0040] This embodiment provides a specific application of a cylinder direct-driven fast-switching three-way valve.

[0041] The three-way valve includes a straight pipe 1, on which an inclined hole 2 is provided, and an inclined tube column 6 matched with the inclined hole 2. The inclined tube column 6 can slide in the inclined hole 2 under the drive of the cylinder 3, so as to realize the switching of two different fluid paths. Specifically, when the cylinder rod 11 pushes the inclined tube column 6 to the first position, one end and the other end of the straight pipe are connected through the straight valve core 7, and the fluid can flow freely in the straight pipe. When it is necessary to switch the fluid path to another pipeline, the cylinder rod 11 pushes the inclined tube column 6 to the second position, at which time one end of the straight pipe and the other end of the inclined tube column 6 are respectively connected to the bypass valve core 8, and the fluid is guided to another pipeline; the three-way valve is switched by utilizing the two states of the original position and the pushing position of the cylinder rod 11.

[0042] In practical applications, the cylinder direct-driven fast-switching three-way valve is installed at the key node of the fluid control system. Since it directly uses the linear driving force of the cylinder 3 for fast switching, no complex mechanical conversion mechanism is required, thus simplifying the overall mechanical structure, reducing manufacturing costs and maintenance difficulties.

[0043] In addition, the three-way valve has a fast switching speed and quick response, which can meet the requirements of high efficiency and high reliability in industrial fluid control systems. At the same time, its structure is simple and compact, which is easy to install and debug, further improving the overall performance of the system.

[0044] Specifically, on a chemical production line, the cylinder direct-driven fast-switching three-way valve is used to control the delivery paths of two different raw materials. When the production line needs to switch raw materials, the control system sends a command to the cylinder 3, and the cylinder rod 11 quickly pushes the inclined pipe column 6 to switch positions, thereby realizing the rapid replacement of the raw material path. This process not only improves production efficiency, but also avoids production accidents caused by untimely raw material switching.

[0045] Therefore, when the utility model is used for non-liquid materials such as granular materials, and strong sealing is not required, the linear driving force of the cylinder can be used to achieve rapid switching of the fluid path through the sliding of the inclined pipe column in the straight pipe. Compared with the traditional motor drive or cylinder indirect drive method, there is no need for a complex mechanical conversion mechanism, which simplifies the overall structure, reduces manufacturing costs and maintenance difficulties. In addition, the three-way valve has a fast switching speed, is directly driven by the cylinder, does not need to be converted into rotational force, and responds more quickly.

[0046] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A cylinder direct-driven fast-switching three-way valve, characterized in that: include: a straight-through pipe, the straight-through pipe comprising a straight-through pipe; An inclined hole is provided on the straight pipe, the inclined hole penetrates one side of the straight pipe and the other side corresponding to the side, and penetrates the straight pipe; An inclined pipe column is matched with the inclined hole and can be inserted into the inclined hole to slide with the straight pipeline, and one end of the inclined pipe column is a plugging end; A cylinder, the push end of the cylinder rod of which is fixedly connected to one end of the inclined pipe column; The cylinder and the straight-through pipe are respectively fixedly arranged on the mounting base; The inclined pipe column is provided with a first straight hole and a second through hole, the first straight hole and the second through hole respectively penetrate one side of the inclined pipe column and the other side corresponding to the one side, and a straight valve core is fixedly arranged in the first straight hole; A bypass valve core is fixedly arranged in the second through hole; Among them, the pushing of the cylinder rod can make the inclined tube column be in the first position or the second position; when the inclined tube column is in the first position, the inclined tube column drives the straight-through valve core to be located in the straight-through pipeline, and at this time, one end and the other end of the straight-through pipeline are connected through the straight-through valve core; when the inclined tube column is in the second position, the inclined tube column drives the bypass valve core to be located in the straight-through pipeline, and at this time, one end of the straight-through pipeline and the other end of the inclined tube column are respectively connected to the bypass valve core.

2. A cylinder direct-driven fast-switching three-way valve according to claim 1, characterized in that: The mounting seat is provided with a positioning groove, and the cylinder and the straight-through pipe are respectively fixedly arranged on the mounting seat through the positioning groove.

3. A cylinder direct-driven fast-switching three-way valve according to claim 1, characterized in that: A connecting piece is provided between the pushing end of the cylinder rod and the inclined pipe column, and the connecting piece enables the cylinder rod and the inclined pipe column to be detachably connected.

4. A cylinder direct-driven fast-switching three-way valve according to claim 1, characterized in that: Both ends of the straight-through pipeline are respectively provided with first connecting flanges for facilitating connection with other pipelines.

5. The cylinder direct-driven fast-switching three-way valve according to claim 1, characterized in that: The other end of the inclined pipe column is provided with a second connecting flange for easy connection with other pipelines.

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