JPH06134218A - Filter plate feed device for filter press - Google Patents

Abstract

PURPOSE:To provide a filter plate feed device for a filter press for preventing effectively the development of heat and the damage to gears even when a speed reduction mechanism is rotated forwardly or reversely for a long time. CONSTITUTION:An output shaft 2 connected with a filter plate feed component through a speed reduction mechanism 10 is connected with an input shaft 1 connected with a reversible rotating motor 12 by a couple of spur gears 4 and 5, and the relative rotation is generated between the spur gear 4 and the input shat 1 when overload is applied to the spur gear 4 to absorb the overload.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is connected to a speed reducing mechanism via an input shaft and an output shaft of a reversible rotatable motor, and a filter plate feed member moves the filter plate in the front-back direction of a filter press. The present invention relates to a filter plate feeding device in a filter press.

[0002]

2. Description of the Related Art Conventionally, various types of filter plate feeders for this type of filter press are known. For example, there is one in which a reduction mechanism is provided between an input shaft connected to a reversibly rotatable motor and an output shaft connected to a filter plate feeding member.

[0003]

However, in the structure described above, heat is generated in the speed reduction mechanism between the input shaft and the output shaft or the filter is generated by rotating or reversibly rotating the speed reduction mechanism for a long time. When the output shaft is overloaded due to incomplete engagement or disengagement between the feed claw of the plate feed member and the handle of the filter plate, the reduction mechanism is not overloaded. As a result, the gears of the speed reduction mechanism are damaged, and the meshing between the input shaft and the output shaft deteriorates, causing a problem of incorrect timing. Therefore,
An object of the present invention is to solve the above problems, even if the deceleration mechanism is rotated for a long time or reversibly rotated.
It is an object of the present invention to provide a filter plate feeding device in a filter press that can effectively prevent heat generation and gear damage.

[0004]

In order to achieve the above object, the present invention provides a pair of an output shaft connected to a filter plate feed member via a speed reduction mechanism and an input shaft connected to a reversible rotation motor. Connected by spur gears, and configured to absorb the above overload by causing relative rotation between the spur gear on the input shaft side and the input shaft when the overload acts on the spur gear on the output shaft side. To do. That is, a reversibly rotatable motor, an input shaft having a threaded portion on its outer peripheral surface and capable of forward and reverse rotation by a rotational force from the motor, and a screwed portion of the input shaft screwed together with the input shaft. Is rotatable relative to the input shaft and is movable relative to the input shaft in the axial direction of the input shaft between a first position and a second position when a load of a predetermined value or more is applied. A first spur gear, an action member that is movable integrally with the movement of the input shaft in the axial direction of the first spur gear, and a movement amount of the action member is detected to set the spur gear to the first position and A position detecting member for detecting that the spur gear is located at the second position; and a control means for changing the rotation direction of the motor when it is detected by the detecting member when the spur gear is located at the first position and the second position, Between the first position and the second position of the first spur gear, A second spur gear that meshes with the first spur gear is configured with the second spur gear is fixed an output shaft, and a speed reduction mechanism coupled to the output shaft. Further, in the above configuration, the first spur gear has a dimension such that the second spur gear is always meshed between the first position and the second position of the first spur gear in the axial direction of the input shaft. It can also be configured as follows.

[0005]

According to the structure of the present invention, the input shaft and the output shaft are connected by a pair of spur gears, and the reduction mechanism is provided not on the pair of spur gears but on the output side of the output shaft, and In the rotational direction, the first spur gear can rotate relative to the input shaft when a load of a predetermined value or more is applied. Therefore, the spur gear mechanism is downsized, the filter plate feeder is downsized, and it is easy to install in the filter press. Further, since both the input shaft gear and the output shaft gear are spur gears, they easily slip, and when the first spur gear and the second spur gear are stationary due to a load of a predetermined value or more The input shaft rotates relatively. Therefore, even if the spur gear mechanism is rotated for a long time or is rotated in the reverse direction, heat is not generated in the spur gears, and since the spur gears are the spur gears, the meshing is light and the tooth damage can be effectively prevented. Moreover, since the reduction mechanism is provided on the output side of the output shaft, it is not necessary to dispose the reduction mechanism between the input shaft and the output shaft. Further, the back-and-forth movement of the filter press of the filter plate feeding member can be switched by accurately detecting the position of the acting member that moves in the axial direction integrally with the first spur gear by the position detecting member. Further, the feed claws of the filter plate feed member may not be accurately applied to the filter plate, or the filter plate feed member may be normally engaged or disengaged with one side of the filter plate, but may be normally engaged with the other side of the filter plate. If the load of a predetermined value or more acts on the first spur gear via the reduction gear mechanism, the output shaft, and the second spur gear in the case where the engagement or disengagement is impossible, the first spur gear and the input shaft While relative rotation occurs between the first spur gear and the first spur gear, the input shaft continues to rotate by the motor, and the first spur gear moves along the axial direction of the input shaft to the first spur gear.
Move between the position and the second position. Therefore, the load can be absorbed by the relative rotation between the first spur gear and the input shaft, and an overload acts on the pair of spur gears.
It is possible to effectively prevent the feed claws of the filter plate feed member or the filter plate from being damaged.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.
It will be described in detail based on. As shown in FIGS. 1 and 2, the filter press according to the present embodiment includes front and rear stands 31,
A large number of filter plates 33, ..., 33 are arranged between 35 so as to be movable back and forth, a filter cloth is arranged between adjacent filter plates 33, 33, and the movable plate 32 is driven by the drive cylinder of the rear stand 35. , 33 are fastened to the front stand 31 side, while one or a plurality of filter plates 33 are moved to the rear stand side by a pair of left and right filter plate feeding members 30, 30. . Each of the filter plate feed members 30 includes sprockets 34, 2 before and after the filter press.
It is fixed to the drive chain 29 stretched between 8
The pair of rear sprockets 28, 28 is fixed to the drive shaft 27.

The filter plate feeder of the above filter press comprises a reversibly rotatable motor 12, an input shaft 1, an output shaft 2 and
It is provided with a speed reduction mechanism 10, and the rotational force of the motor 12 is transmitted to the drive shaft 27 via the input shaft 1, the output shaft 2, and the speed reduction mechanism 10. A pulley or sprocket 12a is fixed to the tip of the rotating shaft of the motor 12, and a pulley or sprocket 14 is fixed to one end of the input shaft 1, and both pulleys or sprocket 12a,
14 are connected by a belt or a chain 13.
The input shaft 1 and the output shaft 2 are bearings 16, 17, respectively.
It is rotatably supported by the casing 15 via 21 and 22. While the bearing 17 is restricted from moving to the right in FIG. 4 by a stopper 19 with respect to a second braking wheel 9 which will be described later, a stopper 18 in FIG. 4 with respect to a cylindrical portion 8a of an action shaft 8 which will be described later. Movement to the left is restricted. The first spur gear 4 integrally fixes the first braking wheel 3 and the second braking wheel 9 on the inner peripheral surface side thereof. The input shaft 1 has a male screw portion 1a formed on the outer peripheral surface thereof, and a female screw portion 3a formed on the inner peripheral surface of the first braking wheel 3 is screwed onto the male screw portion 1a. Also,
The second braking wheel 9 provided on the other end side of the input shaft 1 is in axial contact with the other end of the input shaft 1 via the cylindrical bearing metal 41 so as to be slidable in the axial direction. Therefore, when a load (overload) of a predetermined value or more acts on the first spur gear 4 from the second spur gear 5, the input shaft 1 is driven by the motor 12 even if the first spur gear 4 is stopped from rotating. The input shaft 1 and the first spur gear 4 are continuously rotated, and the female screw portion 3a of the first braking wheel 3 of the first spur gear 4 and the male screw portion 1a of the input shaft 1 are screwed to each other, whereby
Relative rotation occurs between the spur gear 4 and the second spur gear 4
Are moved in the axial direction of the input shaft 1. By the forward / reverse rotation of the input shaft 1, the first braking wheel 3, the second braking wheel 9 and the first spur gear 4 are integrally moved to the left end position (first position I) as shown by a two-dot chain line in FIG. Right end position (second position I
Move to and from I). The inner peripheral surface of the first spur gear 4 facing the input shaft 1, the inner peripheral surface of the other end of the second braking wheel 9 facing the input shaft 1, and the outer peripheral surface of the input shaft 1. A gap is formed between the male screw portion 1a and the male screw portion 1a.

An action shaft 8 as an action member is rotatably supported by a casing 15 coaxially with the input shaft 1. A cylindrical portion 8a is provided at one end of the action shaft 8, and the second braking wheel 9 is provided in the cylindrical portion 8a via the bearing 17.
Store one end of. A part of the outer circumference of the cylindrical portion 8a of the action shaft 8 is covered with a cylindrical first spring bearing member 42, and a cylindrical bearing metal 37 is formed on the outer peripheral surface of the first spring bearing member 42.
Is provided so as to be slidable with respect to the outer peripheral surface of the casing 15 in the rotational direction and the axial direction. Also, the first
A cylindrical bearing metal 36 is formed on the inner peripheral surface of the spring receiving member 42.
Is provided so as to be slidable in the rotational direction and the axial direction with respect to the outer peripheral surface of the working shaft 8. Therefore, the action axis 8
The cylindrical portion 8a is guided in the axial direction and the rotational direction in the casing 15 by the first spring receiving member 42. It should be noted that the action shaft 8 does not have to rotate in particular, but may separately rotate integrally with the input shaft 1. A cylindrical second spring receiving member 44, whose movement in the right direction in FIG. 3 is restricted by a retaining ring 43, is provided in the middle of the action shaft 8, and the first spring receiving member 42 and the second spring receiving member 42 are provided.
The spring 6 is contracted between the spring receiving member 44 and the spring receiving member 44 so that the first spring receiving member 42 can always reliably guide the cylindrical portion 8a of the action shaft 8 by the urging force of the spring 6. The other end of the action shaft 8 projects to the outside of the casing 15 and a position detecting disc 20 is fixed to the end thereof. Therefore, when the first spur gear 4 moves in the axial direction due to the rotation of the input shaft 1, the working shaft 8 moves in the axial direction via the first and second braking wheels 3, 9 and the bearing 17. As described above, since the second braking wheel 9 and the cylindrical portion 8a of the working shaft 8 are connected by the bearing 17 restricted by the two stoppers 19 and 18, the second braking wheel 9 is formed. The cylindrical portion 8a of the working shaft 8 is relatively rotatable and can move integrally in the axial direction. The rotation of the first spur gear 4 is stopped by the second spur gear 5, and the input shaft 1 continues to rotate, so that the first spur gear 4 moves in the axial direction of the input shaft 1 to move to the first position. I or the second position II, the disk 20 at the tip of the action shaft 8 is located at either of two positions 20a and 20b as shown by the two-dot chain line in FIG. Either position is detected by the switches 7 and 11. When any of the positions is detected by the position detection switches 7 and 11, a position detection signal is sent to the control unit 40 including a control circuit or the like, and the rotation direction of the motor 12 is changed by the control of the control unit 40. Therefore, when the first spur gear 4 moves to the first position I or the second position II, the rotation of the motor 12 is reversed, and the input shaft 1, the first
The spur gear 4, the second spur gear 5, and the output shaft 2 rotate in reverse,
The filter plate feed member 30 is driven in the opposite direction.

On the other hand, a second spur gear 5 meshing with the first spur gear 4 is fixed to an intermediate portion of the output shaft 2 arranged in the casing 15 substantially in parallel with the input shaft 1. The second spur gear 5 is arranged so that the first spur gear 4 always meshes with the first spur gear 4 while the first spur gear 4 moves between the first position I and the second position II. Four
And the axial dimension of the second spur gear 5 are determined. In this embodiment, the second spur gear 5
Although the first spur gear 4 has a larger axial dimension than the first spur gear 4, the second spur gear 5 may have a larger size than the first spur gear 4. Further, in this embodiment, it is preferable that the gear ratio of the first spur gear 4 and the gear ratio of the second spur gear 5 are approximately equal. One end of the output shaft 2 has a connecting member 2
3, the output end 24 of the speed reduction mechanism 12 is connected via a belt or chain 26 to a pulley or sprocket 45 fixed to the drive shaft.

According to the above construction, the input shaft 1, the first spur gear 4, the second spur gear 5, and the output shaft 2 are rotated in the forward and reverse directions by the forward and reverse rotation of the motor 12, and at the same time, the filter plate feed member 30 is used to reduce the speed. When an overload acts on the first spur gear 4 via 10, the output shaft 2 and the second spur gear 5, relative rotation occurs between the first spur gear 4 and the input shaft 1, Based on the rotation of the input shaft 1 by the motor 12, the first spur gear 4 and the working shaft 8 move integrally between the first position I and the second position II. When either position is detected by the position detection switches 7 and 11, the rotation direction of the motor 12 is reversed via the control unit 40. Based on the forward / reverse rotation operation of the filter plate feeding device, the pair of filter plate feeding members 30 are moved in the front-back direction of the filter press. This filter plate feeding member 3
The 0 back-and-forth movement is switched by switching the rotation direction of the motor 12.

According to the above embodiment, the input shaft 1 and the output shaft 2 are connected by the pair of spur gears 4 and 5, and when a load of a predetermined value or more acts in the rotating direction, the input shaft 1 is output to the input shaft 1. The first spur gear 4 is relatively rotatable and axially movable, and if the first spur gear 4 can be the second spur gear 5, the spur gears are made to have an approximately equal ratio. Instead, it is provided on the output side of the output shaft 2. Therefore, the spur gear mechanism is downsized, the filter plate feeder is downsized, and it is easy to install in the filter press. Further, both the gears of the input shaft 1 and the gears of the output shaft 2 are spur gears 4 and 5 so that they are lightly meshed with each other and are easily slippery, and when the second spur gear 5 is stationary, the first spur gear 4 is rotated.
Slips on the second spur gear 5, and the first spur gear 4 easily moves on the input shaft 1. Therefore, even if the spur gear mechanism is rotated for a long time or is rotated in the reverse direction, heat is not generated in the spur gears 4 and 5, and tooth damage can be effectively prevented. Further, since the reduction gear mechanism 10 is provided on the output side of the output shaft 2, it is not necessary to dispose the reduction gear mechanism between the input shaft 1 and the output shaft 2. Further, the forward / backward movement of the filter plate feed member 30 can be operated by accurately detecting the position of the working shaft 8 that moves integrally with the first spur gear 4 by the position detection switches 7 and 11. . Further, in the case where the feed claw of the filter plate feed member 30 does not accurately contact the filter plate 33, the reduction mechanism 10, the output shaft 2, and the second
When a load (overload) of a predetermined value or more acts on the first spur gear 4 from the spur gear 5, the first spur gear 4 is stationary while the input shaft 1 continues to rotate. The first spur gear 4 axially moves between the first position I and the second position II. Therefore, the overload can be absorbed by the relative rotation between the first spur gear 4 and the input shaft 1, and the overload acts on the spur gears 4 and 5, and the filter plate feed member 3 can be absorbed.
It is possible to effectively prevent the feed claw of 0 or the filter plate from being damaged. Therefore, one side of the filter plate is normally engaged or disengaged with the filter plate feeding member, but the other side of the filter plate cannot be normally engaged or disengaged, and the feeding claw and the filter of the filter plate feeding member are not able to be engaged. It is possible to effectively prevent an overload from acting on the plate or the filter plate feeding device. The present invention is not limited to the above embodiment, but can be implemented in various other modes. For example, the position detection switches 7 and 1
1 can be provided in the casing to shorten the working shaft 8.

[Brief description of drawings]

FIG. 1 is a plan view of a filter press including a filter plate feeding device for a filter press according to a position embodiment of the present invention.

FIG. 2 is a side view of the filter press of FIG.

FIG. 3 is a partially enlarged cross-sectional view of the filter plate feeder of FIG.

FIG. 4 is an enlarged view of a main part of FIG.

[Explanation of symbols]

1 ... Input shaft, 1a ... Male screw part, 2 ... Output shaft, 3 ... First braking wheel, 3a ... Female screw part, 4 ... First spur gear, 5 ... Second spur gear, 6 ... Spring, 7,11 ... Position Detection switch, 8 ... Working shaft, 9 ... Second braking wheel, 10 ... Reduction mechanism, 12 ... Motor,
13, 26 ... Belt or chain, 14, 45 ... Pulley or sprocket, 15 ... Casing, 16, 1
7, 21, 22 ... Bearings, 18, 19 ... Stoppers, 2
0 ... Disc, 23 ... Coupling, 24 ... Output end, 25 ... Filter plate feeding device, 27 ... Drive shaft, 28, 34 ... Sprocket,
29 ... Drive chain, 30 ... Filter plate feed member, 31, 35
... front and rear stand, 32 ... movable plate, 33 ... filter plate, 36, 3
7, 41 ... Bearing metal, 40 ... Control part, 42, 44 ...
Spring receiving member, 43 ... Retaining ring.

Claims (2)

[Claims] 1. A reversible motor (12), and a motor (12) having a threaded portion (1a) on an outer peripheral surface thereof.
An input shaft (1) that can be rotated forward and backward by a rotational force from the input shaft (1), is screwed into the screw portion (1a) of the input shaft (1), and is rotatable integrally with the input shaft (1), and When a load equal to or greater than a predetermined value is applied, the input shaft (1) rotates relative to the input shaft (1) and the axial direction of the input shaft (1) is between the first position (I) and the second position (II). First spur gear (4) movable to
An action member (8) which is movable integrally with the movement of the first spur gear (4) in the axial direction of the input shaft (1), and the movement amount of the action member (8) is detected to detect The first spur gear (4) has the first position (I) and the second position (I).
Position detecting member (7, 1) for detecting that the position is
1) and when the detection member (7) detects that the first spur gear (4) is located at the first position (I) and the second position (II), the rotation direction of the motor (12) The control means (40) for changing the first spur gear (4), the first position (I) of the first spur gear (4), and the second position.
A second spur gear (5) constantly meshing with the first spur gear (4) between the position (II), an output shaft (2) to which the second spur gear (5) is fixed, and the output shaft A filter plate feed device in a filter press, characterized in that it is provided with a speed reduction mechanism (10) connected to (2). 2. The first spur gear (4) has the first position (I) and the second position (II) of the first spur gear (4) in the axial direction of the input shaft (1). The filter plate feeding device in the filter press according to claim 1, wherein the second spur gear (5) always has a dimension in which the second spur gear (5) meshes with each other.