High-temperature powder material shut-off valve

Abstract

The invention belongs to the technical field of powder material treatment equipment, and provides a high-temperature powder material shut-off valve. The valve comprises a valve body device and a valve driving mechanism, a left cooling cavity is formed in the left side of the valve body, a right cooling cavity is formed in the right side of the valve body, and the valve body device is made of high-temperature-resistant materials. The cooling device is communicated and matched with the left cooling cavity and the right cooling cavity; and the cooling device is used for cooling a valve body device comprising a bearing and a sealing part. Compared with the prior art, powder materials can be effectively cut off and isolated, and blocking is not prone to being formed; due to the arrangement of the cooling device, an external cooling medium can be guided in, effective cooling is formed in the valve body cooling cavity and the valve rod on the two sides of the valve element, and a bearing and a sealing part are protected; remote automatic operation can be realized, the intelligent control is strong, and the protection function is complete; the high-temperature powder material shut-off valve is suitable for the environment integrating various extreme working conditions such as high temperature, powder and vibration.

Description

Technical Field

[0001] The invention belongs to the technical field of powder material processing equipment, and in particular relates to a high-temperature powder material shut-off valve. Background Art

[0002] In the chemical industry, especially in the lithium carbonate production industry, material grinding is one of the important process links in the lithium carbonate preparation process. Therefore, a large amount of powder material transportation is involved in the front-end production process. In the powder material transportation process, a special shut-off valve must be used to meet the production control requirements. The characteristics of this type of material are high temperature, which can reach 800 degrees or above, dry powder, small particles or a mixture of the two, and high-frequency vibration is often accompanied during the material transportation process.

[0003] At present, the high-temperature powder material shut-off valves on the market usually adopt butterfly valve plates or plug-in shut-off structures. Due to the high-temperature characteristics of the materials, this type of shut-off valve often requires an extended valve yoke and valve stem design, or a special heat dissipation structure with heat sinks is arranged on the upper valve cover to protect the valve stem sealing material, prevent material leakage, extend its replacement cycle, and avoid the drive mechanism being too close to high temperature and damaged; in fact, passive heat dissipation designs such as heat sinks and extended valve stems cannot effectively reduce and isolate the temperature, which not only makes the service life of the sealing material unexpected, but also causes the valve to be bulky and the weight to increase accordingly. Summary of the invention

[0004] In view of the above problems existing in the prior art, the purpose of the present invention is to provide a high-temperature powder material shut-off valve to solve at least one technical problem raised by the background technology and adapt to an environment integrating multiple extreme working conditions such as high temperature, powder, vibration, etc.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A high-temperature powder material shut-off valve, comprising a valve body device and a valve drive mechanism, wherein the valve body device comprises a valve body with a valve cavity, a valve core with a bearing and a sealing component and capable of rotating with a 90-degree angular stroke, a feed port and a discharge port, the valve core being rotatably embedded in the valve cavity, the feed port being used to communicate with a feed pipe or a storage hopper, and the discharge port being used to communicate with a next-level process equipment through a pipe;

[0007] The valve body is provided with a left cooling chamber on the left side and a right cooling chamber on the right side, and the valve body device is made of high temperature resistant material;

[0008] It also includes a cooling device that is connected and cooperates with the left cooling chamber and the right cooling chamber, and the cooling device cools the valve body device including the bearing and the sealing component.

[0009] The cooling device comprises a cooling medium inlet, at least two manual shut-off valves, a stem cooler, a flow signal detection unit, a cooling medium outlet and a plurality of pipes, wherein the cooling medium inlet is a first port of one of the manual shut-off valves, the second port of the manual shut-off valve is connected to the stem cooling medium inlet of the stem cooler through a pipe, the stem cooling medium outlet of the stem cooler is connected to the left cooling chamber through a pipe, the right cooling chamber is connected to the port of another manual shut-off valve through a pipe, the port of the manual shut-off valve is the cooling medium outlet, and the flow signal detection unit is arranged on the pipe close to the cooling medium outlet side;

[0010] The cooling medium inlet is used to communicate with the cooling medium input pipeline to input low-temperature cooling medium; the cooling medium outlet is used to communicate with the cooling medium output pipeline to output the cooling medium with increased temperature after completing a work process; the flow signal detection unit is used to detect the flow of the cooling medium in the working state and make corresponding warning actions for abnormal signals; the manual shut-off valve is used for the maintenance of the cooling device or the operation when the high-temperature powder shut-off valve is out of use for a long time; the valve drive mechanism adopts standard industrial products, which is used to drive the valve stem to drive the valve core to operate, so as to realize remote automatic operation of the valve; so that the cooling device, the left cooling cavity, the valve body cavity and the right cooling cavity constitute a cooling cavity for the valve body device including bearings and sealing components.

[0011] As a preferred technical solution of the present invention, it also includes an exhaust unit;

[0012] The inlet port of the exhaust unit is connected to the three-way joint between the left cooling cavity and the right cooling cavity, and the outlet end of the exhaust unit is a free end.

[0013] As a preferred technical solution of the present invention, it also includes an over-temperature protection unit;

[0014] The inlet of the over-temperature protection unit is connected to the three-way joint between the left cooling chamber and the right cooling chamber, the channel center line of the over-temperature protection unit and the channel center line of the exhaust unit are on the same longitudinal line, and the outlet of the over-temperature protection unit is connected to the pipeline on the outlet side of the cooling medium.

[0015] As a preferred technical solution of the present invention, it also includes an automatic shut-off valve;

[0016] The two ports of the automatic shut-off valve are communicated between the signal detection component and the manual shut-off valve on the cooling medium outlet side.

[0017] As a preferred technical solution of the present invention, it also includes a floating pressure ring arranged above the material passage hole of the valve body and a sealing gasket sleeved on the floating pressure ring, and the floating pressure ring cooperates with the material passage hole cover arranged on the valve body.

[0018] As a preferred technical solution of the present invention, it also includes front and rear sealing chambers with annular sealing materials for surrounding the valve core and valve stem; after the front and rear sealing chambers are detachably assembled on the left and right cooling chamber side walls, the annular sealing materials can tightly fill the gap.

[0019] As mentioned above, the present invention relates to a high-temperature powder material shut-off valve having the following features:

[0020] Beneficial effects:

[0021] 1. The high-temperature powder material shut-off valve provided in the embodiment of the present invention has a compact structure, is simple and reliable, and is easy to operate. The valve core with a valve stem rotates back and forth at an angle of 90 degrees under the push of the valve driving mechanism, so that the through hole in the middle of the valve core is directly opposite or sideways to the material inlet direction, thereby realizing the opening or closing of the shut-off valve. In this process, the high-temperature powder material that enters the valve body through the rotating valve core has a small contact area with the material after being contacted by the valve core, and has a good longitudinal shear effect, thereby effectively cutting off and isolating the powder material, and is not easy to form a jam;

[0022] 2. The cooling device can introduce external cooling medium and form effective cooling in the valve body cooling cavity and the valve stem on both sides of the valve core to protect the bearings and sealing components;

[0023] 3. The shut-off valve has a compact overall structure and light weight. The valve body is mainly made of high-strength and high-temperature resistant materials. The valve body has extremely high strength and rigidity. The components are connected or fixed in a reliable manner to ensure that the valve can continuously and stably operate powder materials under high temperature conditions and high-frequency vibration environments for a long time.

[0024] 4. The present invention relates to components such as automatic shutoff valve, valve drive mechanism and signal detection assembly with multiple protection elements, which can be remotely and automatically operated, have the characteristics of strong intelligence and complete protection functions, and can be fully manually operated under special circumstances, so there are multiple operation modes for selection, convenient operation and strong practicality;

[0025] 5. The present invention adopts an elastic floating pressure ring design. When the valve is working normally, the valve core expands due to the high temperature. At this time, the floating pressure ring located above the valve body can automatically float up. When the valve is closed and the temperature drops, the floating pressure ring can automatically sink, thereby compensating for the thermal expansion of the valve core under high temperature. It can effectively prevent expansion resistance and ensure that the pressure ring is always in contact with the surface of the valve core to form a continuous and effective seal. This design enables the valve to have the ability to work under variable temperature conditions and has good market promotion and application value. In summary, the high-temperature powder material shut-off valve of the present invention is suitable for an environment that integrates multiple extreme conditions such as high temperature, powder, and vibration.

[0026] The present invention will be further described below in conjunction with specific implementation modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a high-temperature powder material shut-off valve provided in an embodiment of the present invention;

[0028] Figure 2 A front view of a high-temperature powder material shut-off valve from one perspective provided in an embodiment of the present invention.

[0029] Reference Numbers

[0030] 10. Valve body device; 101. Feed inlet; 102. Discharge outlet; 103. Left cooling chamber; 104. Right cooling chamber; 105. Floating pressure ring; 106. Valve core; 107. Sealing chamber cover; 20. Cooling and cooling device; 201. Cooling medium inlet; 202. Valve stem cooling medium inlet; 203. Valve stem cooling medium outlet; 204. Exhaust unit; 205. Over-temperature protection unit; 206. Flow signal detection unit; 207. Automatic shut-off valve; 208. Cooling medium outlet; 30. Valve drive mechanism. DETAILED DESCRIPTION

[0031] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0032] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects that the present invention can produce and the purposes that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantial changes in the technical content. The specific structure can be described with reference to the drawings of the patent application.

[0033] The present invention provides a high temperature powder material shut-off valve, please refer to Figure 1 and Figure 2 As shown, it includes a valve body device 10 and a valve drive mechanism 30. The valve body device 10 includes a valve body with a valve cavity (not shown in the figure, all are the same below), a valve core 106 with a bearing and a sealing component and capable of rotating with an angular stroke of 90 degrees, a feed port 101 and a discharge port 102. The valve core 106 is rotatably embedded in the valve cavity. The feed port 101 is used to communicate with a feed pipe or a storage hopper, and the discharge port 102 is used to communicate with the next-level process equipment through a pipe. The above structure belongs to the content of the prior art.

[0034] The innovative content of the high temperature powder material shut-off valve provided by the present invention is: Figure 1 and Figure 2 As shown, the left side of the valve body is provided with a left cooling chamber 103, and the right side of the valve body is provided with a right cooling chamber 104, and the valve body device 10 is made of high temperature resistant material;

[0035] It also includes a cooling device 20 that is connected and cooperates with the left cooling chamber 103 and the right cooling chamber 104. The cooling device 20 cools the valve body device including the bearing and the sealing component.

[0036] Specifically, please combine Figure 1 and Figure 2As shown, the cooling device 20 has a cooling medium inlet 201, at least two manual shut-off valves, a valve stem cooler, a flow signal detection component 206, a cooling medium outlet 203 and a plurality of pipes, wherein the cooling medium inlet 201 is a first port of one of the manual shut-off valves, the second port of the manual shut-off valve is connected to the valve stem cooling medium inlet of the valve stem cooler through a pipe, the valve stem cooling medium outlet of the valve stem cooler is connected to the left cooling chamber 103 through a pipe, the right cooling chamber 104 is connected to the port of another manual shut-off valve through a pipe, the port of the manual shut-off valve is the cooling medium outlet 203, and the flow signal detection component 206 is arranged on the pipe close to the cooling medium outlet 203 side;

[0037] The cooling medium inlet 201 is used to communicate with the cooling medium input pipeline to input low-temperature cooling medium; the cooling medium outlet 203 is used to communicate with the cooling medium output pipeline to output the cooling medium with increased temperature after completing a work process; the signal detection component is used to detect multiple physical quantities of the cooling medium in the working state including at least flow rate and temperature, and make corresponding warning actions for abnormal signals; the manual shut-off valve is used for the maintenance of the cooling device 20 or the operation when the high-temperature powder shut-off valve is out of use for a long time; the valve drive mechanism 30 adopts a standard industrial product, which is used to drive the valve stem to drive the valve core to operate, thereby realizing remote automatic operation of the valve; so that the cooling device 20, the left cooling chamber 103, the valve body cavity and the right cooling chamber 104 constitute a cooling and cooling cavity for the valve body device including bearings and sealing components.

[0038] Specific working process: please refer to Figure 1 and Figure 2 As shown, when the high-temperature powder material flows through the valve body device 10, it is controlled by the rotation angle of the valve core 106, thereby realizing the on-off function. The valve core 106 is the main moving part inside the shut-off valve, and reciprocates in the valve body with a 90-degree angular stroke, that is, when the through hole on the valve core 106 rotates to the same direction as the material inlet flow, the valve is in an open state, and when the through hole on the valve core 106 rotates to a direction perpendicular to the material inlet flow, the valve is in a closed state. At this time, one of the manual shut-off valves can be manually opened to allow the cooling medium to enter from the cooling medium inlet 201, and then the cooling and cooling device 20, the left cooling cavity 103, the cavity of the valve body and the right cooling cavity 104 form a cooling and cooling cavity for the valve body device including bearings and sealing components; in this way, by setting the cooling and cooling device, an external cooling medium can be introduced, which can achieve and form effective cooling and cooling in the valve body cooling cavity and the valve stem on both sides of the valve core to protect the bearings and sealing components.

[0039] It is understandable that the external cooling medium that can be introduced in the present invention mainly refers to liquid water, ethylene glycol and other liquids, but is not limited thereto and may also be gas, such as carbon dioxide, nitrogen and other suitable cooling media.

[0040] It should be noted that the cooling chamber is divided into two cooling chambers on the left and right (i.e., the left cooling chamber 103 and the right cooling chamber 104). Each cooling chamber has a sealing chamber (i.e., the front and rear sealing chambers). Shaft seals and bearings are installed in the sealing chambers. The shaft seals are used to seal to prevent material leakage. The bearings are used to support the valve stem to ensure flexible movement. There is a movable cover outside the sealing chamber. When the shaft seals and bearings need to be maintained or replaced, remove the screws and open the cover.

[0041] Please note: Please refer to Figure 1 and Figure 2 As shown, in this embodiment, valve stems are provided on both sides of the valve core 106 and supported by bearings, and the valve core can be flexibly rotated by applying a small torque. The floating pressure ring 105 is always attached to the outer wall of the valve core 106, that is, it also includes a floating pressure ring 105 arranged above the material passage hole of the valve body and a sealing gasket sleeved on the floating pressure ring 105. The floating pressure ring 105 cooperates with the material passage hole cover arranged on the valve body to effectively prevent material leakage when the valve is closed, and also prevent the valve core 106 from expanding due to high temperature thermal expansion. Cooling medium flows inside the left cooling chamber 104 and the right cooling chamber 103 to protect the support bearings and sealing rings of the valve stem from being affected by high temperature. There is an annular sealing material surrounding the valve stem in the rear sealing chamber 107, which tightly fills the gap to prevent material leakage.

[0042] The valve drive mechanism 30 is connected to the valve stem on the valve core. When the valve drive mechanism is running, the valve core is driven to rotate, thereby realizing the remote opening and closing operation of the valve. When the valve drive mechanism 30 loses power, the hand wheel can be operated to manually switch.

[0043] In this example, please refer to Figure 1 and Figure 2 As shown, it also includes components such as an exhaust unit 204, an over-temperature protection unit 205, a flow signal protection unit 206, and an automatic shut-off valve 207 (such as an electric two-way valve); the cooling medium inlet 201 and the cooling medium outlet 208 are both provided with manual shut-off valves to facilitate maintenance or overhaul operations, and can also be operated when the equipment is out of service for a long time.

[0044] It should be noted that, in the present embodiment, the left cooling chamber 104, the right cooling chamber 103 and the sealing chamber cover 107 are all designed as detachable structures to facilitate the maintenance and replacement of wearing parts in the later stage.

[0045] It should be noted that, in this embodiment, the left cooling chamber 104 and the right cooling chamber 103 are made of metal materials different from the main body material, which are light in weight, high in strength, good in thermal conductivity, and strong in corrosion resistance. They can effectively reduce the overall weight of the valve and facilitate processing, while ensuring the strength and durability of the various structural parts of the cooling chamber.

[0046] It should be noted that the bottom of the floating pressure ring 105 is elastically supported by multiple groups of high temperature resistant springs. The springs fit the sealing ring tightly to the outer surface of the valve core 106 with appropriate force to prevent material leakage. When the valve core expands due to heat, the spring compression provides sufficient compensation space. That is, the floating structure can accurately supplement the space required for the eccentric rotation of the valve core and thermal expansion and contraction while preventing material leakage, ensuring the normal operation of the valve. The floating pressure ring 105 has a detachable structural design, which is convenient for the replacement of wearing parts and maintenance and repair in the later stage.

[0047] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A high-temperature powder material shut-off valve, comprising a valve body device and a valve drive mechanism, wherein the valve body device comprises a valve body with a valve cavity, a valve core with a bearing and a sealing component and capable of rotating at a 90-degree angular stroke, a feed port and a discharge port, the valve core being rotatably embedded in the valve cavity, the feed port being used to communicate with a feed pipe or a storage hopper, and the discharge port being used to communicate with a next-level process equipment through a pipe; characterized in that: The valve body has a left cooling chamber on the left side and a right cooling chamber on the right side, and the valve body device is made of high-temperature resistant material; it also includes a cooling device that is connected and cooperated with the left cooling chamber and the right cooling chamber, and the cooling device cools the valve body device including bearings and sealing components.

2. A high temperature powder material shut-off valve as claimed in claim 1, characterized in that: The cooling device comprises a cooling medium inlet, at least two manual shut-off valves, a stem cooler, a flow signal detection unit, a cooling medium outlet and a plurality of pipes, wherein the cooling medium inlet is a first port of one of the manual shut-off valves, the second port of the manual shut-off valve is connected to the stem cooling medium inlet of the stem cooler through a pipe, the stem cooling medium outlet of the stem cooler is connected to the left cooling chamber through a pipe, the right cooling chamber is connected to the port of another manual shut-off valve through a pipe, the port of the manual shut-off valve is the cooling medium outlet, and the flow signal detection unit is arranged on the pipe close to the cooling medium outlet side; The cooling medium inlet is used to communicate with the cooling medium input pipeline to input low-temperature cooling medium; the cooling medium outlet is used to communicate with the cooling medium output pipeline to output the cooling medium with increased temperature after completing a work process; the flow signal detection unit is used to detect the flow of the cooling medium in the working state and make corresponding warning actions for abnormal signals; the manual shut-off valve is used for the maintenance of the cooling and cooling device or the operation when the high-temperature powder shut-off valve is out of use for a long time; the valve drive mechanism adopts standard industrial products, which is used to drive the valve stem to drive the valve core to operate, so as to realize remote automatic operation of the valve; so that the cooling and cooling device, the left cooling cavity, the cavity of the valve body and the right cooling cavity constitute a cooling cavity for high-temperature powder materials.

3. A high temperature powder material shut-off valve as claimed in claim 2, characterized in that: Also included is an exhaust unit; The inlet port of the exhaust unit is connected to the three-way joint between the left cooling cavity and the right cooling cavity, and the outlet end of the exhaust unit is a free end.

4. A high-temperature powder material shut-off valve as claimed in claim 3, characterized in that: Also includes an over-temperature protection unit; The inlet of the over-temperature protection unit is connected to the three-way joint between the left cooling chamber and the right cooling chamber, the channel center line of the over-temperature protection unit and the channel center line of the exhaust unit are on the same longitudinal line, and the outlet of the over-temperature protection unit is connected to the pipeline on the outlet side of the cooling medium.

5. A high temperature powder material shut-off valve as claimed in claim 2, characterized in that: Also included is an automatic shutoff valve; The two ports of the automatic shut-off valve are communicated between the signal detection component and the manual shut-off valve on the cooling medium outlet side.

6. A high temperature powder material shut-off valve as described in claims 1-5, characterized in that: It also includes a floating pressure ring arranged above the material passing hole of the valve body and a sealing gasket sleeved on the floating pressure ring, and the floating pressure ring cooperates with the material passing hole cover arranged on the valve body.

7. A high temperature powder material shut-off valve according to any one of claims 1 to 5, characterized in that: It also includes front and rear sealing chambers with annular sealing materials for surrounding the valve core and valve stem; after the front and rear sealing chambers are detachably assembled on the left and right cooling cavity side walls, the annular sealing materials can tightly fill the gap.

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