Dry-type filter cloth cleaning device of vacuum belt filter

Abstract

The utility model discloses a dry-type filter cloth cleaning device of a vacuum belt filter, which is characterized in that on the basis of the traditional belt filter, a filter cloth washing device is omitted, an air feeder, an electric heater and a hot air pipeline are arranged to dry wet filter cloth, and a plurality of pneumatic pulse vibrators are uniformly arranged in a filter cloth sealing channel, so that the wet filter cloth can be cleaned. The pneumatic pulse vibrators are connected through the circular shaft type carrier rollers, a plurality of electric rolling brushes are further installed in the filter cloth sealing channel, the electric rolling brushes and the circular shaft type carrier rollers are arranged at different heights, brushes of the electric rolling brushes drive the filter cloth to be conveyed, meanwhile, product dust attached to the surface of the dried filter cloth is cleaned, and meanwhile, the filter cloth is dried. The pneumatic pulse vibrator drives the circular shaft type carrier roller to oscillate the filter cloth, dust attached to the surface of the filter cloth is promoted to fall off, fallen materials are conveyed to the air suction opening through the air duct, sucked by the suction ventilator and then conveyed to the dust collector to be collected and recycled, the air permeability of the filter cloth is improved through the design, the operation environment is optimized, and sewage discharge is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to solid -liquid separation system of chemical industry, sewage treatment, ore dressing etc. BACKGROUND

[0002] At present, the vacuum belt filter is generally used in the chemical industry such as soda ash and chemical fertilizer to separate the slurry of chemical products in the production process, and solid products such as soda ash, baking soda, ammonium chloride and ammonium sulfate are obtained, the filter cloth is cleaned by mother liquor or tap water, which gives more burden to production. Washing the filter cloth with tap water can cause the liquid expansion problem of the whole chemical production system, and increase the load of the sewage treatment system. Washing the filter cloth with the mother liquor of the product can cause incomplete cleaning of the filter cloth, poor air permeability, affect the normal filtration work of the belt filter, increase the water content of the product, and also cause more solid materials in the cleaning liquid, turbidity of the mother liquor, poor working environment of the belt filter, regular cleaning and other work burdens.

[0003] Therefore, the inventor has invented a dry cleaning filter cloth device after continuous optimization, improvement and testing, which has the characteristics of improving the air permeability of the filter cloth, improving the operating environment, reducing sewage discharge and reducing the operation cost. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a filter cloth cleaning and cleaning equipment for a vacuum belt filter, which can improve the air permeability of the filter cloth, improve the operating environment and reduce sewage discharge. The equipment is composed of multiple parts, including a filter cloth sealing channel, a hot air feeding and air suction recovery device, a pneumatic or electric pulse oscillation device and a rolling brush device. Through the cooperative work of these components, the filter cloth surface can be effectively cleaned, the performance decline caused by pollution of the filter cloth can be avoided, the service life of the filter cloth can be prolonged, the filtration efficiency can be improved, and the influence of sewage discharge on the environment can be reduced.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a kind of vacuum belt filter dry type clean filter cloth device, including air supply unit, electric heater, hot air pipeline, filter cloth sealing passage, filter cloth, pneumatic pulse vibrator, electric roller brush, dust collector, the filter cloth sealing passage is rectangular hollow shell, its left and right two sides end is symmetric and is respectively provided with inlet and outlet, the inlet of filter cloth sealing passage is equipped with air inlet, air inlet is connected with the air outlet end of electric heater by hot air pipeline, the air outlet end of air supply unit is connected to the air inlet end of electric heater, outlet is equipped with suction port, suction fan is equipped on suction port, the suction end of suction fan is connected with suction port, air outlet end is connected with dust collector by pipeline, air inlet, suction port are located respectively at the front and back two sides end of filter cloth sealing passage, and are respectively arranged at the left and right two sides end of filter cloth sealing passage, filter cloth sealing passage is symmetric and is uniformly provided with several pneumatic pulse vibrators in front and back two sides end, pneumatic pulse vibrator is connected between front and back two sides end by circular shaft type carrier roller, be set at the end of filter cloth far from material, the outside circumference of carrier roller is in contact with filter cloth, every two pneumatic pulse vibrators are equipped with electric roller brush, at the end of filter cloth close to material, and with pneumatic pulse vibrator height setting, the input end of electric roller brush is connected with the output end of driving motor, several brushes are equipped on electric roller brush, and brush is in contact with filter cloth.

[0006] Preferably, the length of the electric roller brush corresponds to the width of the filter cloth sealing passage, and the end of the electric roller brush away from the driving motor is in contact with the inner wall of the filter cloth sealing passage, and a bearing seat is connected to the contact end of the filter cloth sealing passage.

[0007] Preferably, the circular shaft type carrier roller and the electric roller brush form a transmission space for the filter cloth.

[0008] Preferably, the air inlet, the filter cloth sealing passage and the suction port form a hot air channel.

[0009] Preferably, the pneumatic pulse vibrator is connected to a gas source through a pipeline, and an adjusting valve is provided on the pipeline.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] By canceling the water washing filter cloth device on the basis of the traditional belt filter, the filter cloth is dried by setting the air blower, electric heater and hot air pipeline, a plurality of pneumatic pulse vibrators are uniformly arranged in the filter cloth sealing channel, the pneumatic pulse vibrators are connected through the round shaft type carrier roller, a plurality of electric rolling brushes are installed in the filter cloth sealing channel and are arranged at different heights with the round shaft type carrier roller, the brush of the electric rolling brush drives the filter cloth to convey and simultaneously clean the product dust attached to the surface of the dried filter cloth, simultaneously, the pneumatic pulse vibrators drive the round shaft type carrier roller to oscillate the filter cloth, so that the dust attached to the surface of the filter cloth is dropped, the dropped material is transmitted to the air suction port through the air duct, is sucked into the air blower and is sent to the dust collector for trapping and recycling, the air permeability of the filter cloth is improved, the operation environment is optimized, and the sewage discharge is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a whole structure schematic view of the utility model.

[0013] In the drawing: 1, air blower; 2, electric heater; 3, hot air pipeline; 4, filter cloth sealing channel; 5, filter cloth; 6, pneumatic pulse vibrator; 7, electric rolling brush; 8, dust collector. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0015] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "another end" is the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0016] In the description of the utility model, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0018] Embodiment 1: refer to Figure 1 The utility model provides a kind of dry cleaning filter cloth device of vacuum belt filter, including air supply machine 1, electric heater 2, hot air pipeline 3, filter cloth sealing passage 4, filter cloth 5, since filter cloth 5 is used as the filter layer of vacuum absorption of solid-liquid separation of belt filter, filter cloth 5 one side is solid slurry material, one side is connected vacuum negative pressure system, under the action of negative pressure suction, solid is intercepted in filter cloth 5 one side, liquid passes through negative pressure suction and penetrates filter cloth 5 and enters vacuum system, to achieve the purpose of solid-liquid separation, filter cloth 5 separates solid-liquid after solid slurry material, filter cloth 5 surface adheres a layer of small amount of solid material, while filter cloth 5 also becomes humid state, cleaning treatment is needed at this time, pneumatic pulse vibrator 6, electric roller brush 7, dust collector 8, filter cloth sealing passage 4 is rectangular hollow shell, filter cloth sealing passage 4 is the box that filter cloth 5 of belt filter is closed, install in filter cloth 5 after the filtration material of belt filter, so that the product dust adhered on filter cloth 5 falls off and is collected, it is a relatively sealed box, box is made of steel plate, box is equipped with air inlet and air outlet, the design of sealing avoids hot air leakage, ensure the efficiency of hot air system, simultaneously convenient for the separation and collection of material, can also effectively control dust leakage, improve the cleanliness of working environment, its left and right sides are symmetrical and respectively set up with material inlet and discharge port, material inlet is used to send filter cloth 5 to be cleaned into filter cloth sealing passage 4 and clean, discharge port conveys filter cloth 5 cleaned and exports, simultaneously be equipped with air inlet equipment and suction equipment on material inlet and discharge port, air inlet equipment is transmitted to filter cloth sealing passage 4 with hot air, filter cloth 5 is dried, simultaneously with suction equipment between constitution air duct, cover the internal space of filter cloth sealing passage 4,

[0019] The inlet of the filter cloth sealing channel 4 is provided with an air inlet, and the air inlet is connected with the air outlet end of the electric heater 2 through the hot air pipeline 3. The electric heater 2 is connected with the power supply, and the electric heater 2 can be replaced by a waste heat recovery heat exchanger. The waste heat recovery heat exchanger is a heat exchanger for exchanging heat between waste heat and air, and can heat the air. The working principle of the electric heater 2 is the same as that of the waste heat recovery heat exchanger, and both are devices that can heat the air. The heated air is sent into the filter cloth sealing channel 4, effectively improves the temperature, promotes the evaporation of moisture and the falling of some dust on the surface of the filter cloth 5, and the falling dust enters the air inlet end of the dust collector 8 through the air duct. The air outlet end of the air blower 1 is connected with the air inlet end of the electric heater 2. The air blower 1 is used to send air or hot air into the system, and is driven by the driving motor to provide the necessary air flow, so that the air is transmitted to the position of the electric heater 2, the air is heated and is delivered into the filter cloth sealing channel 4 through the hot air pipeline 3, and is uniformly acted on the filter cloth 5 for drying. The forced air supply is used to increase the air flow speed, ensure the working efficiency of the system, and provide sufficient air volume to ensure the effectiveness of the hot air system. The air blower 1 is a standard device, the discharge port is provided with an air suction port, the air suction port is provided with an air suction fan, the suction end of the air suction fan is connected with the air suction port, the air suction fan is controlled by being connected with the driving motor, the air suction fan sucks the hot air in the filter cloth sealing channel 4 through the suction end, and discharges the air containing solid materials to the dust collector 8 through the air suction port, helps to suck away the dust generated in the cleaning process, the air outlet end is connected with the dust collector 8 through the pipeline, the hot air sucked by the air suction fan is discharged into the dust collector 8 through the pipeline, and is discharged into the atmosphere after being purified and collected, the particulate matters are collected by the dust collector 8 and are used as products, the air inlet and the air suction port are respectively located at the front and rear ends of the filter cloth sealing channel 4, and are respectively arranged at the left and right cut-off ends of the filter cloth sealing channel 4. The air inlet and the air suction port are respectively arranged at the two ends of the filter cloth sealing channel 4, and form a complete hot air channel. This design can ensure that the hot air is uniformly distributed in the whole channel, avoid local high or low temperature, and more uniformly heat and dry the filter cloth 5 and the adhered materials, improve the drying quality. The air inlet, the filter cloth sealing channel 4 and the air suction port constitute a hot air channel. The purpose of the hot air channel is to dry the filter cloth 5 and the adhered materials by using the heat carried by the hot air. The front and rear ends of the filter cloth sealing channel 4 are symmetrically and uniformly provided with a plurality of pneumatic pulse vibrators 6. The pneumatic pulse vibrators 6 are connected with the air source through the pipeline, and the pipeline is provided with an adjusting valve. The adjusting valve is used to drive the vibration size of the pneumatic pulse vibrators 6. The pneumatic pulse vibrators 6 are used to pulse vibrate the filter cloth 5, and the pneumatic pulse vibrators 6 can be replaced by an electric pulse oscillator. The pneumatic pulse vibrators 6 are driven by the air source to provide a short-time vibration force, improve the material falling effect, and are communicated with the compressed air. The pneumatic pulse vibrators 6 are driven by the compressed air to rotate the cam for pulse oscillation and play a vibration role. If the electric pulse oscillator is used, the motor is needed to drive the cam for pulse oscillation to play a vibration role.The circular shaft type carrier rollers are connected between the front and rear two side ends of the pneumatic pulse vibrator 6, and the carrier rollers serve as connecting devices, which can effectively transmit the pulse vibration force generated by the vibrator to the filter cloth 5, so as to realize the dust cleaning effect. Meanwhile, the circular shaft type carrier rollers have bearing seats and synchronously follow the conveying rotation of the filter cloth 5. When the electric roller brush 7 rotates, the carrier rollers can press and convey the filter cloth 5 together with the electric roller brush 7. The carrier rollers are arranged at the end of the filter cloth 5 away from the material, and the outer circumference of the carrier rollers is in contact with the filter cloth 5. The electric roller brush 7 is arranged between every two pneumatic pulse vibrators 6, and the electric roller brush 7 is used for cleaning the attachments on the surface of the filter cloth 5. Through the contact with the filter cloth 5, the brush can brush off the solid material attached to the filter cloth 5. Subsequently, the dust is conveyed to the air suction port through the air duct and is collected. The electric roller brush 7 can provide continuous cleaning action when the filter cloth 5 is cleaned, so as to ensure that the material on the surface of the filter cloth 5 is completely removed. Meanwhile, the brush is in contact with the filter cloth 5, and the filter cloth 5 is synchronously driven to convey when the electric roller brush 7 rotates. The electric roller brush 7 is arranged at the end of the filter cloth 5 close to the material and is arranged higher than the pneumatic pulse vibrator 6. The input end of the electric roller brush 7 is connected with the output end of the driving motor. The electric roller brush 7 is provided with a plurality of brushes, and the brushes are in contact with the filter cloth 5.

[0020] The length of the electric roller brush 7 corresponds to the width of the filter cloth sealing channel 4, so as to ensure that the electric roller brush 7 can completely cover the width of the filter cloth sealing channel 4, avoid the situation that the dust is leaked or the filter cloth 5 is not completely cleaned, and improve the cleaning efficiency. The end of the electric roller brush 7 away from the driving motor is in contact with the inner wall of the filter cloth sealing channel 4. The contact end of the electric roller brush 7 with the filter cloth sealing channel 4 is connected with a bearing seat. The bearing seat is used for supporting and positioning the end of the electric roller brush 7 away from the driving end, and simultaneously provides the rotating position, so as to reduce the friction force during rotation.

[0021] The transmission space of the filter cloth 5 is formed between the circular shaft type carrier roller and the electric roller brush 7. The transmission space between the circular shaft type carrier roller and the electric roller brush 7 provides a stable conveying path for the filter cloth 5. The carrier roller supports the filter cloth 5, so as to ensure that the filter cloth can be stably and uniformly conveyed. The electric roller brush 7 drives the filter cloth 5 through rotation. This design can avoid the situation that the filter cloth is twisted, wrinkled or deviated during the conveying process, so as to ensure that the filter cloth maintains a consistent running state during the whole process.

[0022] In use, the filter cloth 5 in a wet state is put into the filter cloth sealing channel 4, the filter cloth 5 is conveyed through the cooperation of the rolling brush of the electric rolling brush 7, at this time the air blower 1 is driven by the driving motor, air is transmitted to the electric heater 2, the hot air is transmitted to the filter cloth sealing channel 4 through the electric heater 2, at this time the pneumatic pulse vibrator 6 is pneumatic, the intermediate connected round shaft type carrier roller is vibrated, the material adhered to the dried filter cloth 5 is vibrated and falls off, at the same time the filter cloth 5 is conveyed by extruding the filter cloth 5 with the electric rolling brush 7, the electric rolling brush 7 cleans the one end of the filter cloth 5 in the conveying process, the dust scraped off and vibrated off is sucked by the air blower and transmitted to the dust collector 8, the dust is discharged into the atmosphere after purification and dust collection, the particulate matter is collected by the dust collector 8 and used as a product.

[0023] The above is only the embodiment of the present application, and the specific structure and characteristics of the scheme and other common knowledge are not described in detail. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A dry cleaning device for a vacuum belt filter, characterized in that: The system includes a blower (1), an electric heater (2), a hot air duct (3), a filter cloth sealing channel (4), a filter cloth (5), a pneumatic pulse vibrator (6), an electric roller brush (7), and a dust collector (8). The filter cloth sealing channel (4) is a rectangular hollow shell with symmetrical inlet and outlet on its left and right sides. The inlet of the filter cloth sealing channel (4) is equipped with an air inlet, which is connected to the outlet of the electric heater (2) through the hot air duct (3). The air inlet of the electric heater (2) is connected to the outlet of the blower (1). The outlet is equipped with a suction port, and a suction fan is installed on the suction port. The suction end of the suction fan is connected to the suction port, and the outlet is connected to the dust collector (8) through a duct. The air inlet and suction port are located on the filter cloth. The front and rear ends of the sealing channel (4) are respectively set at the left and right ends of the filter cloth sealing channel (4). Several pneumatic pulse vibrators (6) are symmetrically and evenly arranged at the front and rear ends of the filter cloth sealing channel (4). The pneumatic pulse vibrators (6) at the front and rear ends are connected by a round shaft roller. They are located on the filter cloth (5) at the end away from the material. The outer circumference of the roller is in contact with the filter cloth (5). An electric roller brush (7) is provided between every two pneumatic pulse vibrators (6). It is located on the filter cloth (5) at the end close to the material and is set at a height of the pneumatic pulse vibrator (6). The input end of the electric roller brush (7) is connected to the output end of the drive motor. Several brushes are provided on the electric roller brush (7). The brushes are in contact with the filter cloth (5).

2. The dry cleaning device for a vacuum belt filter as described in claim 1, characterized in that: The length of the electric roller brush (7) is set to correspond to the width of the filter cloth sealing channel (4). The end of the electric roller brush (7) away from the drive motor abuts against the inner wall of the filter cloth sealing channel (4), and a bearing seat is connected to the end of the electric roller brush (7) that contacts the filter cloth sealing channel (4).

3. The dry cleaning device for a vacuum belt filter according to claim 1, characterized in that: The circular roller and the electric roller (7) form the transmission space of the filter cloth (5).

4. The dry cleaning device for a vacuum belt filter as described in claim 1, characterized in that: The air inlet, filter cloth sealing channel (4), and air intake constitute a hot air channel.

5. A dry cleaning device for a vacuum belt filter according to claim 1, characterized in that: The pneumatic pulse vibrator (6) is connected to the air source through a pipeline, and a regulating valve is provided on the pipeline.

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