JP3710046B2 - Filter plate clamping device in filter press - Google Patents

Description

この式から、シリンダー１２のピストンロッド１３の伸張により、それぞれのリンク杆１４、１５、１６が押圧されてリンク杆１４、１５、１６がなす角度θ及びαが零に近づくと、式（３）の分母が０に近づいて、ムーバブルヘッド５にかかる推力Ｆが大きくなる。したがって、小さなピストンロッド１３の力Ｒでも大きなムーバブルヘッド５を押す力Ｆを得ることができるもので、シリンダー１２が小型となり、油圧シリンダーでも良いが、電動シリンダーまたはエアーシリンダーでも適応できるものである。
【００１２】
例えば、ピストンロッド１３の推力Ｒ＝５０ｔｏｎ、ムーバブルヘッド５の垂直面に対してリンク杆１４のなす角度α＝１０°、ムーバブルヘッド５の垂直面に対してリンク杆１４のなす角度θ＝１０°と仮定すると、（３）式より、

したがって、推力Ｒ＝５０ｔｏｎにて、ろ板群３…の締付力２Ｆ＝８０７ｔｏｎとなり、シリンダーの圧力が増圧されて約１６倍の締付圧が得られるものである。
【００１３】
【発明の効果】
この発明は上記のように構成してあり、複数のリンク杆を組合せることにより、シリンダーの小さな力をろ板群の大きな締付力に変換できるものである。即ち、従来のリンク機構を用いてろ板を開閉させる装置にあっては、フイルタープレスの大型多室が困難で、構造も複雑であった。また、フイルタープレスを大型多室化し、ろ板群の締付けに油圧シリンダーを利用した装置にあっては、設置台数が多くなると、使用する油量が多くなり、やはり安全面上の問題があったものであるが、この発明の締付け装置にあっては、シリンダーのピストンロッドに枢着したリンク杆の先端部と、ストッパーとムーバブルヘッドの両側端部にそれぞれ枢着したリンク杆の先端部を互いに連結したので、ストッパーに設けたシリンダーのピストンロッドの推力から増圧されたムーバブルヘッドの押圧力が得られるものであり、シリンダーが小型化されて安全面の改善が可能となり、枠漏れのないシール面とすることもできるものである。
【図面の簡単な説明】
【図１】この発明に係る締付装置を用いたフイルタープレスの、ろ板群を開板した状態を示す側面図である。
【図２】この発明に係る締付け装置の平面視の概念図である。
【図３】この発明に係る係合装置を配設したストッパーの背面図である。
【符号の説明】
１ フレーム
２ レール
３ ろ板
４ ストッパー
５ ムーバブルヘッド
１２ シリンダー
１３ ピストンロッド
１４、１５、１６ リンク杆
Ｆ ムーバブルヘッド５の押圧力
Ｒ ピストンロッド１３の推力
α レール２の前後方向に対してリンク杆１５、１６のなす角度
θ ムーバブルヘッド５の幅方向に対してリンク杆１４のなす角度[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a multi-chamber filter press tightening apparatus in which a large number of filter plates are arranged in parallel, and in particular, tightening of a filter press that uses a link mechanism to obtain a large thrust capable of withstanding the squeezing pressure with a small cylinder thrust. Relates to the device.
[0002]
[Prior art]
Conventionally, as a filter press opening and closing device using a link mechanism, four sets of links are provided between a movable wall provided at one end of a filter plate group and a frame, and a vertical and horizontal connecting link for interlocking these links is provided. An apparatus that locks the filter chamber between the filter plates by providing a cylinder is known as described in, for example, Japanese Patent Publication No. 7-45003. In addition, a drive chain is stretched along the rail that supports the filter plate group so that it can be used for a multi-room large filter press, and the traveling portion in the opposite direction of this drive chain is connected to a stopper to provide a filter plate. A device for simultaneously opening and closing the group from both sides and further tightening the closed filter plate group with a short cylinder has been proposed by the applicant of the present invention as described in, for example, Japanese Patent Publication No. 2-11284. .
[0003]
[Problems to be solved by the invention]
However, in the conventional filter press that uses a link mechanism to tighten the filter plate, the structure in which many links are combined is complicated, and the length of the link is set so that it cannot be bent in order to lock the filter chamber. It was difficult to set the thickness, and there was a risk of seal leakage between the filter plates. In a multi-room large filter press, the link mechanism is large and it is difficult to increase the size of the multi-room. The latter filter press can be enlarged in multiple chambers, but a large hydraulic cylinder must be installed to seal a large number of closed filter plates with a short cylinder. It was necessary to use a large pressing force. Therefore, a large volume of oil is required, and handling as a dangerous substance is troublesome. The present invention is an improvement of the apparatus proposed by the applicant, and an object thereof is to provide an apparatus that generates a large force with a small-capacity cylinder using a link mechanism.
[0004]
[Means for Solving the Problems]
The gist of the present invention is that a large number of filter plates are arranged in parallel on rails bridged between frames, a stopper having a traveling means is provided at the rear end of the filter plate group, and an engaging device for the rail is arranged on the stoppers. In addition, a filter head in which a movable head is disposed between the stopper and the filter plate group, and a tightening device for the movable head is provided on the stopper, the link rod is pivoted on the piston rod of the cylinder sandwiched between the stoppers. The tip of the link rod and the tip of the link rod pivotally connected to the stopper and the side end of the movable head are connected to each other in a freely rotating manner, and increased from the thrust of the piston rod of the cylinder provided on the stopper. A pressing force of the pressed movable head is generated to tighten the filter plate group.
[0005]
Specifically, in the above-described tightening device, a pair of link rods are pivotally attached to a piston rod of a cylinder clamped on the central vertical line of the stopper, and link rods are pivoted to the side ends of both sides of the stopper and the movable head. At the same time, the distal ends of the link rods provided on the left and right sides and the distal ends of the pair of link rods pivotally attached to the piston rod are rotatably connected to each other, and this clamping device is connected between the stopper and the movable head. It is arranged at the top and bottom, and the movable head is pressurized and pressed from the four corners. In addition, the tightening device pivotally attaches a pair of link rods to the piston rod of the cylinder clamped on the center horizontal line of the stopper, and pivotally attaches the link rods to the upper and lower side ends of the stopper and the movable head, The top end of each of the link rods provided above and below and the end of the pair of link rods pivotally attached to the piston rod are rotatably connected to each other, and this clamping device is disposed on the left and right between the stopper and the movable head. You may do it.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The device according to the present invention is configured as described above, and while the stopper is traveling toward the filter plate, the filter plates arranged in parallel on the rail are sequentially closed from the outside, and then the stopper is locked to the rail to filter the plate. Stop group retreat. Next, when the piston rod of the cylinder provided on the stopper is extended and the rear end of the link rod pivotally attached to the piston rod is moved in the direction of the movable head, the tip side of the link rod is located on the side of the stopper and the movable head. Press the tip of the link rod pivotally attached to each end to the side of the rail, move the movable head pivoted to the rear end of the link rod to the filter plate side, tighten the filter plate group, and Seal between the filter plates with a large thrust to withstand.
[0007]
【Example】
The filter press according to the present invention will be described in detail with reference to the drawings. First, in FIG. 1, reference numeral 1 denotes a frame erected in the front-rear direction, on a pair of rails 2 and 2 bridged between the frames 1 and 1. A large number of filter plates 3 are arranged in parallel, and a stopper 4 is disposed at the end of the filter plate group 3... And a movable head 5 is slidably arranged in parallel between the stopper 4 and the filter plate group 3. And the filter plate group 3 and the movable head 5 are loosely connected with a chain (not shown), and when the filter plate 3 at the end is moved backward, the filter plate group 3 is opened sequentially. A predetermined interval is provided between the filter plates 3 and 3. Reference numeral 6 denotes a drive chain that is wound endlessly on sprockets 7 and 7 provided on the upper portions of the front and rear frames 1 and 1, and is extended along the rail 2. One end of the drive chain 6 is connected to an appropriate position of the stopper 4, and the drive chain 6 is rotated by a drive unit 8 linked to one sprocket 7 so that the stopper 4 moves on the rail 2. It is. Reference numeral 9 is a filter cloth drive shaft, which is a known filter cloth traveling device suspended between the filter plates 3 and 3, reference numeral 10 is a washing water pipe for the filter cloth, and reference numeral 11 is a filtrate receiving tray.
[0008]
Next, the tightening device of the filter plate group 3... Will be described in detail with reference to FIG. 2. The cylinder 12 is horizontally held on the central perpendicular of the stopper 4, and a pair of pistons 13 of the cylinder 12 is paired with the piston rod 13. The base ends of the link rods 14 and 14 are pivotally attached. In addition, link rods 15 and 16 having rear end portions pivoted to the side end portions on both sides of the stopper 4 and the movable head 5 are provided symmetrically, and the tip portions of the link rods 15 and 16 provided on the left and right sides are provided. The distal ends of a pair of link rods 14 pivotally attached to the piston rod 13 are rotatably connected to each other, and this fastening device is disposed between the stopper 4 and the movable head 5 in the vertical direction. In this tightening device, the cylinder 12 is disposed on the center horizontal line of the stopper 4, and the pair of link rods 14, 14 pivotally attached to the piston rod 13 of the cylinder 12 are connected to the top and bottom of the stopper 4 and the movable head 5. It is also possible to connect to the link rods 15 and 16 pivotally attached to the side end portions of this, and to dispose the fastening device symmetrically between the stopper 4 and the movable head 5. Then, the piston rod 13 of the cylinder 12 is extended, the link rod 14 pivotally attached to the piston rod 13 is pressed, and the distal ends of the link rods 15 and 16 connected to the distal ends of the link rod 14 are connected to the side surface of the rail 2. The movable head 5 is moved to the filter plate 3 side at the rear end of the link rod 16, and the filter plate group 3 is tightened.
[0009]
The engagement device provided in the stopper 4 will be described in detail with reference to FIG. 3. Square plate-like locks 17 and 17 are suspended from both shoulders of the stopper 4 so as to be swingable, and are pivotally attached to the back surface of the stopper 4. The piston rod 19 of the electric cylinder 18 is connected to the intermediate portion of the lock 17. The piston rod 19 is expanded and contracted to rotate the lock 17 to the side surface of the stopper 4 and to retract the stopper 4 to the back surface by operating the electric cylinder 18. The rail block 20 is fixed to the rail 2 at a position corresponding to the stopper 4 where the filter plate group 3 is closed, and the lock 17 is rotated to be engaged with the rail block 20 so that the stopper 4 moves backward. It is trying to prevent.
[0010]
Next, means for applying a large thrust to the movable head 5 with the thrust of the small cylinder 12 using a link mechanism in which a plurality of link rods 14, 15, 16 are combined will be described.
(1) When the thrust of the piston rod 13 of the cylinder 12 is R, the component force of the link rod 14 pivotally attached to the piston rod 13 is x, and the angle formed by the link rod 14 with respect to the vertical surface of the movable head 5 is θ.
From the suspension of the force at the center, x × sin θ = R / 2, x × cos θ = P
From both equations, P / cos θ × sin θ = R / 2, and P × tan θ = R / 2.
Is guided. Therefore,
P = R / (2 × tan θ) (1)
[0011]
(2) The link rods 15 and 16 are pivotally attached to both end portions of the stopper 4 and the movable head 5 and the tip portions thereof are rotatably connected to each other. , 16 is the angle α, the component force x of the link rod 14 pivotally attached to the piston rod 13 is P, the force pressing the link rods 15 and 16 against the rail 2 side is P, and the component force y of the link rods 15 and 16 is the stopper. 4 and the thrust applied to the movable head 5 is F,
From the suspension of the component force y of the side link rods 15 and 16,
y × sin α = P / 2, y × cos α = F
From both equations, F / cos α × sin α = P / 2, and F × tan α = P / 2.
Is guided. Therefore,
F = P / (2 × tan α) (2)
(3) Substituting equation (1) into equation (2) above,
The thrust F applied to the movable head 5 is

From this equation, when the link rods 14, 15, 16 are pressed by the extension of the piston rod 13 of the cylinder 12 and the angles θ and α formed by the link rods 14, 15, 16 approach zero, the equation (3) , The denominator approaches 0, and the thrust F applied to the movable head 5 increases. Accordingly, the force F that pushes the large movable head 5 can be obtained even with the force R of the small piston rod 13, and the cylinder 12 can be reduced in size and may be a hydraulic cylinder, but can also be applied to an electric cylinder or an air cylinder.
[0012]
For example, the thrust R of the piston rod 13 is 50 ton, the angle α = 10 ° formed by the link rod 14 with respect to the vertical surface of the movable head 5, and the angle θ = 10 ° formed by the link rod 14 with respect to the vertical surface of the movable head 5. Assuming that from Equation (3)

Therefore, at the thrust R = 50 ton, the tightening force 2F = 807 ton of the filter plate group 3... Is obtained, and the cylinder pressure is increased to obtain a tightening pressure of about 16 times.
[0013]
【The invention's effect】
The present invention is configured as described above. By combining a plurality of link rods, a small cylinder force can be converted into a large clamping force of the filter plate group. That is, in a device for opening and closing a filter plate using a conventional link mechanism, a large-scale multi-chamber of a filter press is difficult and the structure is complicated. In addition, in a device that uses a large number of filter presses and a hydraulic cylinder to tighten the filter plate group, as the number of installed units increases, the amount of oil to be used increases, which also causes safety problems. However, in the tightening device of the present invention, the tip of the link rod pivotally attached to the piston rod of the cylinder and the tip of the link rod pivotally attached to the both ends of the stopper and the movable head are connected to each other. Since it is connected, the pressing force of the movable head increased from the thrust of the piston rod of the cylinder provided in the stopper can be obtained, the cylinder can be downsized and safety can be improved, and there is no frame leakage seal It can also be a surface.
[Brief description of the drawings]
FIG. 1 is a side view showing a state in which a filter plate group is opened in a filter press using a clamping device according to the present invention.
FIG. 2 is a conceptual view in plan view of the tightening device according to the present invention.
FIG. 3 is a rear view of a stopper provided with an engagement device according to the present invention.
[Explanation of symbols]
1 Frame 2 Rail 3 Filter plate 4 Stopper 5 Movable head 12 Cylinder 13 Piston rods 14, 15, 16 Link rod F Pushing force R of the movable head 5 Piston rod 13 thrust α Link rod 15 with respect to the longitudinal direction of the rail 2 Angle θ formed by 16 Angle formed by link rod 14 with respect to the width direction of movable head 5

Claims (3)

A large number of filter plates (3) are arranged in parallel on a rail (2) bridged between the frames (1, 1), and a stopper (4) having traveling means is provided at the rear end of these filter plate groups (3 ...). The stopper (4) is provided with an engaging device for the rail (2), and a movable head (5) is provided between the stopper (4) and the filter plate group (3 ...). In the filter press in which the fastening device of (5) is provided on the stopper (4), the link rod (14) is pivotally attached to the piston rod (13) of the cylinder (12) clamped on the stopper (4). The tip of the link rod (14) and the tip of the link rod (15, 16) pivotally attached to the side end of the stopper (4) and the movable head (5) are connected to each other so as to be rotatable. 4) Piping of the cylinder (12) provided in The pressing force F = R / (4 × tan θ × tan α) of the movable head (5) increased from the thrust R of the ton rod (13) is generated, and the filter plate group (3) is tightened. A filter plate clamping device in a filter press.
[Where θ is the angle formed by the link rod (14) with respect to the width direction of the movable head (5), and α is the angle formed by the link rod (15, 16) with respect to the longitudinal direction of the rail (2). is there. ] A pair of link rods (14, 14) are pivotally attached to the piston rod (13) of the cylinder (12) clamped on the central vertical line of the stopper (4), and both sides of the stopper (4) and the movable head (5) are mounted. A pair of link rods (15, 16) are pivotally attached to the side ends, and a pair of link rods (14) pivotally attached to the tip of the link rods (15, 16) provided on the left and right and the piston rod (13), respectively. , 14) are connected to each other in a freely rotatable manner, and the fastening devices are arranged vertically between the stopper (4) and the movable head (5). A filter plate clamping device in a filter press. A pair of link rods (14, 14) are pivotally attached to the piston rod (13) of the cylinder (12) clamped on the central horizontal line of the stopper (4), and the upper and lower sides of the stopper (4) and the movable head (5) are Link rods (15, 16) are pivotally attached to the side ends, respectively, and a pair of link rods (14) pivotally attached to the tip of the link rods (15, 16) provided on the upper and lower sides and the piston rod (13), respectively. 14, 14) are connected to each other in a freely rotatable manner, and the fastening devices are arranged on the left and right between the stopper (4) and the movable head (5). A filter plate clamping device in a filter press.

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