阅读说明：本技术 一种具有多级逆流洗涤功能的无滤布真空吸滤机 (Filter cloth-free vacuum suction filter with multistage countercurrent washing function ) 是由 陈海珊 郑明明 朱辉燕 周小红 于 2019-12-16 设计创作，主要内容包括：本发明公开了一种具有多级逆流洗涤功能的无滤布真空吸滤机,包括与无滤布真空吸滤机的转鼓的侧壁转动连接的分配盘和固设在分配盘上的端壳,端壳上设置有第一出液口、第二出液口、第三出液口、第四出液口及与低真空区连通的第五出液口；转鼓上方设置有第一喷淋管、第二喷淋管、第三喷淋管和第四喷淋管,第一喷淋管对应第二高真空区,第二喷淋管对应第三高真空区,第三喷淋管和第四喷淋管均对应第四高真空区；还包括清水贮罐、第一贮罐、第二贮罐、第三贮罐、第四贮罐及第五贮罐。本发明具有多级逆流洗涤功能的无滤布真空吸滤机降低了无滤布真空吸滤机洗涤滤层的用水量,提高了滤液转光度、降低了后续的物料浓缩成本。(The invention discloses a non-filter cloth vacuum suction filter with a multistage countercurrent washing function, which comprises a distribution disc rotationally connected with the side wall of a rotary drum of the non-filter cloth vacuum suction filter and an end shell fixedly arranged on the distribution disc, wherein the end shell is provided with a first liquid outlet, a second liquid outlet, a third liquid outlet, a fourth liquid outlet and a fifth liquid outlet communicated with a low vacuum area; a first spray pipe, a second spray pipe, a third spray pipe and a fourth spray pipe are arranged above the rotary drum, the first spray pipe corresponds to the second high-vacuum area, the second spray pipe corresponds to the third high-vacuum area, and the third spray pipe and the fourth spray pipe both correspond to the fourth high-vacuum area; the device also comprises a clear water storage tank, a first storage tank, a second storage tank, a third storage tank, a fourth storage tank and a fifth storage tank. The filter cloth-free vacuum suction filter with the multistage countercurrent washing function reduces the water consumption for washing the filter layer of the filter cloth-free vacuum suction filter, improves the conversion degree of the filtrate and reduces the subsequent material concentration cost.)

1. A non-filter cloth vacuum suction filter with multistage countercurrent washing function is characterized in that: comprises a distribution disc rotationally connected with the side wall of a rotary drum of the filter cloth-free vacuum filter and an end shell fixedly arranged on the distribution disc, the distribution disc is circumferentially and sequentially provided with a first high vacuum area, a second high vacuum area, a third high vacuum area, a fourth high vacuum area, a low vacuum area and a resting area, the first high vacuum area, the second high vacuum area, the third high vacuum area, the fourth high vacuum area and the low vacuum area are all fan-shaped through holes arranged on the distribution plate and can be communicated with a transverse liquid conveying pipeline in the rotary drum, the end shell is provided with a first liquid outlet communicated with the first high vacuum area, a second liquid outlet communicated with the second high vacuum area, a third liquid outlet communicated with the third high vacuum area, a fourth liquid outlet communicated with the fourth high vacuum area and a fifth liquid outlet communicated with the low vacuum area; a first spray pipe, a second spray pipe, a third spray pipe and a fourth spray pipe are arranged above the rotary drum, the first spray pipe corresponds to the second high-vacuum area, the second spray pipe corresponds to the third high-vacuum area, the third spray pipe and the fourth spray pipe both correspond to the fourth high-vacuum area, the third spray pipe is close to the third high-vacuum area, and the fourth spray pipe is close to the low-vacuum area;

the water outlet of the clear water storage tank is connected with the first spraying pipe, the first liquid outlet is connected with the water inlet of the first storage tank, the water outlet of the first storage tank is connected with the second spraying pipe, the second liquid outlet is connected with the water inlet of the second storage tank, the water outlet of the second storage tank is connected with the third spraying pipe, the third liquid outlet is connected with the water inlet of the third storage tank, the water outlet of the third storage tank is connected with the fourth spraying pipe, the fourth liquid outlet is connected with the water inlet of the fourth storage tank, and the fifth liquid outlet is connected with the water inlet of the fifth storage tank; the clean water storage tank is connected with the first spray pipe through a connecting pipe, the first storage tank is connected with the second spray pipe through a connecting pipe, the second storage tank is connected with the third spray pipe through a connecting pipe, and the third storage tank is connected with the fourth spray pipe through a connecting pipe.

2. The filter-cloth-free vacuum suction filter with multistage countercurrent washing function according to claim 1, characterized in that: the first spray pipe, the second spray pipe, the third spray pipe and the fourth spray pipe are all provided with a plurality of spray heads, the specific number of the spray heads is reasonably designed according to the axial length of the rotary drum, and spray water or spray filtrate at all levels can cover the adsorption filter layer on the axial surface of the rotary drum.

3. The filter-cloth-free vacuum suction filter with multistage countercurrent washing function according to claim 1, characterized in that: the distribution disc and the rotary drum are in dynamic sealing.

4. The filter-cloth-free vacuum suction filter with multistage countercurrent washing function according to claim 1, characterized in that: the end shell is fixedly connected with a frame of the filter cloth-free vacuum suction filter through a connecting rod.

5. The filter-cloth-free vacuum suction filter with multistage countercurrent washing function according to claim 1, characterized in that: a material groove is formed below the rotary drum, the bottom of the rotary drum can be immersed in materials in the material groove, a stirring device is arranged in the material groove, a scraping plate is arranged at one end of the material groove, one end of the scraping plate is close to the surface of the rotary drum, and the distance between the scraping plate and the surface of the rotary drum is adjustable.

6. The filter-cloth-free vacuum suction filter with multistage countercurrent washing function according to claim 1, characterized in that: the cylindrical surface of the rotary drum is provided with a stainless steel filter plate.

7. The filter-cloth-free vacuum suction filter with multistage countercurrent washing function according to claim 1, characterized in that: the rotary drum comprises 12-24 suction chambers, the number of the infusion pipelines is the same as that of the suction chambers, the infusion pipelines correspond to the suction chambers one by one, and the suction chambers are communicated with the corresponding infusion pipelines through suction filtration material pipes.

Technical Field

The invention relates to the technical field of suction filter washing, in particular to a filter cloth-free vacuum suction filter with a multistage countercurrent washing function.

Background

The filter cloth-free vacuum suction filter has the advantages of high solid-liquid separation efficiency, no sewage discharge, automatic control and the like, is widely applied to the solid-liquid separation of suspension in the industries of sugar manufacturing, pharmacy, chemical industry, papermaking, mineral separation, environmental protection and the like, and is mainly used for separating filter mud and filter juice from mud juice in the sugar cane manufacturing industry.

The existing filter cloth-free vacuum suction filter needs to be provided with a plurality of spraying devices respectively connected with a clean water source to complete washing work, and in order to recover soluble substances remained in filter mud as far as possible, the using amount of sprayed clean water is large, so that the hammering degree of filtrate is not high, and the subsequent material concentration cost is greatly improved. The countercurrent washing, namely washing the solid materials by washing liquid (clean water for primary washing) in a grading way, wherein the washing liquid and the materials to be washed move in opposite directions, the material flow direction sequentially goes from a first stage, a second stage and a third stage … to the last stage, the washing liquid (clean water) washes the materials from the last stage, and the separated filtrate is used as the washing liquid of the previous stage. The concentration difference of soluble solids in the washing liquid and the material is utilized to dissolve out more soluble matters in the material, the concentration of the dissolved matters in the washing liquid is improved, the filtrate with higher concentration is separated out by the first stage and then is used as the washing liquid of the next stage, after the washing for many times, the efficient utilization of the washing liquid can be achieved, and the water consumption is greatly reduced compared with the mode that each stage is washed by clean water. However, in this way, factors such as increased equipment investment and complex operation exist, and the comprehensive consideration is that the adoption of 3-5 grades is better.

The solid-liquid separation is carried out on the materials by a vacuum suction filter, and the filterability of the materials can be improved by adding a filter aid, heating and the like according to the characteristics of the suspended substance particles in the materials such as size, specific gravity, solid content and the like. The surface of a rotary drum of the vacuum suction filter is covered with a layer of porous filter plate, after the rotary drum suction filtration chamber is vacuumized, the rotary drum suction filtration chamber rotates to a material tank at the lower part, the surface of the rotary drum suction filtration chamber sucks materials, under the vacuum suction filtration action of the filter plate, suspended matters in the materials are deposited and coated on the surface of the filter plate to form a filter layer, the rotating speed of the rotary drum is adjusted, the filter layer with the thickness of 2-20mm can be formed on the surface of the rotary drum, and the liquid content and the brix in the filter layer determine the loss of target recovery matters in the filter layer, so that the key for improving the product recovery rate is to. By adopting a counter-current washing working mode, the technical problems of large amount of sprayed clean water and high cost of subsequent filtrate concentration existing in the prior spray washing of all levels by clean water can be well solved, but the technical problem of how to apply counter-current washing in the field of filter cloth-free vacuum suction filters is in the field.

Disclosure of Invention

The invention aims to provide a filter cloth-free vacuum suction filter with a multistage countercurrent washing function, which solves the problems in the prior art, reduces the water consumption of a filter washing layer of the filter cloth-free vacuum suction filter, improves the conversion degree of filtrate and reduces the subsequent material concentration cost.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a non-filter cloth vacuum suction filter with a multistage countercurrent washing function, which comprises a distribution disc rotationally connected with the side wall of a rotary drum of the non-filter cloth vacuum suction filter and an end shell fixedly arranged on the distribution disc, wherein a first high vacuum area, a second high vacuum area, a third high vacuum area, a fourth high vacuum area, a low vacuum area and a rest area are sequentially arranged on the distribution disc in the circumferential direction, the first high vacuum area, the second high vacuum area, the third high vacuum area, the fourth high vacuum area and the low vacuum area are all sector-shaped through holes arranged on the distribution disc and can be communicated with a transverse infusion pipeline in the rotary drum, and a first liquid outlet communicated with the first high vacuum area, a second liquid outlet communicated with the second high vacuum area and a third liquid outlet communicated with the third high vacuum area are arranged on the end shell, A fourth liquid outlet communicated with the fourth high vacuum region and a fifth liquid outlet communicated with the low vacuum region; a first spray pipe, a second spray pipe, a third spray pipe and a fourth spray pipe are arranged above the rotary drum, the first spray pipe corresponds to the second high-vacuum area, the second spray pipe corresponds to the third high-vacuum area, the third spray pipe and the fourth spray pipe both correspond to the fourth high-vacuum area, the third spray pipe is close to the third high-vacuum area, and the fourth spray pipe is close to the low-vacuum area;

the water outlet of the clear water storage tank is connected with the first spraying pipe, the first liquid outlet is connected with the water inlet of the first storage tank, the water outlet of the first storage tank is connected with the second spraying pipe, the second liquid outlet is connected with the water inlet of the second storage tank, the water outlet of the second storage tank is connected with the third spraying pipe, the third liquid outlet is connected with the water inlet of the third storage tank, the water outlet of the third storage tank is connected with the fourth spraying pipe, the fourth liquid outlet is connected with the water inlet of the fourth storage tank, and the fifth liquid outlet is connected with the water inlet of the fifth storage tank; the clean water storage tank is connected with the first spray pipe through a connecting pipe, the first storage tank is connected with the second spray pipe through a connecting pipe, the second storage tank is connected with the third spray pipe through a connecting pipe, and the third storage tank is connected with the fourth spray pipe through a connecting pipe.

Preferably, the first spray pipe, the second spray pipe, the third spray pipe and the fourth spray pipe are all provided with a plurality of spray headers, and the specific number of the spray headers is reasonably designed according to the axial length of the rotary drum, so that spray water or spray filtrate at each level can cover the adsorption filter layer on the axial surface of the rotary drum.

Preferably, the distribution plate is in dynamic seal with the rotary drum.

Preferably, the end shell is fixedly connected with a frame of the filter cloth-free vacuum suction filter through a connecting rod.

Preferably, a trough is arranged below the rotary drum, the bottom of the rotary drum can be immersed in materials in the trough, a stirring device is arranged in the trough, a scraping plate is arranged at one end of the trough, one end of the scraping plate is close to the surface of the rotary drum, and the distance between the scraping plate and the surface of the rotary drum is adjustable.

Preferably, the cylindrical surface of the rotary drum is provided with a stainless steel filter plate.

Preferably, the rotary drum comprises 12-24 suction chambers, the number of the infusion pipelines is the same as that of the suction chambers, the infusion pipelines correspond to the suction chambers one by one, and the suction chambers are communicated with the corresponding infusion pipelines through suction filtration area material pipes.

Compared with the prior art, the filter cloth-free vacuum suction filter with the multistage countercurrent washing function has the following technical effects:

the filter cloth-free vacuum suction filter with the multistage countercurrent washing function reduces the water consumption for washing the filter layer of the filter cloth-free vacuum suction filter, improves the conversion degree of the filtrate and reduces the subsequent material concentration cost. The filter cloth-free vacuum suction filter with the multistage countercurrent washing function treats the mud juice in a countercurrent washing mode, greatly reduces the water consumption of a washing filter layer, improves the material treatment capacity of the vacuum suction filter and the recovery rate of target recovery substances, and saves the concentration cost of the target recovery substances.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a first schematic structural diagram of a non-filter cloth vacuum suction filter with multi-stage counter-current washing function according to the present invention;

FIG. 2 is a schematic structural diagram of a second non-filter cloth vacuum suction filter with multi-stage countercurrent washing function according to the present invention;

FIG. 3 is a schematic structural view of a distribution plate in the filter cloth-free vacuum suction filter with multi-stage countercurrent washing function according to the present invention;

FIG. 4 is a schematic structural diagram of an end shell of a filter-cloth-free vacuum suction filter with multi-stage countercurrent washing function according to the present invention;

wherein: 1-end shell, 101-first high vacuum zone, 102-second high vacuum zone, 103-third high vacuum zone, 104-fourth high vacuum zone, 105-low vacuum zone, 106-rest zone, 108-first liquid outlet, 109-second liquid outlet, 110-third liquid outlet, 111-fourth liquid outlet, 112-fifth liquid outlet, 2-rotary drum, 201-suction filtration zone material pipe, 3-stirring device, 4-scraper, 5-clear water storage tank, 6-first storage tank, 7-second storage tank, 8-third storage tank, 9-fourth storage tank, 10-fifth storage tank, 11-vacuum pump, 12-material tank, 13-spray head, 14-distribution plate, 15-first spray pipe, 16-second spray pipe, 17-third spray pipe, 18-fourth shower.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

The invention aims to provide a filter cloth-free vacuum suction filter with a multistage countercurrent washing function, which solves the problems in the prior art, reduces the water consumption of a washing filter layer of the filter cloth-free vacuum suction filter, improves the filtrate conversion degree and reduces the subsequent material concentration cost.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1 to 4: the non-filter cloth vacuum suction filter with the multistage countercurrent washing function comprises a distribution disc 14 communicated with the side wall of a rotary drum 2 of the non-filter cloth vacuum suction filter and connected in a dynamic sealing mode and an end shell 1 fixedly arranged on the distribution disc 14, a rotary shaft of the rotary drum 2 is rotatably connected with a rack of the non-filter cloth vacuum suction filter through a bearing, and the end shell 1 is fixedly connected with the rack of the non-filter cloth vacuum suction filter through a connecting rod. The below of rotary drum 2 is provided with silo 12, and the bottom of rotary drum 2 can be arranged in the well material of silo 12, is provided with agitating unit 3 in the silo 12, and the one end of silo 12 is provided with scraper blade 4, and the contact of 4 one ends of scraper blade and the lateral wall of rotary drum 2, the foreign matter on the face of cylinder of rotary drum 2 can be scraped off to scraper blade 4. The cylindrical surface of the rotary drum 2 is provided with a stainless steel filter plate. The rotary drum 2 comprises 12-24 suction chambers, the number of the infusion pipelines is the same as that of the suction chambers, the infusion pipelines correspond to the suction chambers one by one, and the suction chambers are communicated with the corresponding infusion pipelines through a suction filtration area material pipe 201.

The distribution plate 14 is provided with a first high vacuum area 101, a second high vacuum area 102, a third high vacuum area 103, a fourth high vacuum area 104, a low vacuum area 105 and a rest area 106 in sequence in the circumferential direction, the first high vacuum area 101, the second high vacuum area 102, the third high vacuum area 103, the fourth high vacuum area 104 and the low vacuum area 105 are all fan-shaped through holes arranged on the distribution plate 14, a transverse liquid conveying pipeline in the rotary drum 2 can be communicated with the first high vacuum area 101, the second high vacuum area 102, the third high vacuum area 103, the fourth high vacuum area 104 and the low vacuum area 105 in sequence along with the rotation of the rotary drum 2, the end shell 1 is provided with a first liquid outlet 108 communicated with the first high vacuum region 101, a second liquid outlet 109 communicated with the second high vacuum region 102, a third liquid outlet 110 communicated with the third high vacuum region 103, a fourth liquid outlet 111 communicated with the fourth high vacuum region 104 and a fifth liquid outlet 112 communicated with the low vacuum region 105.

A first spray pipe 15, a second spray pipe 16, a third spray pipe 17 and a fourth spray pipe 18 are arranged above the rotary drum 2, the first spray pipe 15 is over against the side wall of the rotary drum 2 corresponding to the second high-vacuum region 102, the second spray pipe 16 is over against the side wall of the rotary drum 2 corresponding to the third high-vacuum region 103, the third spray pipe 17 and the fourth spray pipe 18 are both over against the side wall of the rotary drum 2 corresponding to the fourth high-vacuum region 104, the third spray pipe 17 is close to the third high-vacuum region 103, and the fourth spray pipe 18 is close to the low-vacuum region 105; all be provided with a plurality of shower 13 on first shower 15, second shower 16, third shower 17 and the fourth shower 18, the specific quantity of shower carries out reasonable design according to the axial length of rotary drum 2, specifically regards as the side wall surface that spray can cover rotary drum 2 as the standard with spray, guarantees that spray water or sprays each level of filtrating and can cover the adsorption filtration layer on the axial surface of rotary drum 2.

The water outlet of the clear water storage tank 5 is connected with a first spray pipe 15, a first liquid outlet 108 is connected with the water inlet of a first storage tank 6, the water outlet of the first storage tank 6 is connected with a second spray pipe 16, a second liquid outlet 109 is connected with the water inlet of a second storage tank 7, the water outlet of the second storage tank 7 is connected with a third spray pipe 17, a third liquid outlet 110 is connected with the water inlet of a third storage tank 8, the water outlet of the third storage tank 8 is connected with a fourth spray pipe 18, a fourth liquid outlet 111 is connected with the water inlet of a fourth storage tank 9, and a fifth liquid outlet 112 is connected with the water inlet of a fifth storage tank 10; a connecting pipe between the clear water storage tank 5 and the first spray pipe 15, a connecting pipe between the first storage tank 6 and the second spray pipe 16, a connecting pipe between the second storage tank 7 and the third spray pipe 17, and a connecting pipe between the third storage tank 8 and the fourth spray pipe 18 are respectively provided with a negative pressure pump, and the first storage tank 6, the second storage tank 7, the third storage tank 8, the fourth storage tank 9 and the fifth storage tank 10 are respectively connected with the vacuum pump 11 through pipelines.

The working process of the filter-cloth-free vacuum suction filter with the multistage countercurrent washing function in the embodiment is as follows:

firstly, the rotary drum 2 is rotated to operate, clean water is pre-stored in a clean water storage tank 5, a first storage tank 6, a second storage tank 7 and a third storage tank 8 when the clean water storage tank 5, the first storage tank 6, the second storage tank 7 and the third storage tank 8 are in an initial state, then the clean water in the clean water storage tank 5 is sprayed to a stainless steel filter plate of the rotary drum 2 through a spray head 13 on a first spray pipe 15, filtrate for dissolving out soluble solid matters in the filter layer enters the first storage tank 6 through a suction filtration area material pipe 201, a liquid conveying pipeline, a first high vacuum area 101 and a first liquid outlet 108 after the filter layer adsorbed on the corresponding surface of the rotary drum 2 is washed, then the filtrate for dissolving out the soluble solid matters in the filter layer is pumped out through a negative pressure pump and sprayed to the stainless steel filter plate of the rotary drum 2 through the spray head 13 on a second spray pipe 16, and the filtrate for dissolving out the soluble solid matters in the filter layer passes through the suction filtration area material pipe, The liquid conveying pipeline, the second high vacuum area 102 and the second liquid outlet 109 enter the second storage tank 7, then the filtrate in the second storage tank 7 is pumped out by a negative pressure pump and sprayed to the stainless steel filter plate of the rotary drum 2 through the spray header 13 on the third spray pipe 17, the filtrate of soluble solids in the dissolved filter layer enters the third storage tank 8 through the suction filtering area material pipe 201, the liquid conveying pipeline, the third high vacuum area 103 and the third liquid outlet 110 after washing the filter layer adsorbed on the corresponding surface of the rotary drum 2 under the suction action of the negative pressure in the third storage tank 8, then the filtrate negative pressure pump in the third storage tank 8 is pumped out and sprayed to the stainless steel filter plate of the rotary drum 2 through the spray header 13 on the fourth spray pipe 18, the filtrate of soluble solids in the dissolved filter layer enters the fourth storage tank 9 through the suction filtering area material pipe 201, the liquid conveying pipeline, the fourth high vacuum area 104 and the fourth liquid outlet 111 after washing the filter layer adsorbed on the corresponding surface of the rotary drum 2 under the suction action of the negative pressure in the fourth storage tank, filtrate filtered out when the material liquid is sucked in the material groove by the rotary drum enters the fifth storage tank 10 through a material pipe 201 of a filtering area, a liquid conveying pipeline, a low vacuum area 105 and a fifth liquid outlet 112 under the suction action of negative pressure in the fifth storage tank 10; to this end, the concentration of the filtrate in the fourth storage tank 9 and the fifth storage tank 10 is close, and the filtrate in the fourth storage tank 9 and the fifth storage tank 10 is mixed and then enters the subsequent treatment process.

In the description of the present invention, it should be noted that the terms "top", "bottom", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.