Valve assembly of hanging chain type stirring equipment

Abstract

The utility model discloses a valve assembly of hanging chain type stirring equipment, and belongs to the technical field of stirring equipment. The connecting ring is mounted on the side surface of a shell of the stirring equipment; the first end of the cylindrical body is connected to the connecting ring and located on the outer side of the shell, and the second end is connected with the valve; a channel communicated with the first end and the second end is arranged in the cylindrical body, the valve is provided with a valve head, and the valve head can move and block the channel in the opening and closing process of the valve. The connecting ring and the cylindrical body are installed on the side face of the shell, a certain spacing distance is formed between the valve and the shell, a hanging chain in the shell is prevented from being wound on the valve head, the channel is blocked through the valve head, sealing of the interior and the exterior of the shell is achieved, and in the using process, the valve head can move relative to the channel, which is equivalent to dredging of the channel; the opening and closing of the valve are not influenced by scabbing, so that the scabbing forming speed can be effectively reduced, the long-term stable operation requirement of the stirring equipment can be met, and safety accidents can be effectively prevented.

Description

Technical Field

[0001] The present application belongs to the technical field of mixing equipment, and in particular, relates to a valve assembly of a chain-type mixing equipment. Background Art

[0002] The mixing container is a device for mixing slurry evenly, and is used in many industries such as chemical, pharmaceutical, and food. The chain mixer, also known as the chain mixer, is a device that uses a chain transmission system to achieve the mixing function. The chain drives the mixing blades to rotate to make the materials mixed more evenly. In the process of producing aluminum hydroxide by the Bayer process, the solid content of the sodium aluminate solution is relatively high, and a chain mixing structure is often used as an effective measure to stir the materials. Due to the nature of the material in this mixing container, scars often form in the pipeline, tank wall and other areas. When the conventional valve is closed, the flow rate of the slurry in the area is greatly reduced, and the scar formation hinders the opening of the valve. At the same time, the valve plate will also grow scars when the valve is open, resulting in poor closure.

[0003] In order to solve the scarring problem, the existing technology considers using different valve structures, which can reduce the impact of scarring on valve sealing performance to a certain extent, but some valve structures will introduce new technical problems. For example, after long-term use, the stirring chain is prone to breakage, which can easily cause the chain to be entangled in the internal structure of the valve, thereby causing safety accidents. In order to avoid the entanglement of the chain, the stirring structure is usually changed, such as a blade stirring structure, but this type of stirring is very likely to cause scarring at the bottom of the tank, shortening the maintenance and cleaning cycle and increasing labor and maintenance costs. Therefore, there is currently no existing technology that can better solve the scarring problem without introducing new problems. Utility Model Content

[0004] The present application aims to at least solve the technical problem of scarring in chain-type stirring equipment to a certain extent. To this end, the present application provides a valve assembly for chain-type stirring equipment, which can effectively reduce the speed of scarring formation and prevent sinking accidents. It can meet the long-term stable operation requirements of the stirring equipment, effectively prevent the occurrence of safety accidents, effectively improve the container operation cycle, and reduce manual cleaning and maintenance costs without introducing new technical problems.

[0005] The embodiment of the present application provides a valve assembly of a chain-type stirring device, which includes:

[0006] valve;

[0007] A connecting ring, used for mounting on the side of the housing of the mixing device;

[0008] The first end of the cylindrical body is connected to the connecting ring and is located outside the shell, and the second end is connected to the valve; the inside of the cylindrical body is a channel connecting the first end and the second end, and the valve is provided with a valve head, which can move and block the channel during the opening and closing process of the valve.

[0009] In an optional embodiment, the inner diameter of the first end is larger than the inner diameter of the second end, and the size of the valve head is larger than or equal to the inner diameter of the second end.

[0010] In an optional embodiment, the longitudinal cross-section of the cylindrical body is circular, and the inner diameter gradually decreases from the first end to the second end.

[0011] In an optional embodiment, the valve head matches the inner wall of the second end, so that the second end serves as the starting point of the valve head's stroke. When the valve is opened or closed, the valve head can move within the channel according to the stroke.

[0012] In an optional embodiment, the distance from the first end to the second end is greater than the stroke of the valve head, and when the valve head is located at the end of the stroke, the valve head is located in the channel.

[0013] In an optional embodiment, the valve includes a main body and a valve stem, one end of the valve stem is connected to the valve head, and the other end of the valve stem is connected to the main body, and the valve head adjusts its stroke through the valve stem.

[0014] In an optional embodiment, the main body is provided with a plurality of ports, the plurality of ports are communicated through the interior of the main body, and the interior of the main body is communicated to the inside of the housing through a channel when the valve head is opened.

[0015] In an optional embodiment, when the valve head moves according to the stroke, the valve stem moves along the inlet and outlet direction of a port, so that the material flows in the same direction or in the opposite direction to the movement direction of the valve stem.

[0016] In an optional embodiment, a connector is further included, which is connected to the second end and connected to a port of the main body.

[0017] In an optional embodiment, there is a gap between the connecting ring and the hanging chain of the stirring device.

[0018] It can be seen from the above technical solution that the beneficial effects of this application are:

[0019] The present application provides a foundation for installing the valve by installing a connecting ring on the side of the shell, and forms a certain spacing distance between the valve and the shell through the cylindrical body, which can prevent the chain inside the shell from being wrapped around the valve head. The cylindrical body provides a channel for the movement of the valve head, and the valve head blocks the channel, so that the inside and outside of the shell can be sealed. During use, the valve head can move relative to the channel, which is equivalent to unblocking the channel during the opening and closing process of the valve, and the opening and closing of the valve is not affected by scarring. This can effectively reduce the speed of scar formation and the possibility of sinking accidents, meet the long-term stable operation requirements of the mixing equipment, effectively prevent the occurrence of safety accidents, effectively improve the operation cycle of the container, and reduce the cost of manual cleaning and maintenance, without introducing new technical problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other embodiments and drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of an embodiment of a valve assembly of a chain-type stirring device of the utility model is shown;

[0022] Figure numerals: 100, valve assembly; 110, connecting ring; 120, cylindrical body; 121, first end; 122, second end; 130, joint; 140, valve; 141, main body; 141a, port; 142, valve stem; 143, valve head; 144, turntable; 200, stirring device; 210; shell; 220, hanging chain. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0027] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0028] Please refer to Figure 1In the first aspect of the embodiment of the present application, a valve assembly for a chain-type stirring device is provided, which is used in multiple industries, such as a slurry stirring device 200 in the aluminum industry. The valve 140 assembly is installed on the stirring device 200, specifically on the side of a shell 210. The shell 210 has a thickness of, for example, 20 mm. An installation opening is provided on the side of the shell 210, and the installation opening is smoothly cut by gas welding. The valve 140 assembly includes a valve 140, a connecting ring 110 and a cylindrical body 120. The valve 140 is a fluid valve with a valve head 143. The valve head 143 serves as a structure for blocking the internal channel of the fluid valve. The connecting ring 110 is used to be installed on the side of the shell 210 of the stirring device 200, specifically installed at the above-mentioned installation port. The outer edge of the connecting ring 110 is welded and fixed to the installation port. The connecting ring 110 is annular. In an optional embodiment, the connecting ring 110 adopts a flange ring with a thickness of 20 mm to ensure reliable fixation. In an optional embodiment, there is a gap between the connecting ring 110 and the hanging chain 220 of the stirring device 200, which can prevent the hanging chain 220 of the stirring device 200 from breaking or falling off and being wrapped around the valve head 143. The cylindrical body 120 has two opposite ends, namely a first end 12 1 and the second end 122, the first end 121 is connected to the connecting ring 110 and is located outside the shell 210, so that the entire cylindrical body 120 is placed outside the shell 210, and the second end 122 is connected to the valve 140, so that a section of the length of the cylindrical body 120 is added between the valve 140 and the shell 210, so that the valve 140 is away from the hanging chain 220 in the stirring device 200, reducing the influence of the hanging chain 220; the interior of the cylindrical body 120 is a channel connecting the first end 121 and the second end 122, and the slurry is easily adhered to the channel and scarred, and the valve 140 is provided with a valve head 143, and the valve head 143 can move and block the channel during the opening and closing process of the valve 140, and the valve head 143 is controlled by the valve 140, such as the valve head 143 moves along a straight line and has a certain stroke, and can block the channel at the starting point or end point of the stroke.

[0029] The prior art uses a valve 140 structure to improve the scarring problem when solving the technical problem of scarring in the chain 220 type stirring device 200. However, if the valve 140 is directly installed on the pipeline, scarring will still occur over a long period of time, and the interior of some valves 140 will be entangled by the chain 220. The blade-type stirring structure is not easy to be entangled with the chain 220, but it will introduce the scarring problem, so there is currently no better solution. The present application replaces the existing direct connection method in which the valve 140 is fixed to the shell 210. A connecting ring 110 is installed on the side of the shell 210 to provide an installation base for the valve 140. A certain spacing distance is formed between the valve 140 and the shell 210 through the cylindrical body 120, so that the internal hanging chain 220 of the shell 210 is prevented from being wrapped around the valve head 143. A channel for the movement of the valve head 143 is provided through the cylindrical body 120, and the channel is blocked by the valve head 143, so that the sealing inside and outside of the shell 210 can be achieved. In use, the valve head 143 can move relative to the channel, which is equivalent to unblocking the channel during the opening and closing process of the valve 140. The opening and closing of the valve 140 is not affected by scarring, which can effectively reduce the speed of scarring formation and the possibility of sinking accidents, meet the long-term stable operation requirements of the mixing equipment 200, effectively prevent the occurrence of safety accidents, effectively improve the container operation cycle, reduce manual cleaning and maintenance costs, and will not introduce new technical problems.

[0030] In an optional embodiment, the inner diameter of the first end 121 is larger than the inner diameter of the second end 122, and the internal cross-section of the cylindrical body 120 can be circular, square or other regular shapes, ensuring that when the valve head 143 enters the channel from the second end 122, there is a gap between the valve head 143 and the inner wall of the channel, and the size of the valve head 143 is greater than or equal to the inner diameter of the second end 122, so that the area of ​​the slurry flowing through the valve head 143 is greater than or equal to the diameter of the area where the slurry enters the valve 140 at the second end 122, ensuring that a certain flow rate is maintained when the slurry passes through. In an optional embodiment, as shown in the figure, the longitudinal cross-section of the cylindrical body 120 is circular, and the inner diameter from the first end 121 to the second end 122 gradually decreases, such as a bell-mouth shape. With this structural form, when the valve 140 is opened, the initial resistance of the valve head 143 when it starts to move at the starting point of the stroke can be reduced, so that when the valve head 143 is opened, the scar is pushed to avoid the problem of scar blocking the second end 122.

[0031] In an optional embodiment, the valve head 143 matches the inner wall of the second end 122, so that the second end 122 serves as the starting point of the stroke of the valve head 143. When the valve 140 is opened or closed, the valve head 143 can move according to the stroke in the channel. A buffer area is formed between the valve 140 and the shell 210 through the cylindrical body 120. Even if the slurry in the channel is scarred, during the opening and closing process of the valve 140, the valve head 143 is equivalent to clearing the channel to avoid further scarring and reduce the amount of scarring. The outer peripheral shape of the valve head 143 matches the shape and size of the inner edge of the second end 122. The outer periphery of the valve head 143 serves as a sealing end face, and the sealing end face may also be slightly larger than the inner edge of the second end 122, as long as the valve head 143 can be sealed at the second end 122. In an optional embodiment, the distance from the first end 121 to the second end 122 is greater than the stroke of the valve head 143, that is, the length of the cylindrical body 120 is greater than or equal to the stroke of the valve head 143, and when the valve head 143 is at the end of the stroke, the valve head 143 is located in the channel, such as the end of the stroke is located in the channel adjacent to the second end 122, and the starting point of the stroke is located at the first end 121; through the above-mentioned arrangement, it is achieved that the valve head 143 does not enter the interior of the stirring device 200 while pushing the scar without affecting the movement of the valve head 143, thereby achieving the purpose of the anti-entanglement chain 220.

[0032] In an optional embodiment, the valve 140 includes a main body 141 and a valve stem 142. The main body 141 can be directly fixed to the second end 122 of the cylindrical body 120. One end of the valve stem 142 is connected to the valve head 143 to form a piston structure. The valve stem 142 and the valve head 143 can be fixed by welding, bolting or other convenient connection methods. The other end of the valve stem 142 is connected to the main body 141. Specifically, a valve seat is provided on the other side of the main body 141 opposite to the valve head 143. The valve seat and the valve stem 142 are threadedly matched, and the valve stem 142 can rotate relative to the valve seat. A turntable 144 is provided at the outer end of the valve stem 142. The structure of the turntable 144 is similar to that of a common manual rotary valve 140. The turntable 144 can facilitate the rotation of the valve stem 142. The valve stem 142 can simultaneously move along the axial direction of the valve stem 142 during the rotation process, so that the valve head 143 adjusts the active stroke through the valve stem 142. After the valve 140 is opened in this way, the valve head 143 is in the channel, and there is always a gap between the outer periphery of the valve head 143 and the inner wall of the channel, so that the fluid can pass through the channel. The valve head 143 moves a distance toward the shell 210 and pushes out the scar in the channel, but the valve head 143 does not enter the interior of the stirring device 200, thereby effectively avoiding the problem of the chain 220 being entangled with the valve head 143.

[0033] In an optional embodiment, the main body 141 is provided with a plurality of ports 141a, and the plurality of ports 141a are connected through the interior of the main body 141. When the valve head 143 is opened, the interior of the main body 141 is connected to the inner side of the housing 210 through a channel. As shown in the figure, the main body 141 is provided with three ports 141a, and the upper and lower ports 141a are respectively used as the inlet or outlet of the slurry, and the upper and lower ports 141a are respectively provided with flanges for external connection. The left port 141a is connected to the second end 122, and the port 141a and the second end 122 can be fixed by welding, bolting or other connection methods. After the connection, the interior of the main body 141 is connected to the interior of the stirring device 200 through a channel. In an optional embodiment, when the valve head 143 moves according to the stroke, the valve stem 142 moves along the inlet and outlet direction of a port 141a, so that the material flow direction is in the same direction or opposite direction as the moving direction of the valve stem 142, and the moving direction of the valve stem 142 is located in the axial direction of the valve stem 142. This ensures that the material flow direction is concentrated in the moving direction of the valve stem 142, reduces the radial force on the valve stem 142, increases the service life of the valve stem 142, and effectively reduces the problem of valve stem 142 breakage.

[0034] In an optional embodiment, a joint 130 is further included, the joint 130 is connected to the second end 122, the joint 130 is connected to a port 141a of the main body 141, the joint 130 adopts a flange, the flange has a through hole, the port 141a of the main body 141 also has a through hole, and the flange is connected to the main body 141 by bolts through the corresponding through holes, which can ensure the stability of the material flow at the port 141a, and also improve the connection stability between the cylindrical body 120 and the valve 140. The inner edges of the connecting ring 110 and the joint 130 are both round and smoothly transitioned, ensuring that the inner edges are smooth, and the slurry is evenly eroded when passing through, preventing abnormal wear of local areas due to uneven force, and extending the service life.

[0035] At present, this application has been successfully applied in our company's alumina decomposition system, and has achieved good economic and safety benefits. It provides a reference for the smooth stirring of similar liquid materials in the tank body and has universal applicability. The device has a simple structure and is used in a fully enclosed state. It is safe, reliable and risk-free. This application can be promoted and used in similar systems.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "optional example" or "optional implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0037] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0038] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A valve assembly for a chain-type stirring device, characterized in that: include: Valve (140); A connecting ring (110) is used for being mounted on a side of a housing (210) of a stirring device (200); A cylindrical body (120), wherein a first end (121) is connected to the connecting ring (110) and is located outside the shell (210), and a second end (122) is connected to the valve (140); the interior of the cylindrical body (120) is a passage connecting the first end (121) and the second end (122), and the valve (140) is provided with a valve head (143), and the valve head (143) can move and block the passage during the opening and closing process of the valve (140).

2. The valve assembly of the chain-type stirring device according to claim 1, characterized in that: The inner diameter of the first end (121) is greater than the inner diameter of the second end (122), and the size of the valve head (143) is greater than or equal to the inner diameter of the second end (122).

3. The valve assembly of the chain-type stirring device according to claim 2, characterized in that: The longitudinal cross-section of the cylindrical body (120) is circular, and the inner diameter gradually decreases from the first end (121) to the second end (122).

4. The valve assembly of the chain-type stirring device according to claim 3, characterized in that: The valve head (143) matches the inner wall of the second end (122), so that the second end (122) serves as the starting point of the stroke of the valve head (143). When the valve (140) is opened or closed, the valve head (143) can move within the channel according to the stroke.

5. The valve assembly of the chain-type stirring device according to claim 4, characterized in that: The distance from the first end (121) to the second end (122) is greater than the stroke of the valve head (143), and when the valve head (143) is located at the end of the stroke, the valve head (143) is located in the channel.

6. The valve assembly of the chain-type stirring device according to claim 1, characterized in that: The valve (140) comprises a main body (141) and a valve stem (142), one end of the valve stem (142) is connected to the valve head (143), the other end of the valve stem (142) is connected to the main body (141), and the valve head (143) adjusts its stroke through the valve stem (142).

7. The valve assembly of the chain-type stirring device according to claim 6, characterized in that: The main body (141) is provided with a plurality of ports (141a), and the plurality of ports (141a) are connected through the interior of the main body (141), and the interior of the main body (141) is connected to the inside of the housing (210) through the passage when the valve head (143) is opened.

8. The valve assembly of the chain-type stirring device according to claim 7, characterized in that: When the valve head (143) moves according to the stroke, the valve stem (142) moves along the inlet and outlet direction of the port (141a), so that the material flows in the same direction or in the opposite direction to the moving direction of the valve stem (142).

9. The valve assembly of the chain-type stirring device according to claim 7, characterized in that: It also includes a joint (130), wherein the joint (130) is connected to the second end (122), and the joint (130) is connected to a port (141a) of the main body (141).

10. The valve assembly of the chain-type stirring device according to any one of claims 1 to 9, characterized in that: There is a gap between the connecting ring (110) and the hanging chain (220) of the stirring device (200).

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