Divided-flow type knife valve

Abstract

A flow dividing type knife valve comprises a valve body and a knife switch, a conveying channel is formed in the valve body in a penetrating mode, a knife switch channel penetrating through one side of the valve body is formed in the side wall of the conveying channel, the knife switch is movably arranged in the knife switch channel, and the front end of the knife switch can penetrate through the knife switch channel to block the conveying channel and divide the conveying channel into a front-section conveying channel and a rear-section conveying channel. At least one flow dividing channel is further formed in the side wall of the conveying channel, one end of the flow dividing channel communicates with one of the front-section conveying channel and the rear-section conveying channel, and the other end of the flow dividing channel is arranged on the outer side of the valve body. According to the utility model, the shunting channels are arranged on the conveying channel, so that only the branch pipelines need to be connected to the corresponding shunting channels when the shunting branches need to be arranged, the number of interfaces on the large-diameter pipeline is reduced, and the connection stability is improved; and meanwhile, branch valves can be arranged on the connectors of the shunting channels, so that the on-off of the large-diameter pipeline and the shunting branch pipelines can be controlled in a centralized manner.

Description

Technical Field

[0001] The utility model relates to the technical field of knife valves, in particular to a diverter type knife valve. Background Art

[0002] Knife valve, also known as knife-type gate valve, is a high-performance industrial valve. Its main feature is the unique knife-type gate design, which can accurately cut the fluid, effectively avoid the accumulation and retention of the medium in the valve cavity, and ensure the smooth opening and closing and efficient operation of the valve. It is widely used in industrial impurity removal systems.

[0003] In industrial impurity removal systems, self-cleaning pipelines and maintenance pipelines are generally installed. However, since the impurity removal pipelines are large-diameter pipelines, it is extremely difficult to install diversion branches on them, and installing the interfaces of the diversion branches will cause instability in the impurity removal pipeline connections.

[0004] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a diverter knife valve to solve the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solution of the present invention and facilitating the understanding of those skilled in the art. It cannot be assumed that the above contents are well known to those skilled in the art simply because they are explained in the background technology of the present invention. Utility Model Content

[0006] In order to overcome the deficiencies in the above-mentioned prior art, the purpose of the present invention is to disclose a diverter knife valve for solving the problem of difficulty in opening diverter branches in large diameter pipelines and the problem of unstable connection of large diameter pipeline interfaces caused by opening diverter branches.

[0007] The utility model discloses a diverter type knife valve, comprising a valve body and a gate knife, a delivery channel is provided through the valve body, a gate knife channel which passes through one side of the valve body is opened at the side wall of the delivery channel, the gate knife is movably arranged in the gate knife channel, the front end of the gate knife can pass through the gate knife channel to block the delivery channel and separate it into a front delivery channel and a rear delivery channel, at least one diverter channel is further opened at the side wall of the delivery channel, one end of the diverter channel is communicated with one of the front delivery channel and the rear delivery channel, the other end of the diverter channel is arranged on the outside of the valve body, and a branch flow is separated from the delivery channel through the diverter channel.

[0008] Preferred technical solution: The diverter knife valve also includes a driving device, which is arranged on the outside of the valve body corresponding to the gate knife channel. The moving end of the driving device is connected to the rear end of the gate knife to drive the gate knife to open and close the conveying channel.

[0009] Preferred technical solution: A connector is provided at one end of the diversion channel located outside the valve body to facilitate connection with an external pipeline.

[0010] Preferred technical solution: A branch valve is provided on the connector to facilitate the control of the on-off of the diversion channel.

[0011] The preferred technical solution is that the number of diversion channels is two or more, so that the number of tributaries is two or more.

[0012] The preferred technical solution is that one end of the multi-component flow channel is completely connected to the front section delivery channel or one end of the multi-component flow channel is completely connected to the rear section delivery channel, so that the branch flow separated by the diversion channel is only connected to one end of the knife valve pipeline.

[0013] The preferred technical solution is that one end of the multi-component diversion channel is respectively connected to one of the front section delivery channel and the rear section delivery channel, so that the branches separated by the diversion channel are respectively connected to the pipelines at both ends of the knife valve.

[0014] Preferred technical solution: Sealing flanges are provided at both ends of the conveying channel to facilitate docking with external pipelines.

[0015] Due to the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0016] The utility model discloses a diverter knife valve, which arranges diverter channels on the conveying channels on both sides of the gate knife. When a diverter branch is needed, it is only necessary to connect the branch pipe to the corresponding diverter channel, thereby reducing the number of interfaces on the large-diameter pipe and improving the stability of the connection of the large-diameter pipe. At the same time, a branch valve can be arranged on the connecting head of the diverter channel to centrally control the on-off of the large-diameter pipe and the diverter branch pipe, thereby improving convenience in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a structural diagram of a diverter-type knife valve of the utility model;

[0019] Figure 2 This is a top view of a diverter-type knife valve of the utility model;

[0020] Figure 3 for Figure 2 A cross-sectional view taken along line AA;

[0021] Figure 4 This is a structural diagram of the valve body in Example 2;

[0022] Figure 5 This is a structural diagram of the valve body in Example 3.

[0023] In the above drawings, 1. valve body; 11. delivery channel; 11a. front delivery channel; 11b. rear delivery channel; 12. knife gate channel; 13. diversion channel; 13a. connector; 13b. branch valve; 14. sealing flange; 2. drive device; 3. knife gate. DETAILED DESCRIPTION

[0024] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate to describe the embodiments of the present application here. In addition, the terms "including" and "having" and their synonyms are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0027] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0028] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," "sleeved," and "fitted" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or internal communication between two devices, elements, or components. For another example, "fitted" can mean complete or partial contact. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] Example 1:

[0031] like Figure 1 As shown, the utility model discloses a diverter knife valve, including a valve body 1, a drive device 2 and a gate knife 3. The main components of the utility model are described in detail below:

[0032] like Figure 1 、 Figure 2 and Figure 3 As shown, a delivery channel 11 is provided through the valve body 1, and a knife gate channel 12 is provided on the side wall of the delivery channel 11, which passes through one side of the valve body 1. The delivery channel 11 can be divided into a front delivery channel 11a and a rear delivery channel 11b by the knife gate 3. A diversion channel 13 is also provided on the side wall of the delivery channel 11, and one end of the diversion channel 13 is connected to one of the front delivery channel 11a and the rear delivery channel 11b, and the other end of the diversion channel 13 is arranged on the outside of the valve body 1.

[0033] like Figure 1 、 Figure 2 and Figure 3 As shown, the drive device 2 is provided on the outside of the valve body 1 corresponding to the gate knife channel 12, and the moving end of the drive device 2 is connected to the rear end of the gate knife 3. It should be noted that in this embodiment, the gate knife 3 is controlled by the drive device 2, but in other embodiments, the gate knife 3 can also be directly controlled manually.

[0034] like Figure 1 、 Figure 2 and Figure 3 As shown, the knife gate 3 is movably arranged in the knife gate channel 12. The knife gate 3 is connected to the moving end of the driving device 2. Driven by the driving device 2, it can pass through the knife gate channel 12 to block the conveying channel 11 and separate it into the front conveying channel 11a and the rear conveying channel 11b.

[0035] refer to Figure 1 、 Figure 2 and Figure 3 As shown, the use method and principle of the utility model are as follows:

[0036] Connect the pipe of the external shunt branch to the end of the shunt channel 13 located outside the valve body 1;

[0037] When the delivery channel 11 needs to be used, the control driving device 2 drives the gate knife 3 to move along the gate knife channel 12 to the side away from the delivery channel 11, so that the delivery channel 11 is opened, and the switch of the external shunt branch is closed, so that the fluid is delivered along the delivery channel 11;

[0038] When the shunt branch is needed, the control driving device 2 drives the gate knife 3 to move along the gate knife channel 12 to the side close to the conveying channel 11, so that the conveying channel 11 is blocked and divided into the front conveying channel 11a and the rear conveying channel 11b, and the switch of the external shunt branch is turned on, so that the shunt branch is connected to one of the front conveying channel 11a and the rear conveying channel 11b, so that the fluid is conveyed along the shunt branch and the corresponding front conveying channel 11a and the rear conveying channel 11b.

[0039] When it is necessary to use the conveying channel 11 and the diversion branch at the same time, the control drive device 2 drives the gate knife 3 to move along the gate knife channel 12 to the side away from the conveying channel 11, so that the conveying channel 11 is opened, and the switch of the external diversion branch is opened, so that the fluid is conveyed along the conveying channel 11 and the diversion branch at the same time.

[0040] Furthermore, in order to facilitate the connection between the external shunt branch and the shunt channel 13 , a connector 13 a is provided at one end of the shunt channel 13 located outside the valve body 1 .

[0041] Furthermore, in order to facilitate the control of the opening and closing of the diversion channel 13, a branch valve 13b is provided on the connector 13a.

[0042] Furthermore, in order to facilitate the connection between the delivery channel 11 and the external pipeline, sealing flanges 14 are provided at both ends of the delivery channel 11. The sealing flanges 14 are used to connect the delivery channel 11 to the external pipeline, which not only facilitates the connection but also improves the stability and sealing of the connection end.

[0043] Example 2:

[0044] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the difference between this embodiment and the first embodiment is that there are two groups of diversion channels 13, and one end of the two groups of diversion channels 13 are all connected to the front section delivery channel 11a, so that the front section delivery channel 11a can connect two diversion branches.

[0045] Example 3:

[0046] like Figure 1 、 Figure 2 、 Figure 3 and Figure 5 As shown, the difference between this embodiment and the first embodiment is that the number of the diversion channels 13 is two groups, and one end of the two groups of diversion channels 13 is respectively connected to the front section conveying channel 11a and the rear section conveying channel 11b, so that the front section conveying channel 11a and the rear section conveying channel 11b can be connected to the diversion branch respectively.

[0047] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A diverter knife valve, comprising a valve body (1) and a gate knife (3), wherein a delivery channel (11) is provided through the valve body (1), a gate knife channel (12) is provided on the side wall of the delivery channel (11) and passes through one side of the valve body (1), and the gate knife (3) is movably arranged in the gate knife channel (12), characterized in that: The front end of the gate knife (3) can pass through the gate knife channel (12) to block the conveying channel (11) and separate it into a front conveying channel (11a) and a rear conveying channel (11b). At least one diversion channel (13) is also provided on the side wall of the conveying channel (11). One end of the diversion channel (13) is connected to one of the front conveying channel (11a) and the rear conveying channel (11b), and the other end of the diversion channel (13) is arranged on the outside of the valve body (1).

2. A diverter knife valve according to claim 1, characterized in that: The diverter knife valve further comprises a driving device (2), wherein the driving device (2) is arranged on the outside of the valve body (1) corresponding to the gate knife channel (12), and the moving end of the driving device (2) is connected to the rear end of the gate knife (3).

3. The diverter knife valve according to claim 1, characterized in that: A connector (13a) is provided at one end of the diversion channel (13) located outside the valve body (1).

4. A diverter knife valve according to claim 3, characterized in that: The connecting head (13a) is provided with a branch valve (13b).

5. The diverter knife valve according to claim 1, characterized in that: The number of the diversion channels (13) is two or more.

6. The diverter knife valve according to claim 5, characterized in that: One end of each of the plurality of groups of diverting channels (13) is connected to the front section conveying channel (11a), or one end of each of the plurality of groups of diverting channels (13) is connected to the rear section conveying channel (11b).

7. The diverter knife valve according to claim 5, characterized in that: One end of each of the plurality of groups of diversion channels (13) is respectively connected to one of the front section conveying channel (11a) and the rear section conveying channel (11b).

8. The diverter knife valve according to claim 1, characterized in that: Sealing flanges (14) are provided at both ends of the conveying channel (11).

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