JPH0227003B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to cloth washing equipment for filter presses, and in particular, the lower half is fixed to each of two adjacent plates in a row of filter presses, and the upper half is fixed to each of two adjacent plates in a row of filter presses. The so-called hanging cloth has a cloth that is separated from the cloth and suspended on a cloth hanging device, and when the adjacent plates are opened in directions away from each other, the cloth surface forms an inverted V-shaped space. The present invention relates to filter press cloth cleaning equipment suitable for cleaning cloth in a type filter press.

Not limited to the above suspended cloth type filter press,
Even in a fixed cloth type filter press in which a plate is attached to a plate, cake residue adheres to the cloth surface after removing the filter-pressed cake.
The amount of adhesion gradually increases as the operating time passes. This tendency is particularly noticeable in the case of fixed cloth type filter presses.

An increase in the amount of cake residue adhering to the filter press not only deteriorates the peelability of the cake and reduces the working efficiency of the filter press due to clogging of the cloth, but also causes the precipitation of calcium carbonate if the slurry contains calcium carbonate. There is a problem that the crystals affect the cloth and shorten the life of the cloth. Therefore, it is necessary to spray high-pressure water onto the cloth surface every time the filter press runs for a certain period of time to clean the cloth, and to completely remove cake residue from the cloth surface before starting a new operation. . By doing so, the working efficiency of the filter press can be increased and the life of the cloth can be extended.

However, conventionally, the work of cleaning the cloth of this type of filter press involves a worker directing a nozzle that sprays high-pressure water onto the cloth surface of an opened plate to blow off and remove cake residue. Therefore, cleaning a large number of inter-board cloths takes a lot of time and is extremely inefficient.
Moreover, the cake residue scattered during this cleaning operation has the disadvantage that the environment inside the filter press factory is seriously deteriorated.

For example, a filter press cleaning device disclosed in Japanese Patent Publication No. 50-35260 has already been developed and is in the stage of implementation. The target filter press is the above-mentioned fixed cloth type filter press, and for the suspended cloth type filter press, the cloth surface unfolds in an inverted V shape when the plate is opened, so that it is not possible to clean satisfactorily. I couldn't expect any results.

The present invention has been made in view of the above-mentioned circumstances, and is particularly suitable for cleaning the cloth of a suspended cloth type filter press, which has cloth that unfolds in an inverted V shape when the plate is opened. However, it is equally applicable to the cleaning of the above-mentioned fixed cloth type filter press, and it is possible to completely and completely clean the many plate cloths in the filter press row without degrading the environment in the filter press factory. The purpose of this invention is to provide cloth cleaning equipment for filter presses that can be used in various ways.

In order to achieve the above object, the gist of the present invention is to provide equipment for cleaning the cloth of a suspended cloth type filter tarp, which has a cloth that unfolds in an inverted V shape when the board is opened. an overhead running girder that can run in the longitudinal direction of the filter press row; a transverse carriage that can run on the ceiling running girder in a transverse direction of the filter press row; It consists of a cloth cleaning device mounted on a lifting platform, and the cloth cleaning device includes:
In order to be able to be inserted into the space formed by the cloth that forms an inverted V shape when the plate frame is opened, a large number of cloths are provided extending parallel and horizontally from the lifting platform at intervals from each other, and are provided on the outer surface facing in opposite directions. a pair of nozzle bars for high-pressure water injection having nozzles; a nozzle-bar spacing expansion/contraction mechanism for expanding or reducing the mutual spacing between the two nozzle bars; and a nozzle bar spacing control mechanism for positioning the nozzle bar spacing close to the fabric surface, and the spray nozzle changes from horizontally outward to almost vertically upward in accordance with the reduction in the nozzle bar spacing near the fabric hanging part during the same cleaning operation. It is equipped with a nozzle bar rotation mechanism that rotates both nozzle bars symmetrically with respect to each other around their own axes, and the fabric surfaces of the plates that are sequentially opened in the filter press row are cleaned by jetting high-pressure water. The filter press cloth washing equipment is characterized by:

The specific configuration and operation and effects of the cleaning equipment of the present invention will be described in detail below, but first an outline of the suspended cloth type filter press to be subjected to cleaning work by the equipment of the present invention will be explained.

Figures 1 and 2 schematically show a typical example of a suspended cloth type filter press. It has 3.
This upper traverse 3 has a hydraulic cylinder device 4.
A movable tightening plate 5 that is opened and closed by a movable tightening plate 5 is suspended so as to be freely movable, and between this movable tightening plate 5 and one stand 2, a number of plates 6, 6, etc. are also attached to the upper traverse 3. It is suspended so that it can move freely. The hollow interior of the upper traverse 3 is equipped with a plate opening mechanism including an endless link chain 7 for opening the frame driven by a motor 8. After the movable plate 5 is unfastened by the hydraulic cylinder device 4, The structure is such that the overworked plates 6, 6, . . . can be opened one by one by the operation of the plate opening mechanism.

Guide sheaves 10, 10' are attached to both shoulders of each plate 6, 6, . . . via brackets 9, 9', respectively.
For example, a balancer 11, 11' attached to one of the stands 2 guides and supports a pair of tensioning ropes 12, 12' stretched across the stands 2, 2'. The balancers 11, 11' can be of any type, such as a spring balancer or a weight balancer, and are used to apply a predetermined tension to the tensioning ropes 12, 12'.

A cloth hanging bar 14 having hanging sheaves 13, 13' is arranged between two adjacent plates 6, 6, and these hanging sheaves 13, 1
3' are suspended by tension ropes 12, 12', respectively. The cloth 15 is suspended from the cloth hanging bar 14 in such a manner that the central portion is folded back and the folded ends are tied to the lower portions of the two adjacent plates 6, 6. It makes up the cloth.

The filter press 1 configured as described above operates as follows. That is, when the movable plate 5 is actuated in the tightening direction by the hydraulic cylinder device 4, all the plates 6, 6, . . . are guided by the plate guide bar 19, travel on the upper traverse 3, and are completely tightened. When the slurry to be filtered is supplied to the filter press 1 under high pressure, the slurry is supplied through the slurry supply port 16 to the inside of the cloth 15 folded between each plate 6, 6, and is filtered by the cloth 15. The filtered liquid is discharged from the inside of each plate 6 to the outside of the filter press 1 through the liquid outlet 17, and a cake 18 is formed inside the plate 15 between the adjacent plates 6.

Next, the movable plate 5 is released from the cake 18.
In order to eliminate the problem, the plates 6, 6', etc. are opened one by one. This frame opening operation is performed by driving the endless link chain 7 by the motor 8, and operating a link mechanism (not shown) at the plate 6 to be opened, thereby unlocking the plates from each other, and at the same time, the hook ( This is done by moving the plate 6 along with it for a fixed distance using a motor (not shown). In this way, as the plates 6, 6... are opened by the plate opening frame structure, the hanging sheave 1 of the cloth 15
3 and 13' move at the same time, and when fully opened, they will be positioned exactly in the center of the width of the open frame.As a result, the cloth 15 will form an inverted V-shape with the cloth hanging bar 14 at its apex, as shown in FIG. Expand to. At that time, the tensioning rope 12,
The tension applied to cloth 12' is
The cloth 15 with the cake 18 attached thereto is moved down the cloth hanging bar 14 against the tension of the balancers 11 and 11', since the load is balanced to zero with no excess residue or adhering cake. After going through the process shown in Figure 3a, it takes on a W-shape as shown in Figure 3b, and the cake 18 attached at this stage
It will be scraped off.

If the cake 18 peels off and falls, the tensioning rope 1
2 and 12' spring up, and the shock and vibration caused thereby further promote complete peeling of the cake 18. The cloth 15 that has become unloaded in this way is
The take-up action of the balancers 11 and 11' returns the cake to its original position and shape as shown in Figure 3C, and the same process is repeated for all plates to complete the cake peeling and discharge process. It is something. For filter presses with as many as 150 chambers, even if the plate spacing at the time of initial opening is approximately 1 m or more, the final opening plate spacing will be approx.
The distance between the boards becomes about 0.6m, and the distance between the boards gradually narrows.
The cloth hanging bar 14 is always located at the apex position of the cloth developed in an inverted V shape, and is located on the center line between the open frame plates.

Although the suspended cloth type filter press described above has a much better cake peeling property than the fixed cloth type filter press, it is still difficult to completely peel the cake from the cloth.
Some cake residue will remain on the fabric surface, and if you leave it as it is and continue pressing repeatedly,
Not only does the cloth become clogged, leading to a decrease in overefficiency, but also the peelability of the cake gradually deteriorates, and if crystals such as calcium carbonate are deposited, the cloth itself deteriorates prematurely. Therefore, when operating a filter press, it is necessary to periodically wash the cloth by spraying high-pressure water onto the cloth surface covered with cake residue, and such cloth cleaning work is necessary for the operation of this type of filter press. This is essential work.

By the way, the cloth cleaning device for a filter press disclosed in the above-mentioned Japanese Patent Publication No. 50-35260 is intended for cleaning a fixed cloth type filter press, and uses a pair of nozzle bars having a large number of outwardly directed injection nozzle ports. Load it between the open boards,
High-pressure water was sprayed onto the cloth stretched on this board to wash it. In this case, since the fabric surface when the frame is opened is at a constant interval over the entire height of the plate, it is sufficient to provide a pair of nozzle bars with rollers that contact the plate, respectively, and move the nozzle bars up and down while maintaining a constant spacing. Got to achieve the purpose of cleaning.

However, in the suspended cloth type filter press illustrated in FIGS. 1 to 3,
Since the cloth unfolds in an inverted V-shape when the frame is opened, there is a problem in that during cleaning work, the distance between the pair of nozzle bars must be controlled to match the inverted V-shaped cloth surface. A problem arises in that the vicinity of the top of the spread cloth also has to be cleaned, and the above-mentioned conventional cloth cleaning apparatuses are not necessarily able to produce a good cleaning effect.

Although the present invention can of course be applied to the cloth cleaning work of the fixed cloth type filter press, it is particularly suitable for cleaning suspended cloth type filter presses in which the cloth surface unfolds in an inverted V shape when the plate is opened. The feature is that when a pair of nozzle bars are raised and lowered to perform cleaning operations using high-pressure water jets, a nozzle bar spacing control mechanism and a nozzle bar spacing expansion/contraction mechanism allow each nozzle bar to touch the cloth surface. The spacing between the nozzle bars is controlled so that the nozzle bars are positioned close to each other, and the nozzle bar rotation mechanism is used to move both nozzle bars so that the injection nozzle changes from horizontally outward to almost vertically upward as the nozzle bar spacing near the cloth suspension part decreases. They are rotated symmetrically around their own axes, and the cloth surfaces that are developed in an inverted V shape on the plates that are sequentially opened in the filter press row are automatically cleaned by jetting high-pressure water. That's what I did.

An embodiment of the present invention will be described in detail below with reference to FIGS. 4 to 8.

In Figures 4 and 5, 20 is a girder, 21
2 is a girder support truck, and 22 is a longitudinal motor provided on the girder support truck 21. Girder support cart 21
Although not shown, a truck having the same structure as this is provided opposite to each other at the other end of the girder 20, and this pair of trucks 21, 21 is mounted, for example, on the upper traverse 3 extending in the longitudinal direction of the filter press 1. By driving the longitudinal motor 22, the filter press can travel along the filter press rows on rails 23, 23 laid down, forming an overhead traveling girder 25 as a whole.

A limit switch _L1 is provided on the arm member 24 hanging from the girder 20, and the limit switch _L1
For example, by engaging with and disengaging from the extension portion of the cloth hanging bar 14, the running and stopping of the ceiling running girder is controlled. That is, when the frame of the filter press 1 is opened, the cloth hanging bar 14 is always located on the center line of the frame opening plates 6, 6, so that the limit switch of the traveling overhead girder 25 is
When L ₁ engages with the extension of the cloth hanging bar 14, the drive of the vertical motor 22 is stopped, the ceiling traveling girder 25 stops traveling, and the center line of the cleaning device 35, which will be described later, is between the open frame plates 6, 6. It will occupy a position that coincides with the center line of.

Reference numeral 26 denotes a carriage that can run on the girder 20 of the overhead traveling girder 25 in a direction across the filter press row, and is equipped with a traverse motor 27 and a hydraulic unit 2.
It is equipped with 8. The drive pinion 29 of the traversing motor 27 meshes with the rack rail 30 on the girder 20, and the traversing motor 27 drives the traversing truck 2.
6 can move in the left-right direction in FIG. 4, and the movement toward the filter press row is stopped by a limit switch _L2 provided on the girder 20. The stopping position of the traversing cart 26 is such that a pair of nozzle bars 36, 36 of a cloth cleaning device 35, which will be described later, are connected to the plates 6, 6 of the filter press.
This is the position where the hanging cloth 15 is completely inserted into the inverted V-shaped space formed when the frame is opened.

A telescopic vertical support arm 32 containing a hydraulic cylinder device 31 for lifting and lowering is attached to the lower surface of the traversing truck 26.
Lifting platform 3 equipped with cloth cleaning device 35 at the lower end of
3 are integrally installed. The lifting hydraulic cylinder device 31 is actuated by the hydraulic unit 28 on the traversing cart 26, and the lifting table ₃₃ is vertically movable up and down _. The upper and lower limits are controlled by the upper and lower limits, and the range in which the cleaning device 35 can be moved up and down is regulated.

The rectangular box-shaped support frame 34 of the lifting platform 33 has a sixth
As shown in FIG. 7, a cleaning device 35 is installed. This cleaning device 35 is arranged so that it can be inserted into the space formed by the cloth that forms an inverted V shape when the plates 6, 6 of the filter press are opened.
A large number of injection nozzles 36a, 36a, .
A pair of high-pressure water injection nozzle bars 36, 3 having
6, and a nozzle bar interval expansion/contraction mechanism 37 for expanding or decreasing the mutual interval between both nozzle bars 36, 36.
, a nozzle bar spacing control mechanism 38 for maintaining each nozzle bar in a position close to the fabric surface during a cleaning operation, and a nozzle bar spacing control mechanism 38 for directing the spray nozzle 36a horizontally outward in response to a reduction in the nozzle bar spacing near the fabric hanging portion. The nozzle bar rotation mechanism 39 rotates both nozzle bars 36, 36 symmetrically with respect to each other around their own axes so that the nozzle bars 36, 36 are directed upward substantially vertically from the nozzle bar rotation mechanism 39.

The nozzle bar interval expansion/contraction mechanism 37, the nozzle bar interval control mechanism 38, and the nozzle bar rotation mechanism 39
Although any conventionally known mechanism can be adopted as this, the details of one embodiment will be explained with reference to FIGS. 6 and 7.

The nozzle bar interval expansion/contraction mechanism 37
A pair of nozzle bar receiving blocks 41, 41 that are slidable along the guide rods 40, 40 of the box-shaped support frame 34 of the lifting platform 33, and a piston rod 42a is provided in each of these nozzle bar receiving blocks. , 42a are fixed at the ends thereof, and the operation of the hydraulic cylinders 42, 42 causes the pair of nozzle bars 36,
36 can expand or contract the mutual spacing.

The nozzle bar spacing control mechanism 38 includes brackets 4 on the nozzle bar receiving blocks 41, 41, respectively.
A pair of limit switches L ₅ , L ₅ having limit rollers 43 attached via 1a, 41a
These limit rollers 43, 43 come into contact with the unfolded cloth surface, thereby controlling the nozzle bar spacing so as to match the unfolded cloth surface in an inverted V-shape. That is, the pair of nozzle bars 36, 36 inserted between the unfolded cloth widens the distance by the operation of the nozzle bar distance expanding/reducing mechanism 37, and the limit roller 43 of limit switch _L5 , _L5 ,
When the nozzle 43 comes into contact with the cloth surface, a first-stage limit operation is performed, the movement of the nozzle bars 36, 36 is stopped, and the spray nozzle 36a occupies an optimal cleaning position with respect to the cloth surface. When the limit rollers 43, 43 come into contact with the inverted V-shaped cloth surface as the lifting platform 33 rises, the second stage limit operation is performed, reducing the distance between the pair of nozzle bars 36, 36, and forming an inverted V-shaped
It follows the shape of the cloth surface. Such lifting and lowering operations and interval control operations of the nozzle bars 36, 36 can all be automated according to a cleaning work program.

The nozzle bar rotation mechanism 39 is exposed at the cutout of the nozzle bar receiving blocks 41, 41,
and pinions 44, 44 which are integrally fixed to each nozzle bar 36, 36;
A pair of racks 45, 45 are attached and fixed to the box-shaped support frame 34 so as to be able to engage with the pinions during the movement path of the pinions 44, 44 when the distance between the racks 36 is expanded or contracted, and the distance between the racks 45 and 45 can be adjusted. When the pair of nozzle bars 36, 36 rise in the cloth surface developed in an inverted V shape and the distance between them gradually decreases, the pinions 44, 44, which are integral with the nozzle bars 36, 36, respectively, move to the corresponding racks 4.
5 and 45, and when the distance between the nozzle bars is further reduced, the nozzle bars 36 and 36 rotate symmetrically about their respective axes. In this way, the nozzle bar rotation mechanism 3
9, both nozzle bars 36, 36 are symmetrical with respect to each other so that the injection nozzles 36a, 36a, . The machine rotates around its own axis, effectively cleaning the cloth surface.

The nozzle bars 36, 36 have over their entire length,
For example, a spray nozzle 36 with a pressure of 50 kg/cm ² and a spray angle of 90°C.
A large number of injection nozzles 36a, 36a, . This nozzle cover 36b is
It is effective in preventing the splashing of high-pressure water and preventing environmental deterioration in the filter press factory during cleaning operations. Note that 36c is a pressure water introduction pipe that introduces high pressure water into the nozzle bar 36.

Next, a cleaning operation using the cloth cleaning equipment having the above configuration will be explained based on FIG. 8.

As mentioned above, the plate 6 of the filter press 1,
When the frame 6 is opened and the cloth 15 fixed to the plates 6 and 6 is unfolded in an inverted V shape as shown in the figure, the overhead gutter 25 is moved along the filter press row to this open frame position. urge The ceiling traveling girder 25 stops traveling when its limit switch _L1 comes into contact with the extension of the cloth hanging bar 14. At the position where the running is stopped, the center line of the cloth cleaning device 35 coincides with the center line of the cloth unfolded in an inverted V shape.

After the overhead running girder 25 stops, the traversing cart 26 and the lifting platform 33 are moved and the cleaning device 35 is inserted into the lower end position of the fabric forming space spread out in an inverted V shape. The traversing carriage 26 comes into contact with the limit switch _L2 and stops, and in this position the pair of nozzle bars 36, 36 of the cloth cleaning device 35 extends over the entire width of the cloth.

Next, the pair of nozzle bars 36, 36 move in a direction to widen the gap by the action of the nozzle bar spacing expansion/contraction mechanism 37, and stop at that position when the limit switch _L5 comes into contact with the cloth, and the cleaning operation is now ready. Complete.

High-pressure water is sent to the nozzle bars 36, 36, and while being sprayed from the spray nozzles 36a, 36a, . . . , the nozzle bars 36, 36 ascend and descend in the cloth forming space to wash away cake residue adhering to the cloth surface. During this cleaning, the spray nozzles 36a, 36a always maintain an appropriate distance from the fabric surface by the action of the nozzle bar spacing control mechanism 38, and furthermore, near the fabric hanging part, the spray nozzles 36a, 36a are directed almost vertically upward by the action of the nozzle bar rotation mechanism 39. Thoroughly wash the surface of the cloth without leaving any spots.

When the cleaning work between the open frame plates of the first stage is completed as described above, the cloth cleaning device 35 is retreated from the filter press row by moving the traversing cart 26,
In the same manner, the next stage cleaning operation is carried out, and the cleaning operation is successively carried out over all stages of the filter press row. In order to perform the cleaning work on all the stages of the filter press row, the overhead running girder 25 sequentially moves vertically and stops, the traverse truck 26 moves traversely, advances/backwards and stops, the lifting platform 33 moves up and down, and the nozzle bar 36 , 36, etc. can all be performed automatically according to a programmed sequence.

The elevating mechanism of the elevating table, the nozzle bar spacing diffusion mechanism, the nozzle bar spacing control mechanism, the nozzle bar rotating mechanism, etc. in the present invention are not limited to those specifically explained as examples, and various types may be used as long as the same functions are achieved. Design changes are possible.

The filter press cloth cleaning equipment of the present invention is of course applicable to the cleaning work of conventional fixed cloth type filter presses, but is particularly effective for cleaning suspended cloth type filter presses. By fully automating the cleaning work, the operating efficiency of the filter press factory has been significantly increased, and the effects of this are significant, such as preventing environmental deterioration within the factory.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of a suspended cloth type filter press that is effectively cleaned by the cloth cleaning equipment of the present invention, FIG. 2 is a partially cutaway external perspective view of the filter press when the plate frame is opened, Figure 3 a, b,
c is an explanatory diagram showing how the cake peels off when the plate frame of the filter press is opened, FIG. 4 is a partially cutaway schematic side view of the entire cloth cleaning equipment of the filter press according to the present invention, and FIG. 5 is a diagram showing the filter according to the present invention. FIG. 6 is a partially cutaway schematic front view of the entire press cloth cleaning equipment, FIG. 6 is a partially cutaway external perspective view of the cloth cleaning equipment, and FIG. 7 is a detailed structure of one embodiment of the nozzle bar expansion/closing mechanism and rotation mechanism. FIG. 8 is an enlarged perspective view with some parts omitted, showing the cleaning operation by the cleaning equipment of the present invention. 1...Filter press, 2...Stand, 3
...Upper traverse, 4...Hydraulic cylinder device,
5... Movable plate for tightening, 6... Board, 10... Guide sheave, 13... Hanging sheave, 14... Cloth hanging bar, 15... Cloth, 18... Cake, 20...
Girder, 21... Girder support cart, 22... Vertical motor, 23... Rail, 24... Arm member, 2
5... Overhead girder, 26... Traversing trolley, 27
... Traverse motor, 28 ... Hydraulic unit, 29
... Pinion, 30... Ratclaire, 31...
Hydraulic cylinder device for lifting, 32...vertical support arm,
33... Lifting platform, 34... Box-shaped support frame, 35...
Cloth cleaning device, 36... Nozzle bar, 37... Nozzle bar spacing expansion/contraction mechanism, 38... Nozzle bar spacing control mechanism, 39... Nozzle bar rotation mechanism, 40...
...Guide rod, 41...Nozzle bar receiving block, 42
... Double-acting hydraulic cylinder, 43 ... Limit roller, 44 ... Pinion, 45 ... Rack, L ₁ ,
L ₂ , L ₃ , L ₄ , L ₅ ... Limit switch.

Claims (1)

[Scope of Claims] 1. Equipment for washing the cloth of a suspended cloth type filter press, which has a cloth that unfolds in an inverted V shape when the plate is opened, and can run in the longitudinal direction of the filter press row. an overhead running girder, a transverse carriage that can run on the overhead girder in a transverse direction of the filter press row, an elevator platform suspended on the transversal carriage so that it can be raised and lowered, and a cloth washing machine mounted on the elevator platform. The cloth cleaning device extends parallel and horizontally from the lifting platform at intervals from each other so that the cloth can be charged into the space formed by the cloth, which forms an inverted V shape when the plate frame is opened. a pair of high-pressure water injection nozzle bars that are provided in the same direction and have a large number of nozzles on opposite outer surfaces; a nozzle bar spacing expansion/contraction mechanism for expanding or reducing the mutual spacing between the two nozzle bars; A nozzle bar spacing control mechanism for positioning each nozzle bar close to the fabric surface when performing a cleaning operation using water jets, and a nozzle bar spacing control mechanism that positions each nozzle bar close to the cloth surface when performing a water jet cleaning operation, and water jetting according to the reduction in the nozzle bar spacing near the cloth suspension part when performing the same cleaning operation. A nozzle bar rotation mechanism that rotates both nozzle bars symmetrically about their respective axes so that the nozzles are directed from horizontally outward to approximately vertically upward; A filter press cloth cleaning equipment characterized in that the surface is cleaned by jetting high-pressure water. 2. The ceiling running girder is provided with a center positioning limit switch and a charging positioning limit switch for accurately positioning the pair of nozzle bars in the space formed by the cloth which forms an inverted V shape when the plate frame is opened; The traversing truck is provided with a limit switch for positioning the upper and lower limits of the lifting platform, and the nozzle bar is further provided with a limit switch for controlling the distance between the nozzle bars that comes into contact with the cloth surface developed in an inverted V shape. Filter press cloth cleaning equipment according to scope 1. 3. Claim 1, characterized in that the nozzle bar is provided with a flexible nozzle cover having a U-shaped cross section over its entire length to prevent splashing of the jetted high-pressure water. Cloth cleaning equipment for filter presses as described in section. 4. The nozzle bar rotation mechanism comprises a pinion fixed on the nozzle bar side and a rack fixed on the lifting platform side, which mesh with each other as the distance between the two nozzle bars decreases. Cloth cleaning equipment for the filter press described.