Distribution valve head of disc dehydrator

Abstract

The utility model relates to the technical field of filtering equipment, in particular to a disc dehydrator distribution valve head which comprises a valve body, a first adsorption area, a second adsorption area, a drying area and a blanking area are arranged in the valve body, a first adsorption area opening, a second adsorption area opening, a drying area opening and a blanking area opening are formed in the valve body, the first adsorption area opening is communicated with the first adsorption area, and the second adsorption area opening is communicated with the second adsorption area. A first flange, a second flange, a third flange and a fourth flange are arranged on the valve body, the first flange is communicated with the first adsorption area, the second flange is communicated with the second adsorption area, the third flange is communicated with the drying area, and the fourth flange is communicated with the discharging area. And pneumatic butterfly valves are mounted on the first flange, the second flange, the third flange and the fourth flange. And the negative pressure of each area is accurately controlled by adjusting the opening degree of each pneumatic butterfly valve, so that the accurate control on the forming process of the filter cake is realized.

Description

Technical Field

[0001] This application relates to the field of filtration equipment technology, and in particular to a distribution valve head for a disc dewatering machine. Background Technology

[0002] The disc dewatering machine is a high-tech solid-liquid separation product developed and manufactured specifically for the dewatering of gypsum slurry in limestone wet flue gas desulfurization systems of thermal power plants. This product boasts advantages such as high efficiency and energy saving, low production and operating costs, and clean and environmentally friendly operation, earning customer recognition. It has successfully served nearly a hundred thermal power companies and received widespread praise.

[0003] Typically, the thickness of the gypsum strip in a disc dewatering machine is naturally formed by the density of the gypsum slurry on-site through negative pressure suction. The thickness of the resulting filter cake can be finely adjusted by the rotation frequency of the central shaft and the primary dewatering equipment. Currently, the thickness of the gypsum strip can only be adjusted by the rotation frequency of the central shaft and the primary dewatering equipment, which cannot precisely adjust the filter cake thickness. Utility Model Content

[0004] This application aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide a distribution valve head for a disc dewatering machine, comprising a first adsorption zone, a second adsorption zone, a drying zone, and a material discharge zone, all isolated from each other. Each zone is connected to an external air pump via a corresponding flange and a pneumatic butterfly valve, allowing independent adjustment of the air pressure in each zone, thereby achieving precise control over the filter cake formation process.

[0005] A distribution valve head for a disc dewatering machine includes a valve body with a circular structure. The valve body contains a first adsorption zone, a second adsorption zone, a drying zone, and a discharge zone, all isolated from each other. The valve body has openings for the first adsorption zone, the second adsorption zone, the drying zone, and the discharge zone. The first adsorption zone opening connects to the first adsorption zone, the second adsorption zone opening connects to the second adsorption zone, the drying zone opening connects to the drying zone, and the discharge zone opening connects to the discharge zone. The valve body has a first flange, a second flange, a third flange, and a fourth flange. The first flange connects to the first adsorption zone, the second flange connects to the second adsorption zone, the third flange connects to the drying zone, and the fourth flange connects to the discharge zone. Pneumatic butterfly valves are installed on each of the first, second, third, and fourth flanges.

[0006] In an optional or preferred embodiment, the valve body is provided with a plurality of partitions extending radially inside, the plurality of partitions separating the first adsorption zone, the second adsorption zone, the drying zone and the discharge zone inside the valve body.

[0007] In an optional or preferred embodiment, the area of ​​the first adsorption region is larger than that of the second adsorption region, and the area of ​​the opening of the first adsorption region is larger than that of the opening of the second adsorption region.

[0008] In an optional or preferred embodiment, two drying zone openings are provided on the valve body, and the two drying zone openings are spaced apart from each other along the circumference of the valve body.

[0009] In an optional or preferred embodiment, the first flange and the third flange extend radially along the valve body.

[0010] In an optional or preferred embodiment, the second flange and the fourth flange are arranged radially perpendicular to the valve body.

[0011] Based on the above technical solution, the embodiments of this application have at least the following beneficial effects: The distribution valve head of the disc dewatering machine of this application sets up a first adsorption zone, a second adsorption zone, a drying zone and a material discharge zone that are isolated from each other. Each zone is connected to an external air pump through a corresponding flange and a pneumatic butterfly valve. The air pressure of each zone can be adjusted independently. Each flange is equipped with a pneumatic butterfly valve. The operator can adjust the opening degree of each pneumatic butterfly valve according to the actual working conditions to accurately control the air pressure of each zone, thereby achieving precise control of the filter cake formation process and solving the problem of not being able to accurately adjust the filter cake thickness in the prior art. Attached Figure Description

[0012] The present application will be further described below with reference to the accompanying drawings and embodiments;

[0013] Figure 1 This is a front view of the distribution valve head of the disc dewatering machine provided in the embodiments of this application;

[0014] Figure 2 This is a rear view of the distribution valve head of the disc dewatering machine provided in the embodiment of this application;

[0015] Figure 3 This is a left view of the distribution valve head of the disc dewatering machine provided in the embodiment of this application;

[0016] Figure 4 yes Figure 3 Sectional view along the AA direction. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of this application.

[0018] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0019] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0021] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The disc dewatering machine is a high-tech solid-liquid separation product developed and manufactured specifically for slurry dewatering in limestone wet flue gas desulfurization systems of thermal power plants. This product boasts advantages such as high efficiency and energy saving, low production and operating costs, and clean and environmentally friendly operation, earning customer recognition and widespread praise. It has successfully served nearly a hundred thermal power companies.

[0023] Typically, the thickness of the gypsum packing material in a disc dewatering machine is naturally formed by the density of the slurry on-site through negative pressure suction. The thickness of the resulting filter cake can be finely adjusted by the rotation frequency of the central shaft and the primary dewatering equipment. Currently, the thickness of the gypsum packing material can only be adjusted by the rotation frequency of the central shaft and the primary dewatering equipment, which cannot precisely adjust the filter cake thickness.

[0024] Reference Figures 1 to 4 The application provides a distribution valve head for a disc dewatering machine, including a circular valve body 100. The valve body 100 is divided into four isolated functional areas by four radially extending partitions 101, namely a first adsorption zone 110, a second adsorption zone 120, a drying zone 130, and a material discharge zone 140.

[0025] The valve body 100 is provided with a first adsorption zone opening 111, a second adsorption zone opening 121, a drying zone opening 131, and a material discharge zone opening 141. The first adsorption zone opening 111 is connected to the first adsorption zone 110, the second adsorption zone opening 121 is connected to the second adsorption zone 120, the drying zone opening 131 is connected to the drying zone 130, and the material discharge zone opening 141 is connected to the material discharge zone 140.

[0026] The first adsorption zone 110 is mainly responsible for the initial dewatering stage of the slurry, the second adsorption zone 120 is responsible for further dewatering, the drying zone 130 is responsible for drying the filter cake, and the discharge zone 140 is responsible for unloading the dried filter cake.

[0027] To achieve independent control of the negative pressure in each functional area, four flanges are installed on the valve body 100: the first flange 150, the second flange 160, the third flange 170, and the fourth flange 180. The first flange 150 connects to the first adsorption zone 110, the second flange 160 connects to the second adsorption zone 120, the third flange 170 connects to the drying zone 130, and the fourth flange 180 connects to the material discharge zone 140. Each flange is equipped with a pneumatic butterfly valve. By adjusting the opening of each pneumatic butterfly valve, the negative pressure in each functional area can be precisely controlled.

[0028] In this embodiment, to accommodate the need for a larger adsorption area during the initial dewatering of the slurry, the area of ​​the first adsorption zone 110 is designed to be larger than the area of ​​the second adsorption zone 120. Correspondingly, the area of ​​the opening 111 of the first adsorption zone is also larger than the area of ​​the opening 121 of the second adsorption zone. This design allows for sufficient negative pressure area during the initial dewatering stage, forming a filter cake of appropriate thickness, thus laying the foundation for subsequent dewatering treatment.

[0029] To improve the drying effect, two drying zone openings 131 are provided on the valve body 100, and the two drying zone openings 131 are spaced apart from each other along the circumference of the valve body 100. The two drying zone openings 131 share the same drying zone 130. This design makes the drying process more uniform and thorough, avoids the problem of uneven drying, and improves the drying quality of the filter cake.

[0030] In terms of flange arrangement, the first flange 150 and the third flange 170 extend radially along the valve body 100, while the second flange 160 and the fourth flange 180 are arranged perpendicular to the radial direction of the valve body 100. This arrangement facilitates pipe connection and promotes compact installation of the overall equipment.

[0031] In practical applications, the working process of the distribution valve head of this application is as follows: The slurry first enters the filter cloth area of ​​the disc dewatering machine. Under the negative pressure generated by the first adsorption zone 110, an initial filter cake is formed. The operator controls the negative pressure of the first adsorption zone 110 by adjusting the opening of the pneumatic butterfly valve on the first flange 150, thereby adjusting the thickness of the initial filter cake. Subsequently, the filter cake moves to the second adsorption zone 120, where it undergoes further dewatering under the negative pressure. The operator controls the negative pressure of the second adsorption zone 120 by adjusting the opening of the pneumatic butterfly valve on the second flange 160, so that the filter cake reaches a suitable moisture content.

[0032] The dehydrated filter cake continues to move to the drying zone 130, where it is dried under negative pressure. The drying intensity can be controlled by adjusting the opening of the pneumatic butterfly valve on the third flange 170. Finally, the dried filter cake moves to the discharge zone 140 and is unloaded with the assistance of air pressure.

[0033] Through the above design, the distribution valve head of the disc dewatering machine of this application can achieve precise control of the filter cake thickness, thereby improving dewatering efficiency and product quality, and solving the technical problem of the inability to precisely adjust the filter cake thickness in the prior art. At the same time, this application has a simple structure, low manufacturing cost, and is easy to install and maintain, possessing good practicality and promotional value.

[0034] In another embodiment, the area ratio of each functional area can be appropriately adjusted according to different operating conditions. For example, when processing slurries with high water content, the area ratio of the first adsorption zone 110 and the second adsorption zone 120 can be increased; when the product dryness requirement is high, the area ratio of the drying zone 130 can be increased. This flexible design allows the dispensing valve head of this application to adapt to different process requirements.

[0035] The distribution valve head of this application can also be used in conjunction with an automatic control system. By installing pressure sensors in each functional area, pressure signals are fed back to the control system, which automatically adjusts the opening degree of each pneumatic butterfly valve according to a preset program, thereby achieving automated control of the dehydration process and further improving production efficiency and product quality stability.

[0036] The disc dewatering machine of this application has a distribution valve head that is isolated from each other, consisting of a first adsorption zone 110, a second adsorption zone 120, a drying zone 130, and a discharge zone 140. Each zone is connected to an external air pump via a corresponding flange and a pneumatic butterfly valve, allowing independent adjustment of the air pressure in each zone. This enables precise control of the filter cake formation process and solves the problem of inaccurate filter cake thickness adjustment in existing technologies. The air pump connected to the discharge zone 140 is used for blowing air. After the air enters the discharge zone 140, it blows the filter cake off the filter cloth for discharge. The flanges corresponding to the first adsorption zone 110, the second adsorption zone 120, and the drying zone 130 are respectively connected to the same negative pressure pump through pipelines. The negative pressure pump provides negative pressure suction to the first adsorption zone 110, the second adsorption zone 120, and the drying zone 130.

[0037] This application improves the initial dehydration efficiency of the slurry by designing the area of ​​the first adsorption zone 110 to be larger than that of the second adsorption zone 120, which meets the requirement of a larger negative pressure area for initial adsorption during the dehydration process. In addition, the two drying zone openings 131 are set to make the drying process more uniform and thorough, thereby improving the drying effect of the final product.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A distribution valve head for a disc dewatering machine, characterized in that: The device includes a valve body, which is circular in structure. Inside the valve body are isolated first adsorption zones, second adsorption zones, a drying zone, and a discharge zone. The valve body has openings for the first adsorption zone, the second adsorption zone, the drying zone, and the discharge zone. The first adsorption zone opening connects to the first adsorption zone, the second adsorption zone opening connects to the second adsorption zone, the drying zone opening connects to the drying zone, and the discharge zone opening connects to the discharge zone. The valve body has a first flange, a second flange, a third flange, and a fourth flange. The first flange connects to the first adsorption zone, the second flange connects to the second adsorption zone, the third flange connects to the drying zone, and the fourth flange connects to the discharge zone. Pneumatic butterfly valves are installed on each of the first, second, third, and fourth flanges.

2. The distribution valve head of the disc dewatering machine according to claim 1, characterized in that: The valve body is provided with multiple baffles extending radially inside, which divide the valve body into a first adsorption zone, a second adsorption zone, a drying zone, and a material discharge zone.

3. The distribution valve head of the disc dewatering machine according to claim 1, characterized in that: The area of ​​the first adsorption region is larger than that of the second adsorption region, and the area of ​​the opening of the first adsorption region is larger than that of the opening of the second adsorption region.

4. The distribution valve head of the disc dewatering machine according to claim 1, characterized in that: The valve body is provided with two drying zone openings, which are spaced apart from each other along the circumference of the valve body.

5. The distribution valve head of the disc dewatering machine according to claim 1, characterized in that: The first flange and the third flange extend radially along the valve body.

6. The distribution valve head of the disc dewatering machine according to claim 5, characterized in that: The second flange and the fourth flange are arranged radially perpendicular to the valve body.

Images