CN212594193U - Low-pressure filtering plate and filter press - Google Patents

Abstract

The utility model provides a low-pressure filtering plate and a filter press, wherein the low-pressure filtering plate comprises a lining plate, a filtering cloth and a diaphragm, and the two sides of the lining plate in the thickness direction are respectively a filtering side and a squeezing side; the lining plate is provided with an inwards concave filter cavity, a plurality of bosses arranged at the bottom of the filter cavity and a filtrate channel formed among the bosses on the filter side, the filter cloth is fixed on the filter side of the lining plate and covers the filter cavity, and the lining plate is provided with a feed hole and a liquid outlet hole which are communicated with the filter cavity; the welt is pressed the side and is opened the chamber that squeezes that is equipped with the indent, and the diaphragm is fixed and is squeezed the side at the welt and cover and squeeze the chamber, fixedly connected with on the welt with squeeze the joint that the chamber communicates. According to the filter press, the filter press is provided with the plurality of low-pressure filter plates which are arranged in the same direction, so that squeezing and filtering can be realized without arranging other filter plates with functions; in particular, after the low-pressure pressing medium is introduced into the pressing cavity through the pressing joint, the diaphragm can be bulged, so that the filtrate content in the filter residue is further reduced through low-pressure pressing.

Description

Low-pressure filtering plate and filter press

Technical Field

The utility model relates to a filtration equipment especially relates to a low pressure filters filter plate and installs the pressure filter of above-mentioned low pressure filtration filter plate.

Background

In some industries, low pressure filtration of materials is required to prevent the leaching of harmful substances that affect the quality or taste of the final product, such as syrup extraction from the mash. In the early stage, most manufacturers adopt a filter tank to filter the saccharified mash, but the filtering method has the defects of long filtering period, high filter residue moisture, difficult yield improvement and the like. In recent years, box-type filter plates are gradually used for filtering mash, so that the filtering period can be shortened, but the moisture content and yield of filter residues are not improved much; in addition, the van-type filter plates are required to be matched with other functional filter plates to be arranged at intervals and used together.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the utility model aims at providing a low pressure filters filter plate can realize filtering and squeezing, effectively reduces filter residue moisture and improves the yield.

In order to achieve the purpose, the utility model provides a low-pressure filtering plate, which comprises a lining plate, a filtering cloth and a diaphragm, wherein the two sides of the lining plate in the thickness direction are respectively a filtering side and a squeezing side; the filter cloth is fixed on the filtering side of the lining plate and covers the cavity bottom of the filtering cavity, and the lining plate is provided with a feeding hole communicated with the filtering cavity and a liquid outlet hole communicated with the filtrate channel; the lining plate is provided with an inwards concave squeezing cavity at the squeezing side, the diaphragm is fixed at the squeezing side of the lining plate and covers the squeezing cavity, and a squeezing joint communicated with the squeezing cavity is fixedly connected to the lining plate.

Furthermore, the lining plate is provided with a first sealing surface positioned on the outer periphery side of the filter cavity on the filter side, the lining plate is provided with a second sealing surface positioned on the outer periphery side of the press cavity on the press side, and the outer edge of the diaphragm is positioned on the outer side of the inner edge of the second sealing surface.

Furthermore, a circle of sealing ring is fixed on the periphery of the filter cloth, a circle of first annular groove is formed in the outer surface of the filtering side of the lining plate, the first annular groove is located at the outer edge of the cavity bottom of the filtering cavity, and the sealing ring is fixedly embedded in the first annular groove of the lining plate.

Furthermore, a circle of annular convex ribs are arranged on the inner surface of the diaphragm facing the lining plate, a circle of second annular groove is arranged on the outer surface of the pressing side of the lining plate, and the annular convex ribs of the diaphragm are fixedly embedded in the second annular groove of the lining plate.

Furthermore, the diaphragm is fixedly provided with a plurality of layers of damping wires on the outer peripheral side of the annular convex rib, and the plurality of layers of damping wires are distributed in parallel along the thickness direction of the liner plate.

Furthermore, the feed ports have two, distribute in the upper and lower both ends department of welt length direction one side, the play liquid hole has two, distributes in the upper and lower both ends department of welt length direction opposite side.

Furthermore, a feeding branch hole with one end extending to the feeding hole is formed in the feeding hole of the lining plate, and the other end of the feeding branch hole extends to the annular cavity wall of the filter cavity.

Furthermore, the lining plate is provided with a liquid outlet branch hole with one end extending to the liquid outlet hole and a plurality of liquid outlet small holes with one ends extending to the filtrate channel along the thickness direction of the lining plate at the liquid outlet hole, and the other ends of the plurality of liquid outlet small holes extend to the liquid outlet branch hole.

Furthermore, set up in the welt and all extend along welt thickness direction and one end and extend to the branch hole that squeezes of squeezing the chamber and the several squeezes the other end in a hole and all extends to squeezing the hole along the hole that squeezes that welt length direction extends, the tip in the hole that squeezes extends to the lateral surface of welt, squeeze joint threaded connection in squeezing the hole.

The utility model also provides a pressure filter has the frame, install the polylith in the frame as above the low pressure filter plate, polylith low pressure filter plate syntropy is piled up and is arranged.

As mentioned above, the utility model relates to a low pressure filters filter plate and pressure filter has following beneficial effect:

in the application, the filtering side of the low-pressure filtering plate is used for filtering, and the squeezing side of the low-pressure filtering plate is used for squeezing, so that a plurality of low-pressure filtering plates which are stacked in the same direction are arranged in the filter press, squeezing and filtering can be realized, and no other functional filtering plates are required to be arranged; particularly, this application squeezes the back through squeezing the joint to letting in low pressure in squeezing the chamber and squeeze the medium, and the diaphragm can be bulgy, and the material in the filter chamber in another low pressure filter plate is squeezed to the diaphragm of bulgy, squeezes through the low pressure and further reduces the filtrating content in the filter residue to effectively reduce filter residue moisture and improve the yield.

Drawings

Fig. 1 is a front view of a low pressure filter plate according to the present application.

Fig. 2 is a right side view of fig. 1.

Fig. 3 is a sectional view taken along line a-a of fig. 1.

Fig. 4 is an enlarged view of circle B of fig. 3.

Fig. 5 is a sectional view taken along line C-C of fig. 1.

Fig. 6 is a rear view of a low pressure filter plate according to the present application.

Fig. 7 is a sectional view taken along line D-D of fig. 6.

Fig. 8 is a sectional view taken along line E-E of fig. 6.

Fig. 9 is a schematic view of the arrangement of a plurality of low pressure filter plates in the filter press of the present application.

Description of the element reference numerals

10 lining board

101 filter chamber

102 boss

103 filtrate channel

104 feed hole

105 liquid outlet holes

106 press chamber

107 first sealing surface

108 second sealing surface

109 first annular groove

110 second annular groove

111 feed branch hole

112 liquid outlet branch hole

113 liquid outlet hole

114 press hole

115 press branch hole

116 external embedded groove

20 filter cloth

30 diaphragm

301 annular convex rib

302 damping wire

303 hole ring

40 Press Joint

50 sealing ring

60 filter chamber

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the drawings of the present application are only used to match the contents disclosed in the specification, so as to be known and read by those skilled in the art, and not to limit the practical limitations of the present invention, so that the present application does not have any technical significance, and any modification of the structure, change of the ratio relationship, or adjustment of the size should still fall within the scope of the present application without affecting the function and the achievable purpose of the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered as the scope of the present invention without substantial changes in the technical content.

The application provides a pressure filter and be used for low pressure of this pressure filter to filter the filter plate, and the pressure filter has the frame, installs the polylith in the frame and piles up the low pressure filter plate that arranges along the thickness direction syntropy of low pressure filter plate, as shown in figure 9. For convenience of description, the directions in the following examples are defined as follows: defining the length direction of the low-pressure filtering plate as the left-right direction, the thickness direction of the low-pressure filtering plate as the front-back direction, and the height direction of the low-pressure filtering plate as the up-down direction; therefore, in the view shown in fig. 1, the left and right sides of the paper surface are the left and right directions, respectively, the front and back surfaces of the paper surface are the front and back directions, respectively, and the upper and lower sides of the paper surface are the upper and lower directions, respectively.

As shown in fig. 1 to 3, the low pressure filter plate according to the present invention includes a lining plate 10, a filter cloth 20, and a diaphragm 30, wherein a front side of the lining plate 10 is a pressing side, a rear side of the lining plate 10 is a filtering side, the lining plate 10 has a solid plate structure, and an outer peripheral contour of the lining plate 10 may be a square, a rectangle, or a circle, and the structure of the low pressure filter plate will be described below by taking the outer peripheral contour of the lining plate 10 as an example. The filtering side of the lining plate 10 is a non-smooth side, and the lining plate 10 is provided with a filtering cavity 101 which is concave forwards, a plurality of bosses 102 arranged at the bottom of the filtering cavity 101 and a filtrate channel 103 formed among the bosses 102 on the filtering side; the boss 102 is in a small circular truncated cone shape, and the shape, size and arrangement mode of the boss 102 can be determined according to the filtering requirement; the filter cloth 20 is fixed on the filtering side of the lining plate 10 and covers the cavity bottom of the filtering cavity 101, so that the plurality of bosses 102 and the filtrate channel 103 are covered by the filter cloth 20, but the filter cloth 20 does not cover the annular cavity wall of the filtering cavity 101, the lining plate 10 is provided with a feed hole 104 communicated with the filtering cavity 101 and a liquid outlet hole 105 communicated with the filtrate channel 103, the feed hole 104 is used for feeding materials into the filtering cavity 101, and the liquid outlet hole 105 is used for discharging filtrate in the filtrate channel 103. The pressing side of the lining plate 10 is a smooth side, the pressing side of the lining plate 10 is provided with a pressing cavity 106 which is concave backwards, the diaphragm 30 is fixed on the pressing side of the lining plate 10 and covers the pressing cavity 106, so the pressing cavity 106 is also formed between the lining plate 10 and the diaphragm 30, the diaphragm 30 is made of plastic or plastic and has certain elasticity, and the lining plate 10 is fixedly connected with a pressing joint 40 communicated with the pressing cavity 106.

After the low-pressure filter plates are installed in the filter press, as shown in fig. 9, a plurality of low-pressure filter plates are arranged side by side in the front-rear direction in the same direction and are abutted against each other. Therefore, a filter chamber 60 is formed between two adjacent low-pressure filter plates in the front and back, namely: the diaphragm 30 of the following low-pressure filter plate covers the filter chamber 101 on the rear side of the preceding low-pressure filter plate to form the filter chamber 60. The water-containing material enters a feed hole 104 on a low-pressure filter plate through a pipeline in a filter press, and enters a filter cavity 101 at the rear side of the low-pressure filter plate through the feed hole 104, particles with the particle pore size larger than that of the filter cloth 20 in the filter cavity 101 are intercepted in the filter cavity 101 to form filter residues, and filtrate with the particle pore size smaller than that of the filter cloth 20 in the filter cavity 101 penetrates through the filter cloth 20 and is sequentially discharged through a filtrate channel 103 and a liquid outlet 105. After the filtration is finished, the low-pressure squeezing medium is introduced into the squeezing cavity 106 through the squeezing joint 40, the membrane 30 is expanded, the expanded membrane 30 squeezes filter residues in the filtering cavity 101 in the low-pressure filtering plate on the front side, the content of filtrate in the filter residues is further reduced through low-pressure squeezing, and squeezed filtrate is still discharged through the filtrate channel 103 and the liquid outlet hole 105. Therefore, the front and back both sides of the low pressure filter plate that this application relates to are the side of squeezing that is used for squeezing respectively and are used for filterable filtration side, and the low pressure filters the filter plate and has simultaneously and filter and squeeze the function, and the low pressure that the configuration polylith syntropy piles up the arrangement in the pressure filter filters the filter plate and can realize squeezing and filtering, and need not dispose other function filter plates, and the filter plate can also effectively reduce filter residue moisture and improve the yield by low pressure simultaneously.

Further, as shown in fig. 1, 3 and 6, the liner plate 10 is provided with a first sealing surface 107 on the outer peripheral side of the filter chamber 101 on the filter side, and the liner plate 10 is provided with a second sealing surface 108 on the outer peripheral side of the press chamber 106 on the press side; when two low-pressure filter plates are abutted in the same direction, as shown in fig. 9, the first sealing surface 107 on the rear side of the previous low-pressure filter plate is in sealing fit with the second sealing surface 108 on the front side of the next low-pressure filter plate, so that the sealing between the two adjacent low-pressure filter plates in the front and the back is realized, and the sealing performance of the filter chamber 60 is ensured. Preferably, as shown in fig. 1, the peripheral edge rate around the diaphragm 30 is higher than the peripheral edge rate around the second sealing surface 108 on the lining board 10, or the peripheral edge of the diaphragm 30 is located outside the peripheral edge of the second sealing surface 108, which is beneficial to improving the sealing effect between two adjacent front and back low-pressure filtering plates, and the low-pressure filtering plates are sealed at the filtering side of the lining board 10 by the peripheral edge of the diaphragm 30, so that the sealing ring is not arranged at the filtering side.

Further, the fixing structure between the filter cloth 20 and the liner 10 is preferably: as shown in fig. 3 and 4, a ring of sealing ring 50 is fixed on the periphery of the filter cloth 20, a ring of first annular groove 109 is arranged on the outer surface of the lining plate 10 on the filtering side, the first annular groove 109 is positioned at the outer edge of the cavity bottom of the filtering cavity 101, and the sealing ring 50 is fixedly embedded in the first annular groove 109 of the lining plate 10, thereby fixing the filter cloth 20 on the filtering side of the lining plate 10, and further realizing that the filter cloth 20 covers the cavity bottom of the filtering cavity 101 but does not cover the annular cavity wall of the filtering cavity 101. The filter cloth 20 is attached to the bottom of the filter cavity 101, and the filter cavity 101 is a concave structure recessed forward, so the filter cloth 20 is a sinking structure sinking forward. The fixing structure between the diaphragm 30 and the liner plate 10 is preferably as follows: as shown in fig. 3 and 4, the inner surface of the diaphragm 30 facing the lining plate 10 is provided with a ring of annular ribs 301, the outer surface of the lining plate 10 on the pressing side is provided with a ring of second annular grooves 110 located on the outer peripheral side of the pressing chamber 106, and the annular ribs 301 of the diaphragm 30 are fixedly embedded in the second annular grooves 110 of the lining plate 10, thereby fixing the diaphragm 30 on the pressing side of the lining plate 10. Preferably, two layers of damping wires 302 arranged in tandem are fixedly arranged on the outer periphery of the annular rib 301 of the diaphragm 30, and the damping wires 302 play roles of sealing and preventing falling. The diaphragm 30 having the annular rib 301 and the two layers of the damper wire 302 is an integrally formed member, that is, the annular rib 301 integrally extends rearward and straightly from the rear side surface of the diaphragm 30, and the damper wire 302 integrally extends outward from the outer periphery of the annular rib 301.

Further, as shown in fig. 1 and 6, the two feed holes 104 are distributed at the upper and lower ends of the right side of the lining plate 10, and the two exit holes 105 are distributed at the upper and lower ends of the left side of the lining plate 10. Thus, two inlet openings 104 and two outlet openings 105 are distributed at the four corners of the lining panel 10. Further, as shown in fig. 1, the diaphragm 30 is provided with two ring holes 303 at two feeding holes 104 and two liquid outlet holes 105, the pressing side of the lining plate 10 is provided with outer embedded grooves 116 at the two feeding holes 104 and the two liquid outlet holes 105, the four ring holes 303 of the diaphragm 30 are respectively buckled on the outer embedded grooves 116 at the four corners of the pressing side of the lining plate 10, and the fixing effect between the diaphragm 30 and the lining plate 10 is further improved.

Further, the communication structure between the feeding hole 104 and the filter cavity 101 on the lining plate 10 is preferably: as shown in fig. 6 and 7, each of the feeding holes 104 in the lining plate 10 is provided with a feeding branch hole 111, one end of the feeding branch hole 111 extends to the feeding hole 104 and is communicated with the feeding hole, and the other end of the feeding branch hole 111 extends to the annular wall of the filtering cavity 101 and is communicated with the annular wall, so that the feeding branch hole 111 is only communicated with the filtering side of the lining plate 10 and is not communicated with the pressing side of the lining plate 10; during feeding, the material sequentially enters the filter cavity 101 through the feeding hole 104 and the feeding branch hole 111, and the material does not pass through the filter cloth 20 during feeding.

Further, the communication structure between the liquid outlet holes 105 and the filtrate channels 103 on the lining plate 10 is preferably: as shown in fig. 6 and 8, the lining plate 10 is provided with a liquid outlet branch hole 112 at the liquid outlet hole 105, one end of which extends to the liquid outlet hole 105, and a plurality of liquid outlet small holes 113 which extend forwards and backwards along the thickness direction of the lining plate 10, the rear ends of the plurality of liquid outlet small holes 113 extend backwards to the filtrate channel 103 at the bottom of the filter cavity 101, the front ends of the plurality of liquid outlet small holes 113 extend forwards to the liquid outlet branch hole 112, the liquid outlet branch hole 112 is communicated with the liquid outlet hole 105, so that the liquid outlet small holes 113 and the liquid outlet branch hole 112 are only communicated with the filtering side of the lining plate 10 and are not communicated with the squeezing side of the lining plate 10; when the liquid is discharged, the filtrate passing through the filter cloth 20 is discharged through the filtrate channel 103, the small liquid outlet holes 113, the branch liquid outlet holes 112 and the liquid outlet holes 105 in sequence.

Further, the connection structure between the press cavity 106 and the press joint 40 on the liner 10 is preferably: as shown in fig. 1 and 5, a press hole 114 extending left and right along the length direction of the liner plate 10 and a plurality of press branch holes 115 extending front and back along the thickness direction of the liner plate 10 are formed in the liner plate 10, the front ends of the plurality of press branch holes 115 extend forward to the press cavity 106, the rear ends of the plurality of press branch holes 115 extend backward to the press hole 114, the outer end portion of the press hole 114 extends outward to the outer side surface of the liner plate 10, the press joint 40 is provided with a self-tapping coarse thread and a seal ring 50 and is screwed in the press hole 114, and the press joint 40 is communicated with only the press side of the liner plate 10 and is not communicated with the filter side of the liner plate 10.

In conclusion, all materials of the low-pressure filtering plate with the structure meet the requirements of corrosion resistance, sanitation and temperature resistance required by filtering materials, and the low-pressure filtering plate can realize the functions of filtering, low-pressure filter pressing and washing. During filtering, the material enters the filter cavity 101 through the feeding hole 104 and the feeding branch hole 111 in sequence, and the filtrate in the filter cavity 101 penetrating through the filter cloth 20 is discharged through the filtrate channel 103, the small liquid outlet hole 113, the liquid outlet branch hole 112 and the liquid outlet hole 105 in sequence. During low-pressure filter pressing, a low-pressure pressing medium is introduced into the pressing cavity 106 through the pressing joint 40, and the diaphragm 30 is expanded, so that filter residues in the filtering cavity 101 in another low-pressure filtering plate are pressed, and filtrate in the filter residues is discharged. During washing, a washing medium (such as clean water) enters the filter cavity 101 through the feeding hole 104 and the feeding branch hole 111 in the same feeding direction, so as to wash materials in the filter cavity 101, and waste liquid after washing is discharged sequentially through the filtrate channel 103, the liquid outlet small hole 113, the liquid outlet branch hole 112 and the liquid outlet hole 105. During washing, a pressure medium can be introduced into the squeezing cavity 106 to realize washing under pressure, so that failure caused by washing short circuit due to filter residue layer rupture is prevented.

To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. The utility model provides a low pressure filters filter plate, includes welt (10), filter cloth (20) and diaphragm (30), its characterized in that: the two sides of the lining plate (10) in the thickness direction are respectively a filtering side and a pressing side; the filter cloth (20) is fixed on the filtering side of the lining plate (10) and covers the cavity bottom of the filtering cavity (101), and the lining plate (10) is provided with a concave filtering cavity (101), a plurality of bosses (102) arranged at the cavity bottom of the filtering cavity (101) and a filtrate channel (103) formed among the bosses (102) on the filtering side; the lateral opening that squeezes of welt (10) is equipped with the indent squeezes chamber (106) squeezing the side, diaphragm (30) are fixed and are squeezed the side at welt (10) and cover and squeeze chamber (106), fixedly connected with squeezes joint (40) with squeezing chamber (106) intercommunication on welt (10).

2. The low pressure filter plate according to claim 1, wherein: the lining plate (10) is provided with a first sealing surface (107) located on the outer periphery side of the filtering cavity (101) on the filtering side, the lining plate (10) is provided with a second sealing surface (108) located on the outer periphery side of the pressing cavity (106) on the pressing side, and the outer edge of the diaphragm (30) is located on the outer side of the inner edge of the second sealing surface (108).

3. The low pressure filter plate according to claim 1, wherein: the periphery of filter cloth (20) is fixed with round sealing washer (50), welt (10) are equipped with round first ring channel (109) on the surface of filtering the side, and this first ring channel (109) are located the outer edge at filter chamber (101) chamber bottom, sealing washer (50) are embedded in first ring channel (109) of welt (10) admittedly.

4. The low pressure filter plate according to claim 1, wherein: the diaphragm (30) is equipped with round annular protruding muscle (301) on the internal surface towards welt (10), welt (10) are equipped with round second annular groove (110) on the surface of squeezing the side, the annular protruding muscle (301) of diaphragm (30) are inlayed admittedly in the second annular groove (110) of welt (10).

5. The low pressure filter plate according to claim 4, wherein: the diaphragm (30) is fixedly provided with a plurality of layers of damping wires (302) on the outer peripheral side of the annular convex rib (301), and the plurality of layers of damping wires (302) are distributed in parallel along the thickness direction of the lining plate (10).

6. The low pressure filter plate according to claim 1, wherein: the two feed holes (104) are distributed at the upper end and the lower end of one side of the length direction of the lining plate (10), and the two liquid outlet holes (105) are distributed at the upper end and the lower end of the other side of the length direction of the lining plate (10).

7. The low-pressure filter plate according to claim 1 or 6, wherein: a feeding branch hole (111) with one end extending to the feeding hole (104) is formed in the position of the feeding hole (104) of the lining plate (10), and the other end of the feeding branch hole (111) extends to the annular cavity wall of the filter cavity (101).

8. The low-pressure filter plate according to claim 1 or 6, wherein: the lining plate (10) is provided with a liquid outlet branch hole (112) with one end extending to the liquid outlet hole (105) and a plurality of liquid outlet small holes (113) with one end extending to the filtrate channel (103) along the thickness direction of the lining plate (10) at the liquid outlet hole (105), and the other ends of the plurality of liquid outlet small holes (113) extend to the liquid outlet branch hole (112).

9. The low pressure filter plate according to claim 1, wherein: set up in welt (10) and all extend along welt (10) length direction and one end extends to the branch hole (115) that squeezes of squeezing chamber (106) and several along welt (10) thickness direction and squeeze hole (115), the other end that the several squeezed hole (115) all extends to and squeezes hole (114), the tip that squeezes hole (114) extends to the lateral surface of welt (10), squeeze and connect (40) threaded connection in squeezing hole (114).

10. A filter press having a frame, characterized by: the frame is provided with a plurality of low-pressure filter plates as claimed in any one of claims 1 to 9, and the low-pressure filter plates are stacked in the same direction.

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