CN111465441A - Method for manufacturing bag bottom of dust removal filter bag, special equipment and filter bag - Google Patents

Abstract

A method for manufacturing the bag bottom of a dust-removing filter bag comprises the step of tightly gathering a cylindrical filter material which is connected and extended with a filter material of a bag body at the port of one end of the cylindrical bag body (1) to be manufactured into a bag bottom to form a sealed bag bottom. Meanwhile, corresponding special equipment for manufacturing the bag bottom and the corresponding buckle-prick sealed bag bottom are provided.

Description

Method for manufacturing bag bottom of dust removal filter bag, special equipment and filter bag Technical Field

The invention relates to a method for manufacturing a bag bottom of a dust removal filter bag and the filter bag produced by the method, and belongs to the field of environmental protection dust removal. The invention discloses special equipment for manufacturing a lifting bag bottom, and belongs to the field of special machinery for manufacturing dust removing equipment.

Background

Bag dust removal is an older dust removal technology. It has been used abroad as early as the 80 th century, and has been in the history of over two hundred years. In the middle of the eighties of the last century, under the influence of a series of environmental events in developed countries, China pays attention to the environmental protection career of the country, and the bag type dust removal industry is in the initial initiative of China. With the continuous progress of the technology, the efficiency of bag type dust removal is gradually improved, the bag type dust removal device can adapt to most dust removal working conditions, the air volume processing is large, the pressure of equipment is small, and the bag type dust removal device becomes the most widely applied dust removal technology in the dust removal industry. Currently, in the pollution control of the industrial industry, bag-type dust removal becomes a mode of upgrading and preferentially selecting ultralow emission, 90% of bag-type dust removal is used in the building material industry, more than 80% of bag-type dust removal is used in the steel industry, nearly 50% of bag-type dust removal is used in the garbage incineration industry, and the like, so that the bag-type dust removal plays a very important role in fighting against defending and attacking the hard in the atmosphere in the blue sky.

Compared with other types of dust collectors, the bag type dust collector has the outstanding advantage of high dust collection efficiency. However, in recent years, the haze phenomenon in China is serious, and the fact that the existing performance of the bag type dust collector can not meet the requirement of dust control is proved along with the development of the economic total amount in China.

In bag type dust removal, dust is mainly filtered through a dust removal filter bag, so that the purpose of dust removal is achieved. Therefore, the dust filter bag is a core component of the bag filter, and the dust filtering efficiency of the dust filter bag for dust determines the dust removing efficiency of the bag filter. At present, most filter materials for manufacturing the dust removal filter bag have excellent dust filtration efficiency, but the dust filtration efficiency of the dust removal filter bag is far lower than that of the filter materials. This is because the filter material is manufactured into the dust filter bag, which has been done by sewing in the conventional manner so far. When the dust removing filter bag is manufactured, needle holes are left due to sewing of needle threads, and gaps are formed at the overlapped and sewn positions of the two pieces of cloth. The needle hole and the gap become a main dust exhaust channel, and the dust filtration efficiency of the dust filter bag is seriously influenced.

As shown in fig. 1 and 2, when the bag bottom of a dust-removing filter bag is manufactured in the industry at present, a cylindrical bag body filter material and another blind plate type bag bottom filter material are sewn into a whole by using threads to form the bag bottom of the dust-removing filter bag. In order to further improve the filtering efficiency of the bag-type dust collector, research and development personnel take the needle eye formed when the filter bag is removed or blocked as a main attack direction, and successively generate means of adopting a hot melting technology for the longitudinal seam of the bag body of the filter bag or adopting a gluing process for the longitudinal seam of the bag body, the needle eye at the bag opening and the needle eye at the bag bottom and the like so as to reduce dust exhaust channels existing on the filter bag.

Practical application proves that the problem cannot be effectively solved by applying glue to peripheral seam needle holes formed by the traditional bag bottom manufacturing technology (namely, sewing the bag bottom filter material similar to a blind plate with the bag body filter material). The bag bottom manufacturing process has the following defects:

firstly, sewing inevitably forms needle holes, and the needle holes formed by sewing and positioned at the bottom of the dust removal filter bag are easy to expand and are more in number. Practice proves that the needle holes are main dust exhaust channels, and the filtering efficiency of the filter bag is reduced. In order to solve the problem of needle holes, some workers in the industry add procedures and adopt a needle hole gluing technology. However, the adhesive layer is easy to fall off because dust and gas generally have the characteristics of high temperature, corrosion and grinding pecking in a large number of industrial applications, and the bottom of the filter bag has high wind speed in the operation process of a bottom air inlet bag type dust removal system, so that the dust and the gas collide with each other seriously; and under the action of external working force (high-pressure blowback air mass impact and filtering negative pressure), the seam is easily torn at the sewing position. Therefore, the outer glue coating technology cannot fundamentally solve the problem of dust exhaust channels formed by needle holes at the bottom of the bag. And the gluing process also increases the cost.

And secondly, sewing is performed to connect the two filter materials, so that cloth seam gaps can be left between the two overlapped and sewn filter materials, and the seams are also dust exhaust channels. The sealing is usually performed by gluing by the personnel in the industry, but the operation is difficult. And similarly, the adhesive layer is easy to fall off, the problem of dust exhaust channels of cloth seam gaps cannot be fundamentally solved, and the cost is high.

Thirdly, the existing technology for manufacturing the bag bottom of the dust-removing filter bag is difficult to realize the operation of a mechanical production line. Up to now, the sewing of the bag bottom is all manual single-process operation, and the full-automatic production line operation cannot be realized. It should be noted that, at present, the bag body sewing or hot melting process is realized automatically. Taking the bag body production of the 160mmx6m filter bag as an example, the production efficiency of the automatic bag body production line is 750/hour. At present, the sewing of the bag bottom needs to be finished manually, the production efficiency is about 30 per hour, and if the needle holes are sewn on the periphery of the bag bottom for gluing, more labor and material costs are needed. Resulting in low production efficiency and high cost.

Therefore, the full-automatic production line operation for manufacturing the filter bag body, the bag bottom and the filter bag has no needle holes and no cloth seams, which is expected by the industry for many years and cannot be realized, and the three reasons are as follows: firstly, the traditional technology is generally made by sewing filter materials and a single bag bottom filter material for bag bottom manufacture. The manufacturing process is complex, and the full-automatic production line operation is difficult to realize. Secondly, the special equipment for producing the bag bottom is difficult to design, and the filter material, especially the membrane of the membrane-covered filter material, must be ensured not to be damaged in the manufacturing process. Thirdly, the new special equipment needs to adapt to the full-automatic production line operation of the filter bag, and has higher requirements on the design. If no good scheme exists, the manufacturing cost is not reduced and increased reversely.

CN102284215A discloses a preparation method of a dust-removing filter bag, which comprises bag body preparation, bag opening preparation and bag bottom preparation. The bag bottom is prepared by turning the bag body and sewing the edge of the bag bottom in an embedded mode. The method only reduces the dust discharge of the cloth seam to a certain extent, but can not fundamentally solve the dust discharge problem of the seam and the needle eye because the sewing process is still adopted. CN104436866B discloses a manufacturing method of a non-pinhole dust removal filter bag, which is characterized in that a composite single-sided sintered and shaped micropore belt is hot-pressed on a sewing needle thread of the filter bag. Because the structure of the bag bottom of the dust removal filter bag is complex, the method can not be applied to the bag bottom, so that the microporous belt only covers the needle seams of the bag body and the bag opening, and the dust removal problem of the needle holes and cloth seam seams at the bag bottom can not be solved.

The invention provides a solution for solving the problems of the prior dust-removing filter bag bottom.

Disclosure of Invention

The invention aims to provide a novel method for manufacturing a bag bottom of a dust-removing filter bag, the dust-removing filter bag manufactured by the novel method and a technical scheme of special equipment thereof aiming at the defects of the prior art. The applicant develops and develops the whole bag-type dust removal system for a long time, and provides a technical scheme for solving the factors which are mutually restricted in the system. The novel bag bottom manufacturing method, the dust removal filter bag manufactured by the novel method and the special equipment thereof are one of a series of system improvement novel technologies. That is, the technology can only be used together with the matching technology to exert all the excellent performances of the product. If the whole system is used to improve the new technology, the dust discharging amount of the outlet of the dust remover is expected to reach 1mg/Nm 3. The dust discharge index is far higher than the national requirement of 20mg/Nm3 at present, and is also higher than the discharge index of the actual operation of most bag-type dust removal at present, namely 10-20mg/Nm 3.

The invention provides a method for manufacturing a bag bottom of a dust removal filter bag, which is characterized by comprising the following steps: the cylindrical bag body is used for manufacturing a port filter material at one end of the bag bottom or a cylindrical filter material which is connected with the bag body filter material and extends at the port, and the cylindrical filter material is tightly gathered into a bunch by applying external force to form a sealed bag bottom.

At present, the flow line production of all dust-removing filter bags is divided into three procedures, namely the production of a cylindrical bag body, the production of a bag opening and the production of a bag bottom. The manufacturing process of the cylindrical bag body comprises the following steps: before entering the filter bag production process, the finished filter material is generally processed or cut according to the radial size of the filter bag to be manufactured, and is rolled into a cloth roll for standby. For the commonly used external filtering type non-folded filter bag, the cylindrical bag body production line mainly has the function of dragging and leading out the filter material of the finished product filter material cloth roll by using the friction force of a compression roller. A cloth positioning guide plate is arranged between the press roller and the cloth roll, and the continuously running cloth is rolled up and two edges of the continuously running cloth are overlapped to form a cylinder shape. And after the guide plate is positioned before the press roller (the cloth roll direction is the front), a hot melting machine, a sewing machine or a gluing device which can exist is arranged to fix the two edges of the overlapped filter materials into a whole to form a complete cylindrical bag body. The compression roller flattens the formed cylindrical bag body while providing dragging force to form the flat cylindrical bag body which is ironed, neat and easy to fold and cut. A cylindrical bag body cloth storage rack is arranged behind the compression roller. The function of the cloth storage frame is to buffer the working flow of the production line. And after the flat cylindrical bag body is sent out from the cloth storage frame, the flat cylindrical bag body finally enters a shearing device, is cut to length and is ready to enter the next link of the production line, namely, a bag head and a bag bottom are sewn and installed.

For the pleated filter bag, after a general filter material cloth roll is uncoiled, pleats are firstly formed, a shroud ring is connected with the peak of the pleat bulge, so that parameters such as the graduation, pleat depth and the like of the pleats can be fixedly maintained, and then the pleats are cut to length. The process can realize mechanized manufacturing by using the existing manufacturing equipment in the market. And sewing the folded cloth piece with the surrounding belt into a cylindrical folded bag body manually, and preparing to enter the next link of the production line, namely sewing and installing a bag head and a bag bottom.

The method for manufacturing the bag bottom is a novel method for manufacturing the bag bottom on the basis of a semi-finished product manufactured into a cylindrical bag body. The connection extension means that the bottom end of the cylindrical bag body can be connected with other accessories, such as a cylindrical reinforcing layer and the like according to needs, and the gathered filter material can be the filter material of the reinforcing layer only or can be the filter material of two layers of the cylindrical bag body and the reinforcing layer. The filter materials are tightly gathered into a bunch, and the passage between the inside and the outside of the filter bag can be effectively sealed.

Tightly gather to the filter material of a tuft, its sealed effect will be higher than at the bottom of traditional sewing bag far away, and the reason is: although the filter materials gathered into a bunch have cloth seams, the molecular-level sealing can be realized as long as the external force for gathering the filter materials together is large enough. The reason is obvious, just like the ham sausage casing which is frequently eaten in our life, the material is soft, smooth and plastic with poor compressibility, but the fresh-keeping and sealing functions of air tightness, water tightness and no penetration of bacteria can be realized only under the plastic deformation stress extrusion of an aluminum metal ring. The object used by the method is a filter material with relatively good compressibility, and the binding and locking force is not lower than that of the food package. Another example is that the sealing mode between the filter bag opening and the card is expansion ring sealing, and the principle is to tightly attach the bag opening cloth to the edge of the steel plate of the card hole by using the elastic force generated after the expansion ring is extruded and deformed, so that the gap between the filter bag opening and the card hole is sealed to a dust-tight degree. Laboratory results and a large number of practical application cases prove that the expansion ring has excellent sealing effect and can completely prevent dust leakage. In a similar way, the sealing method of the scheme is that the filter materials of the bag body are tightly gathered into a bunch, and the cloth seams of the bunch of filter materials are tightly extruded by the force far greater than the elastic force of the expansion ring, so that the sealing performance better than the sealing effect of the expansion ring is necessarily obtained. Although theoretically, the bag body filter materials can be tightly gathered, the thickness of the bag body filter materials is much thicker than that of ham sausage casings, the volume of the bag body filter materials is much larger than that of the ham sausages, and sealing is difficult to achieve by a conventional bag tying method. For example, the tying of the mouth of a bread bag and the tying of a cloth bag by using a rope can form gaps. Therefore, prior to the present invention, those skilled in the art never thought of gathering the bag body filter material directly and tightly, but rather, adopted sewing and thought to try to make the needle hole smaller. Of course, no tying equipment or buckle parts exist. The reason for this is that, under the conventional thinking of those skilled in the art, it is not thought that the good sealing effect can be achieved by directly and tightly gathering the bag body filter material, and therefore, it is not thought to develop equipment and locking components which can directly and tightly gather the bag body filter material.

Compared with the traditional bag bottom manufacturing method, the method does not produce needle holes at all. In conventional sewing methods, the compression force of the stitches between the stitches against the fabric seams is much less than that which can be provided by metal or equivalent solutions. Therefore, the method has higher sealing degree, and is greatly beneficial to improving the filtering efficiency of the filter bag. In addition, the method saves circular cloth pieces and sewing threads (the price of the sewing threads meeting the smoke requirement is not cheap), and the material cost is lower than that of the traditional method. If the production equipment corresponding to the method is reasonable in design (will be emphasized below), the method can be completely suitable for the full-automatic production line operation for manufacturing the filter bag, the production efficiency is greatly improved, and a large amount of labor cost is saved.

The sealed bag bottom can be formed by various methods, such as binding the filter material tightly gathered together with ropes or by fastening with clips. The two methods inherit the universality and high efficiency of sewing and are suitable for any kinds of filter materials. The rope-like member includes: ropes, cables, wires, etc., of various materials. However, the ropes are different in material due to different working conditions, such as PTFE wires, polyester wires, metal wires and the like.

Preferably, the clip is locked tightly together using snap-type members. The buckle type component can be a buckle made of various metal materials and in various cross-sectional shapes and various shapes. In the experiment, 4.2mm thick Q235 steel wires are taken to be made into a C-like buckle with the length of 86 mm, and the bottom of the filter bag with the diameter of 135mm can be perfectly fixed and sealed under the extrusion force of kilonewtons. Completely meets the requirements of actual working conditions.

For the non-pleated filter bag, the bag bottom manufacturing equipment for realizing the method for manufacturing the bag bottom of the dust removal filter bag is arranged after the production process of the cylindrical bag body, so that the bag bottom manufacturing equipment becomes a part of a filter bag production line, and the bag bottom manufacturing period is matched with the storage capacity of the cylindrical bag body storage rack of the production line, so that the bag bottom part suitable for the full-automatic production line operation of filter bag manufacturing can be manufactured.

As described in the production line technology of the non-folded tubular bag body, the bag bottom manufacturing equipment using the method can be arranged behind the sum of the cloth storage racks of the bag body production equipment and the sizing and cutting device. If necessary, another conveying press roller can be arranged before the flat cylindrical bag body enters the bag bottom manufacturing equipment. During production, the flat cylindrical bag body is sent out from the cloth storage rack, cut to length and then enters the bag bottom manufacturing equipment using the method to form the tied bag bottom. In this case, the bag bottom manufacturing equipment is fixed, and the cutting action and the buckling and compressing action of the clamping ruler require a certain time to complete, and the flat cylindrical bag body is continuously produced, so that the action period of the bag bottom manufacturing equipment must be matched with the storage capacity of the cloth storage rack of the cylindrical bag body production equipment. The start, stop and speed of the newly arranged conveying press roller are set according to the action period of the bag bottom manufacturing equipment. That is, the setting must also be satisfied in matching with the storage capacity of the cloth storage rack of the tubular bag body production apparatus.

Or the bag bottom manufacturing equipment and the fixed-length cutting device are manufactured into a whole and are arranged on a trolley together, and the trolley can do reciprocating linear motion on a track in the axis direction of the production line. When the bag bottom is cut or manufactured, the forward moving speed of the trolley is consistent with the moving speed of the cylindrical bag body on the production line. On the path that the trolley moves forward, the bag bottom manufacturing equipment arranged on the trolley finishes all work of manufacturing the bag bottom, then returns to the initial position, waits for the flat bag body to pass through a certain length (determined by the design length of the filter bag), the trolley enters the forward movement stroke again, the fixed-length cutting device is started, the cylindrical bag body is cut, and the next bag bottom manufacturing process is carried out again.

The scheme of the special dust removal filter bag bottom manufacturing equipment matched with the bag body filter material and the production line is as follows: the bag is provided with a gathering device and a buckle press-locking device which gather into one bunch, or the cylindrical filter material which enables the cylindrical bag body to be made into a filter material at the end opening of one end of the bag bottom or enables the cylindrical filter material to be connected and extended with the bag body filter material, or the cylindrical filter material is provided with the buckle press-locking device.

The proposal of a gathering device and a buckling and pressing locking device is preferably provided. Namely, a working plane fixed with the base frame is arranged at a height position convenient for manual operation and maintenance on the base frame of the dust-removing filter bag bottom manufacturing equipment. The working plane is a support and working plane for entering the cylindrical bag body to be subjected to the bag bottom manufacturing procedure into the equipment, carrying out the bag bottom manufacturing procedure and moving out of the equipment. At least one gathering device is arranged on the working plane. The gathering device means: comprises at least one gathering template, a power transmission device, a position sensor device and a limiting device, wherein the gathering template is provided with a mouth groove which enables a cylindrical bag body (21) to penetrate into the gathering template and limits the gathering template to be finally gathered into a filter material gather, and the power transmission device, the position sensor device and the limiting device are connected with the gathering template. For example, the proposal shown in figure 7, the gathering device is provided with a movable gathering template (23) with a snap-fit push head and a U-shaped mouth groove, a sliding track thereof, and a cylinder and a limiting device connected with the sliding track. The power transmission device of the gathering template can be driven by various mechanical transmissions, such as an air cylinder, a hydraulic cylinder, a motor, an electric push rod and the like. The limiting device comprises a slide rail, a stop block and the like. The gathering device can also be composed of two or more gathering templates moving towards the same central direction. The gathering device enables the filter material surrounded by the opening groove of the gathering template to be more and more tightly squeezed, and finally the filter material becomes a dust-tight filter material gather. One of the gathering templates can be made into a symmetrical double layer, and the other gathering template is pushed in the space between the double layers, so that the filter material is stressed symmetrically.

If only the production of the non-pleated filter bag bottom is aimed at, a scheme with one or two gathering templates can be selected, preferably a scheme with two mutually opposite gathering templates with transverse U-shaped opening grooves. The reason is that: as described above, the non-pleated bag body is produced as a flat cylindrical bag body having a height approximately equal to the height of the two layers of filter material. The transverse U-shaped opening groove on the gathering template is fixed in the height direction. The height of the filter material dust pan depends on the design height of the filter material dust pan after the gathering is finished. The height of the filter material dustpan is several times of the height of the flat cylindrical bag body, so that the flat cylindrical bag body can completely penetrate through the transverse U-shaped opening groove of the dustpan gathering clamp. Therefore, the scheme of the gathering template with the two transverse U-shaped opening grooves is completely suitable for manufacturing and producing the non-folded bag bottom. The two horizontal U-shaped mouth grooves move relatively, and the limit is that the arc line sections of the U-shaped mouth grooves enclose a circle. The circle is the shape of the gathered filter material, so the design of the U-shaped arc line section depends on the circular cross section size of the flat cylindrical bag body with the minimum size to be processed after gathering. For the flat cylindrical bag body with larger size, the shape of the gathered section is an axisymmetric oblate surrounded by two arcs and two straight lines due to the limit of two straight edges of the U-shaped opening groove. The shapes of the two arcs are consistent with the arc segments of the two U-shaped opening grooves, and the length of the two straight segments of the section shape is determined by the volume of the gathering filter material.

The scheme provided with one gathering template is to use a buckle as a mouth groove of another gathering template, and as shown in the scheme shown in fig. 7, the scheme has the defects that the depth of the buckle is limited, the shape and the length of the buckle are closely related to the size of a cylindrical bag body, so that the structure is simple, the equipment cost is low, only a specific matched bag shape can be manufactured, and the universality is poor.

In consideration of the manufacture of the bag bottom of the pleated filter bag, another scheme is that three movable gathering templates, an immovable working plane provided with corresponding two gathering template slide rails and air cylinders fixed on a base frame and respectively connected with the three gathering templates are arranged to jointly form a gathering device as shown in fig. 11. The bottom surfaces of the two gathering templates are arranged on the slide rails of the working plane and move left and right in the same plane in opposite directions. The slide rail plays a supporting and limiting role for the two gathering templates. The bottom parts of the opposite sides of the two gathering templates are close to the parts of the sliding rails and are respectively provided with a semicircular opening groove, so that when the two gathering templates are aligned together, the two opening grooves on the two gathering templates are just spliced into a circle. And a third gathering template moving from top to bottom is arranged in front of the moving planes of the two gathering templates and above the working plane. The running plane of the third gathering template is close to the running planes of the first two gathering templates which move left and right as much as possible, and an opening groove is not needed to be arranged on the running plane. When the working is started, the upper gathering template, the left gathering template and the right gathering template are respectively positioned at the upper limit position, the left limit position and the right limit position (initial positions). At this time, the area of the hole formed by the three gathering templates and the fixed working surface is the largest. One end of the cylindrical bag body at the bottom of the prefabricated bag penetrates through the enclosed hole, at the moment, the upper gathering template moves downwards to reach a specified height position (the height depends on the height of the designed shape of the section of the cylindrical bag body after being gathered, but is not higher than the height of the openings of the left gathering template and the right gathering template), then the left gathering template and the right gathering template move towards the direction of the center line of the hole at the same time until the openings of the left gathering template and the right gathering template extrude the cylindrical bag body into a set shape which is tightly gathered into a bunch, and the cylindrical bag body is waited to be sleeved and locked by a buckle.

The three-panel nesting solution (e.g., the solution shown in fig. 11) is more suitable for producing the bottom of a pleated filter bag than the other one-panel or two-panel nesting solution (e.g., the solutions shown in fig. 7 and 10). The reason is that: as mentioned above, when producing the pleated filter bag, unlike the production of non-pleated bags, the cylindrical bag body entering the bag bottom manufacturing equipment of the dust-removing filter bag of the present case is not a flat cylindrical bag body. Due to the presence of the folds and the shroud, the folded cylindrical bag body is irregular in shape and has a height corresponding to the fold depth of the folded cylindrical bag body. In the scheme of the three gathering templates, the upper gathering template is movable and has a large stroke range, and when the upper gathering template is at an initial position, the corrugated cylindrical bag body can completely pass through the space below the upper gathering template, so that the gathering process is further carried out. Therefore, the three-piece gathering template scheme has higher universality.

If the dust-removing filter bag bottom manufacturing equipment is not connected to an automatic production line (on the automatic production line, the gathering of the cylindrical bag body and the part sleeved with the buckle can be controlled by position sensors such as an encoder), the cylindrical bag body is manually moved to enter the dust-removing filter bag bottom manufacturing equipment, and in order to enable the port of the cylindrical bag body (21) to be gathered into a bunch, the size of the filter material bunch is neat and consistent, and an auxiliary limiting plate can be arranged in front of the gathering template.

The bag bottom buckle binding device of the dust removal filter bag is simultaneously provided with a buckle pressure locking device, and the device is provided with at least one pressure locking pushing head capable of being pushed: such as the first push head (7), the second push head (13), and the third and fourth push heads (25) in fig. 5 to 11. The press locking pushing head can be in various shapes. Such as a shape that conforms to a snap shape; or the surface contacted with the buckle is provided with a groove; or the pressure lock slide that has the direction line, for example buckle (8) opening side's pressure lock pushing head will be responsible for the opening closure with the buckle, therefore its and buckle (8) contact site, can be equipped with the slide that two ends of direction buckle (8) slided and plastic deformation. Preferably, the material for manufacturing the pressure lock pushing head is wear-resistant material. If the push head of the press lock comprises a slideway structure, wear-resistant materials are used for manufacturing the slideway. The press lock pushing head and other components are assembled for replacement and maintenance (including the upper press lock pushing head 13 slideway in the scheme of fig. 5 and 6 and the press lock pushing head 25 slideway arranged on the gathering template 23 of fig. 7). When only one press lock pushing head is arranged, the press lock surface is required to be correspondingly arranged and fixed. The pushed push head and the push locking surface act together to finally compress and lock the buckle. The power transmission device for propelling can be in the form of various mechanical transmission mechanisms, such as a cylinder, a hydraulic cylinder, a motor, an electric push rod and the like. The other end of the power transmission device can be fixed on the base frame and can also be fixed on the gathering template. The buckle pressing and locking device is also provided with a sensor and/or a limiting device for controlling the working displacement of the pressing and locking pushing head.

In order to simplify the equipment and improve the working efficiency, the press lock pushing head and the corresponding gathering template of the gathering device can be manufactured or assembled into a whole respectively. As shown in the scheme of fig. 7, the gathering template 23 is integrally assembled with a right press lock pusher 25 provided with a slide way. The integration or fabrication herein includes the complete fabrication of the components as one part or assembly without relative motion, as well as the assembly with relative motion.

On the section of the bag body, the U-shaped or C-shaped buckle is opened upwards, downwards, leftwards or rightwards, and the buckle (8) is pushed by the downward pressing lock pushing head (7), the upward pressing lock pushing head (13), the right pressing lock pushing head (25) or the left pressing lock pushing head (25) correspondingly, so that the U-shaped or C-shaped buckle is sleeved on the cylindrical bag body filter material which is tightly gathered in a bunch along the opening direction. The pressure locking device then applies a huge pressing force to the buckle which is sleeved into the filter material dustpan until the buckle (8) is plastically deformed and is extruded and locked. The buckle (3) after plastic deformation exerts strong enough maintaining force on the filter materials gathered into a bunch, so that the squeezed filter materials can not penetrate dust absolutely. Meanwhile, the buckle (3) is ensured not to fall off in the working process of the filter bag.

In order to reduce the wear degree of the press locking pushing head, a multi-press locking pushing head scheme with multiple directions can be adopted, such as three press locking pushing heads or more. As shown in fig. 10 and 11, this scheme is a four-press lock pusher scheme that takes four directions. Further, as shown in fig. 9 and 10, the tip of the pusher head may be provided with a press-lock roller (12) to further reduce wear.

For the multi-direction press lock pushing heads, further, the pushing heads on both sides of the corresponding buckle can also be rotated in a vertical plane to increase the pressing component force (as shown in fig. 9).

The solution provided with a scooping device and a snap-lock device is preferred, because: the gathering clamp can enable the cylindrical bag body filter material to be gathered into a gathering shape before or in the process of sleeving the buckles. The buckle can be sleeved in, and the subsequent locking process of the buckle is simple, reliable and convenient to carry out, so that the buckle is suitable for automatic production of a production line, and the production cost is reduced.

The dust removal filter bag bottom manufacturing equipment provided by the scheme can be provided with only a buckle pressing and locking device without a gathering device. This simplifies the design and manufacturing costs of the device, but this solution requires the operator to manually gather the shapes, otherwise the snap would not fit in. Therefore, the scheme is not suitable for being connected with a production line, so that the full-automatic production line operation of manufacturing the bag body and the bag bottom is realized, and only manual operation and semi-automatic production can be realized. The scheme containing the gathering device enables the bag bottom manufacturing equipment to be connected into a production line, and the full-automatic production line operation of the filter bag is possible (a buckle conveying device and a storage device are also needed to be arranged). Even if under artifical supplementary semi-automatization production state, the production efficiency who is equipped with simultaneously and gathers pinch device and buckle and press the scheme of locking device also is higher than the scheme that only is equipped with buckle and presses the locking device far away.

The bag bottom manufacturing equipment of the dust removal filter bag can be provided with a buckle conveying device and/or a storage device. The buckle storage device plays a role in storing the buckle. The buckle conveying device plays a role in conveying the buckles for the buckle pressing and locking device. The buckle storage device can be a cuboid buckle storage box (10) or other shapes like a drum magazine or a clip-shaped buckle storage box. The buckle conveying device comprises a spring (9) which can be arranged in the buckle storage box to push the buckles (8) arranged in a row to be always pressed against the outlet of the buckle storage box (10); the buckle conveying device also comprises a pushing arm which pushes the buckle (8) out of the box outlet. Preferably, the push arm can be realized by a press-locking push head. The buckle conveying device also comprises a positioning baffle (6) or a sliding rail and the like which play a role in positioning and guiding the buckle (8) after the buckle is taken out of the box. The working principle is similar to that of an automatic firearm. Optionally, the gathering clamp can be used as a positioning baffle (6) when the buckle is taken out of the box, and the buckle storage box is correspondingly arranged below, above, on the left or on the right of the cylindrical bag body of the bag body according to the direction of the opening of the buckle.

Preferably, the pressing lock pushing head on the opposite side of the opening of the buckle (8) is firstly responsible for pushing the buckle (8) out of the box outlet end of the buckle storage box (10), then pushing the buckle (8) to be sleeved on the filter material which is tightly gathered into a bunch, and finally participating in the action of extruding and locking the buckle (8), so that the part of the pressing lock pushing head, which is in contact with the buckle, needs to be manufactured into a shape which is matched with the contact surface of the buckle, and a guide baffle needs to be additionally arranged if necessary. Meanwhile, the pressure lock pushing head can be provided with patterns on the basis of the shape matched with the contact surface of the buckle so as to increase the friction force between the pressure lock pushing head and the buckle. The purpose of increasing the friction force is to avoid the phenomenon that the buckle rolls due to uneven stress in the next step, namely the buckle pressing and locking process. The scheme that a gathering device, a buckle storage device and a buckle conveying device are preferably arranged for connecting the dust-removing filter bag bottom manufacturing equipment to a production line so as to meet the working condition requirement of full-automatic production line operation for manufacturing the filter bag. For the working condition requirements of the bag bottom manufacturing equipment of the dust removal filter bag in manual auxiliary operation (semi-automatic production), the gathering device, the buckle storage device and the buckle conveying device can be randomly selected and configured according to the requirements, or one or more of the schemes can be randomly combined.

The bag bottom manufacturing equipment of the dust removal filter bag is provided with buckles which can be made of various metal materials, various sections and various shapes. The buckle can be made of various metals such as common carbon steel, stainless steel, aluminum alloy or steel subjected to surface treatment (such as galvanization). The metal material can be flat steel, wire rod and other sections. Preferably, the buckle is made into a U-shaped or C-shaped buckle. The buckle (8) needs to be specially manufactured, punched or bent into a specific U-shaped or C-shaped shape, and the materials and relative sizes of the buckle for a specific filter bag are determined through experiments so as to facilitate the nesting of the buckle and guide the deformation of the buckle. The U-like or C-like buckle (8) can be made into a shape that the extension lines of the two ends of the opening do not intersect at one point, such as a spiral shape when viewed from the side. Therefore, the two ends of the buckle (8) can be fastened in a staggered mode when being locked by pressing. Correspondingly, a guide groove for guiding the dislocation and compaction of two ends of the buckle (8) can be manufactured on the press locking pushing head contacted with the opening side of the buckle (8). The buckle (8) can also be made into a mode that the extension lines at the two ends of the buckle are intersected in space. Since the buckle moves along the surface of the gathering clamp in the process of being pressed by the pressure lock pushing head, in order to realize dislocation and overlapping pressing of the two ends of the buckle opening, as shown in fig. 13, a convex bump (14) (such as a sloping wedge) can be arranged at the corresponding position of the surface of the gathering clamp, so that the two ends of the buckle are staggered, overlapped and intersected.

The U-like shape is composed of two parallel straight edges and an arc or a plurality of broken line edges, and the ends of the two straight edges are free ends. For example, two straight edges are connected through an arc-shaped edge, and the central angle corresponding to the arc-shaped edge can be 30-270 degrees; preferably, the arcuate edges have a corresponding central angle of 60-180 °. The two straight edges can be on one plane or on two planes with an included angle of 0-30 degrees.

The C-like shape is an open circle or an oval or consists of a plurality of sections of broken lines. If the opening is circular, the corresponding central angle of the opening portion may be 15-90 °. Preferably, the opening portion has a corresponding central angle of 30 to 60 °. The two open ends of the C-like shape can be on a plane or on two planes with an included angle of 0-30 degrees.

After the buckle is manufactured, organic silicon can be sprayed on the surface of the buckle according to the requirement so as to improve the corrosion resistance of the buckle. In the experiment, the organic silicon coating has good ductility, and in the process that the buckle is locked by the pressure lock pusher clamp, the coating can not be peeled off and fall off due to buckle deformation, and an ideal effect is achieved.

The buckles can also be glued into a row by glue aiming at the form of the buckle storage device. Similar to the principle of a staple, the buckles adhered into a row are easy to load, and the loading efficiency can be greatly improved. The manufacturing equipment for the bag bottom of the dust-removing filter bag can be provided with a shearing device for shearing a fixed-length cylindrical bag body, wherein the shearing device is controlled by a production line and can be matched with other components and sensors of the production line to shear the filter bag body with a fixed length and a fixed size. The shearing device relies on the relative movement of the shearing blades (22) to shear the bag body filter material. The cutting of the bag body of the filter bag can be finished at one time, but the cutting can also be finished in a plurality of times (a plurality of cutting devices can be arranged) if the cutting is required to meet the transportation requirement of a production line. For example, the cutting can be completed in two times, two cutting devices can be arranged, most parts of the flat cylindrical bag body (21) are cut from the two edges to the middle for the first time, and only a small part (for example, 10mm of width) in the middle is reserved so as to keep the forward and backward transportation continuity of the filter materials of each section of the bag body. And cutting the whole material again for the second time.

In summary, the device of the present invention can be used independently, and can be defined as semi-automatic. The filter bag can also be arranged in a filter bag production line, and the production line is fully automated. The invention eliminates the needle hole and the cloth seam channel of the filter bag in principle, and can fundamentally solve the problem that the filter efficiency of the filter bag is far lower than that of the filter material. More importantly, the method can realize full-automatic production line operation, simultaneously solves the problem that the existing bag bottom manufacturing industry can only carry out single-process manual operation, eliminates a large number of bag bottom sewing stations and sewing equipment, and can save 20-50% of investment and maintenance compared with the original manufacturing process; labor force and workshop occupation are liberated, and 2-4 sewing stations and personnel allocation can be saved in each bag body automatic production line compared with the original manufacturing process. The production efficiency of the bag body and the belt bottom can reach 750 per hour on the premise of not improving the labor cost, and if each automatic bag body production line is provided with 3 bag bottom sewing stations according to the original process and each person manufactures 30 bag bottoms per hour for calculation, the new process can improve the production efficiency by more than 8 times; the bottom part of each filter bag can save the processing cost of workers by 5-1 yuan, and the production cost is greatly reduced.

By utilizing the method and the equipment, the invention further provides a novel filter bag with a sealed bag bottom buckled and tied, which comprises a cylindrical bag body, a bag opening and a bag bottom, and is characterized in that: the filter material forming the bag bottom is a cylindrical filter material of the bag body close to the bottom end part, and the bag bottom and the bag body are integrated. If a reinforcing layer is required to be added according to the requirements of working conditions, one part of the filter material forming the bag bottom is the filter material at the part of the cylindrical bag body close to the bottom end, and the other part is an additional filter material which is made into a cylindrical shape and sleeved at the lower end of the filter material of the cylindrical bag body; or an additional cylindrical filter material is connected to the bottom end of the cylindrical bag body and extends out. The shape of the bag bottom is a bunch of tightly gathered bags. And a locking part is arranged outside the scooping filter material, so that the scooping filter material can be locked and kept firmly together.

Preferably, the filter material forming the bag bottom is the filter material of the bottom end part close to the cylindrical bag body, and the bag bottom and the filter material of the bag body are integrated, so that sewing is not needed when the bag bottom is manufactured, needle holes cannot be generated, and the problem of needle hole dust exhaust is fundamentally eliminated. The outside of the bag bottom is fastened by a locking part, the fastening force is huge, cloth seam gaps among a bunch of filter materials forming the bag bottom can be completely eliminated by extrusion, and the problem of a dust discharge channel of the cloth seam gaps is solved.

The locking part arranged outside the bag bottom is a buckle, as mentioned above, the shape of the buckle before buckling can be similar to U shape or C shape, the buckle can be deformed after being extruded, and two ends of the opening of the buckle are overlapped in a staggered way and tightly tied on a bunch of filter materials at the bag bottom; or the shape of a beer bottle cap is similar, a bunch of filter materials at the bottom of the whole bag is put in and wrapped by the opening, and the opening is tightly stuck and tied with the bunch of filter materials after extrusion.

The beer bottle cap-like shape comprises a bottom and a buckling part, wherein the bottom is annular or oval, and the buckling part is annular and connected with the bottom.

As described above, two ends of the U-like or C-like buckle can be made into a spiral shape, that is, the shape formed by the two ends is a part of a spiral line when viewed from the side of the U-like or C-like buckle; preferably, the two ends of the opening of the U-shaped or C-shaped buckle are inclined forwards at one end and backwards at a certain angle at the other end, so that the two ends of the buckle can be dislocated when being fastened on the bag bottom.

The locking parts arranged outside the bag bottom can also be rope parts which can be tightly bound outside a bunch of filter materials to ensure that the rope parts are firmly gathered together. The rope-like member includes various materials such as a rope or a wire made of metal or fiber, etc. The section of the rope is a rope, a rope or a line with various shapes.

The utility model discloses dust removal filter bag has following several advantages: firstly, the bag bottom and the bag body are integrated, so that the sewing by using needle threads is not needed, the needle hole is not generated, and the problem of a dust exhaust channel of the needle hole is solved. And secondly, no gap is formed, a bunch of filter materials at the bottom of the bag is fastened by using fasteners or ropes, cloth seams among the filter materials are extruded to the minimum by the fastening force, the cloth seam gaps can be eliminated, and the problem of dust discharge of the cloth seam gaps is solved. The production efficiency is high, the cost is low, mechanical production can be carried out on the bag bottom of the filter bag by using mechanical equipment, automatic production line operation is realized, the production efficiency can be higher than the manual production mode of the conventional bag bottom, labor force is liberated, and the production cost is saved.

The bag type dust removal is a typical industry driven by policy, and under the era background that Beijing jin Ji and a 2+26 city in the peripheral area execute special emission limit values of atmospheric pollutants, lower emission becomes a main research and development direction of industrial technology upgrade, and the production of a bag type dust removal enterprise is more busy in 2017 than in the past year. According to the survey, more than 150 registered enterprises engaged in the bag house industry in 2017, of which more than 100 fiber and filter media were engaged. The total value of the industry in 2017 is about 160 million yuan, and the total export amount is about 10 million yuan. The bag bottom of the filter bag produced in the industry is made of sewing needles and threads, so that the limit is caused for lower emission, and the requirements of dust removal products in the blue sky defense war and the atmospheric attack and hardening war cannot be met.

The dust removal filter bag is used as a core component in bag type dust removal and is the key point for researching lower emission. The utility model discloses a change two hundred years and will adopt the trade of making up technology to become the (so far, all make for the sewing of needle thread at the bottom of the filter bag that bag collector trade produced) natural with cloth (filter material) production sack (filter bag), abandon the research and development route of the low row technique of various filter bags of development in recent years, all be promptly after having formed eye of the needle and cloth seam, adopt the rubber coating again, the method of banding goes the shutoff, open up a new way in addition and provide a filter bag of detaining at the bottom of the sealed bag. The bag bottom of the filter bag has no needle holes or gaps, and the problems of needle holes and gaps dust exhaust passages in the production of the bag bottom of the inherent filter bag are solved.

At present, the domestic environmental problem is serious, especially the haze problem, and the pollution that industrial production caused is one of the leading reasons for producing environmental problems such as haze. The existing dust removal filter bag is limited by the problems of needle holes and cloth seams for dust removal in industrial production, the filter performance cannot meet the requirement of lower emission, and if the filter bag with the buckled bag bottom provided by the scheme is replaced, the requirement of lower emission can be met, the total dust emission amount in industrial production can be greatly reduced, and the influence of industrial production pollution on the environment is reduced. Moreover, the filter bag with the buckled bag bottom can realize automatic production line operation, can greatly reduce the production cost of enterprises, and brings higher benefits to the bag type dust removal industry.

Drawings

The invention has 13 pages as attached drawings, and 13 pages in total:

FIG. 1 is a schematic diagram of a prior art filter bag bottom manufacturing technique for sewing a cylindrical bag body and a circular bag bottom cloth.

FIG. 2 is a schematic diagram of a filter bottom after sewing is completed by the conventional filter bag bottom manufacturing technology.

FIG. 3 is a schematic view of the bottom end of a cylindrical bag body before being fastened in accordance with the embodiment 1.

Fig. 4 is a schematic view of the bag bottom of the filter bag after being fastened according to the technical scheme of fastening the bag bottom in embodiment 1.

Fig. 5 is a schematic view of the upper and lower press-locking pushing heads in the direction of filter bag operation.

Fig. 6 is a sectional view taken along line a-a of fig. 5.

Fig. 7 is a schematic view from direction a-a of fig. 8.

FIG. 8 is a schematic view of the top view of a flat tubular bag body with left and right push-locks.

Fig. 9 is a schematic diagram of two sets of pressure lock actuating cylinders and pressure lock rollers respectively arranged on the left and right pressure lock pushing heads.

Fig. 10 is a schematic view of two gathering templates and four pressing lock pushing heads, which are arranged on the upper portion, the lower portion, the left portion and the right portion.

FIG. 11 is a schematic view of a triple pinch template and four-way locking push heads, which are arranged up, down, left and right.

Fig. 12 is a schematic view of the use of a cord-like member to seal the bottom of the bag.

Fig. 13 is a schematic view of a gathering template with bumps.

1-cylindrical bag body 2-bag body bottom end port 2' -gathering one bunch of bag body bottom end port 3-plastic deformation buckle 4-bag bottom filter material 5-suture 6-buckle positioning plate 7-downward pressing lock pushing head 8-buckle 9-spring 10-buckle storage box 11-pressing lock actuating cylinder 12-pressing lock rolling wheel 13-upward pressing lock pushing head 14-lug 15-opening groove 16-gathering template air cylinder 17-upper gathering template 18-pressing lock pushing head slideway 19-downward pressing lock pushing head groove 20-base frame wire 21-flat cylindrical bag body 22-shearing edge 23-right gathering template 24-left gathering template 25-left and right pressing lock pushing head 26-metal wire hoop 27-metal wire knot 28-29-working plane 30-sliding rail.

Detailed Description

The following examples are further illustrative of the present invention, but the present invention is not limited thereto.

Example 1

As shown in figures 3 and 4, a port 2 at one end of the bottom of the cylindrical bag body 1 is tightly gathered to the middle to form a bunch 2' by external force, and then a C-shaped buckle 8 made of metal is sleeved on the gathered filter material. The C-shaped clasp 8 used in this embodiment is helical in shape when viewed from the side. Then, strong external force is used to make the inner diameter of the C-shaped buckle 8 contract inwards to generate larger plastic deformation, and the two ends of the C-shaped buckle are overlapped in a staggered way, and the end port 2' at the bottom end of the bag body gathered together is fastened and locked. After the buckle 3 after plastic deformation loses external force and recovers partial deformation, a stable state shape capable of resisting certain external force is formed, and the state that the filter materials gathered into a bunch are tightly squeezed together can be still kept, so that a channel through which dust does not pass is ensured. In addition, the tightening degree also needs to ensure that the buckle can not fall off from the tightening filter material.

Example 2

As shown in figure 10, after the shear blade 22 of the shearing device shears the bag body port which is used as the bag bottom, the travelling mechanism (also called a trolley) of the equipment disclosed by the patent synchronously moves forward according to the moving speed of the filter material in the production line, and the right gathering template 23 and the left gathering template 24 move oppositely to push towards the middle part at the position 2-5cm away from the bag body port until the cylindrical bag body filter material is tightly squeezed into a bunch. The squeezing degree is based on the dust tightness and the fact that the filter bag cannot fall off in the working state. The maximum propelling force can be preset by the transmission mechanism. The transmission mechanism can be in various transmission forms such as an air cylinder, a hydraulic cylinder, a motor and the like.

A spring 9 in the buckle storage box 10 pushes the buckle 8 out to be positioned on the buckle positioning baffle 6, the opening of the buckle 8 faces upwards, the lock pushing head 7 is pressed downwards to push upwards, and the positioned buckle 8 is pushed upwards and is abutted against the filter material bunch extruded into one bunch. Then the left and right push heads 25 move oppositely to push the buckle 8 towards the middle part, and the two wings of the buckle 8 move inwards and tilt. The locking pushing head 13 is pressed upwards and then moves downwards to extrude the two ends of the buckle, so that the buckle is closed and locked. Then all the press-locking push heads are withdrawn from restoration, the right and left gathering templates 23 and 24 are withdrawn from restoration, and the filter bag is off-line before the bag bottom of the filter bag is manufactured. And entering the next manufacturing period of the filter bag in the same way, and repeating the steps in the same way.

Example 3

As shown in fig. 9, unlike embodiment 2, the present embodiment does not have the upper push lock ram 13, and the left and right push lock rams are respectively formed of two sets of push lock cylinders 11 and a push lock roller 12. Each set of pressure locking actuating cylinder can realize the omnibearing continuous extrusion of the buckle 8 through the hinging and the moving of the push rod, and finally the locking is finished.

Example 4

As shown in fig. 7 and 8, unlike embodiment 1, the present embodiment does not have the upper push lock head 13 and the lower push lock head 7, and one of the left and right push lock heads 25 (the right push lock head) is integrally formed with the right pinch mold plate 23 by an assembling method so as to move along with the right pinch mold plate 23. The left press-locking push head 25 and the buckle 8 pushed by the left press-locking push head replace the function of the left gathering template 24. Left press lock ram 25 first pushes clasp 8 out of clasp storage case 10 and gathers filter material in motion. Therefore, the right gathering template 23 moves towards the middle to gather the filter material, and simultaneously, the whole process that the left pressing locking push head 25 and the right pressing locking push head 25 extrude the buckle 8 and lock the buckle is completed.

Example 5

As shown in fig. 11, an immovable work plane 29 is provided on the base frame 28 at a height suitable for the production line and manual handling. The working plane 29 is provided with a slide rail 30 for supporting and limiting the two gathering templates to slide on. Two right and left gather templates 23 and 24 are provided on the slide rail 30 to be slidable left and right. When the two gathering templates work, the two gathering templates move oppositely in the same plane. The bottom parts of the opposite sides of the two gathering templates are close to the parts of the slide rails 30, and semicircular opening grooves 15 with the diameter of 20mm are respectively arranged, so that when the two gathering templates are aligned together, the two opening grooves 15 on the two gathering templates are just spliced into a circle. A gathering template cylinder 16 is respectively arranged on the left side of the left gathering template 24 and the right side of the right gathering templates 23, and the gathering template cylinder 16 is fixed on a base frame 28. The stroke of the left and right gathering template cylinders 16 is 150mm, so that the maximum opening of the left and right gathering templates is 300 mm. The bag bottom processing method is suitable for processing flat cylindrical bag bodies (with the width of 250mm) or folded cylindrical bag bodies (with the width of 230mm-270 mm) with the diameter of 160mm and bag bottoms of various filter bags with the diameters smaller than the width of 160 mm. And a third gathering template moving from top to bottom, namely an upper gathering template 17, is arranged in front of the moving plane of the left gathering template and the right gathering template and above the working plane. The upper gathering template 17 is close to the left and right gathering templates 23 and 24, and is not provided with an opening groove. An upper gathering template cylinder 16 is connected to the top of the upper gathering template 17. According to practical experience, the final cross-sectional shapes of the filter materials of the filter bags in various shapes are not smaller than a circle with the diameter of 20mm after gathering, so that the lower limit position of the upper gathering template 17 is only 20mm away from the working plane, which is the reason why the mouth grooves 15 of the left and right gathering templates are designed to be semicircular arcs with the diameter of 20 mm. The upper pinching plate cylinder 16 is therefore selected to be of a type with a stroke of 175mm so that the bottom edge of the upper pinching plate 17 is 195mm from the work plane when it is lifted to its uppermost position. Thus, the equipment can adapt to the processing of the bag bottom of various cylindrical bag bodies 1 with the height of less than 195mm, including the pleated filter bag.

An upper, a left and a right pressure locking actuating cylinders 11 are respectively arranged on the upper, the left and the right gathering templates. The cylinders are respectively assembled on the corresponding gathering templates and are relatively static with the corresponding gathering templates during operation. The head parts of the push rods of the upper, left and right pressure lock actuating cylinders 11 are respectively assembled and connected with an upper pressure lock pushing head 13, a left pressure lock pushing head 25 and a right pressure lock pushing head 25 so as to be convenient for replacing the pressure lock pushing heads. The contact surfaces of the left and right press lock pushing heads 25 and the buckle 8 are provided with press lock pushing head slideways 18 with the height of 20mm and arc-shaped sections. Due to different bag shapes, the shapes of the buckles 8 and the lengths of the used wires are different, but the 20mm pressing lock pusher slideway 18 can be suitable for various conditions. The working surface of the upper pressing locking pushing head 13 is a rectangular plane with the size of 20mmX50 mm. The flat surface is enough to contact with and press the two ends of the C-like buckle 8 overlapped after deformation. The stroke of the pressure locking actuating cylinder 11 of the three-pressure locking pushing head is 25 mm. When the upper gathering template 17 reaches the lower limit position, the lower limit position of the upper pressing lock pushing head 13 is only required to be 20mm away from the working plane 29. The left and right pressure lock push actuating cylinders 11 and the left and right gathering template cylinders 16 are provided with limit stops on the stroke of the 4 cylinders. To prevent excessive bunching or clipping, which can lead to damage to the filter material. The limit positions of the left and right pressing lock pushing heads 25 are the positions corresponding to the 20mm diameter circular holes surrounded by the opening slots 15. All the stop block positions can be adjusted within the bag-shaped change range, and the stop block positions can be adjusted on site according to the bag-shaped production requirement.

The lower part of the lower pressing lock pushing head 7 is assembled and connected with a lower compression actuating cylinder 11, and the lower compression locking actuating cylinder 11 is fixed on a base frame 28. The push head 7 moves along the positioning plate 6 fixed on the base frame 28, and the upper limit position of the push head is the position where the working surface of the push head 7 is flush with the working plane 29. The stroke of the lock cylinder 11 is 100 mm. The working plane of the push head 7 of the push lock is provided with a lower compression push head groove 19 which can accurately push one buckle 8. At the same time, the groove is interrupted (i.e. patterned) to increase its friction with the catch 8. The purpose is that in the step of locking the buckle by pressing, the buckle can not roll due to uneven stress.

The front of the buckle positioning plate 6 is provided with a buckle storage box 10. The buckle storage box 10 is assembled and connected with the buckle positioning plate 6, so that the filter bags of different models can be replaced due to different buckle models. Buckle bin 10 leaves buckle transfer passage with buckle locating plate 6's junction, because the both ends extension line non-intersect of class "C" shape buckle 8, transfer passage's one end is wider than the other end to buckle 8 can pass through smoothly with pushing down lock pusher 7. The buckle storage box 10 is internally provided with a buckle conveying spring 9 which always pushes the buckle against the buckle positioning guide plate.

Generally, the scheme comprises 3 gathering templates, 4 pressing lock pushing heads, 7 cylinders, a buckle storage box and a buckle conveying device formed by buckle conveying springs, a lower pressing lock pushing head, a buckle positioning plate and the end face of the storage box.

In practical use, the buckle 8 is a Q235 steel wire with a 4.2mm thick section and a circular shape, so that the buckle sealing (550 gram weight, 1050mm cloth width) of the bag bottom of the folded terylene filter bag with the diameter being 160mm double in area can be met, and all bag shapes smaller than the cloth width can be better met.

When the working is started, the upper, left and right gathering templates 17, 24 and 23 are respectively positioned at the upper, left and right limit positions (initial positions). At this time, the area of the hole surrounded by the three gathering templates and the fixed working plane 29 is the largest, namely, 300mmX195mm square holes. One end of the cylindrical bag body 1 with the bag bottom preprocessed is moved along the working plane 29 and passes through the enclosed hole. When the position of the bag bottom which needs to be tightly gathered into a bunch is reached, the upper gathering template 17 moves downwards firstly at the position 40mm away from the bottom end port of the cylindrical bag body of the left and right gathering templates 24 and 13, and the lower limit position is reached. Then the left and right gathering templates 24, 23 move towards the central line direction of the holes at the same time until the stoppers touch and stop. The upper opening groove 15 and the upper gathering template 17 extrude the cylindrical bag body into a shape tightly gathered into a gather, the end surface of the cylindrical bag body is an oblate shape enclosed by two straight edges and two semicircular arcs with the diameter of 20mm, the length of the straight edges depends on the number of the cloth materials, and the minimum length is 0. The lower pressing lock pushing head 7 moves upwards from the initial lower limit position, penetrates through the buckle storage box 10 and the buckle conveying channel in the moving process, pushes out the buckles 8 attached to the buckle positioning plates 6 until the working surface of the lower pressing lock pushing head 7 is flush with the working plane 29, and the lower locking lock pushing head 7 performs customized movement and keeps the position. At this time, the buckle 8 is already sleeved outside the filter material dustpan 2' in the gathering template. Then the left and right press lock push heads 25 move towards the middle, and the C-shaped buckle 8 is extruded and deformed until the bottom of the stroke is reached or the stop block is touched. At this time, the two ends of the buckle 8 are staggered and crossed and are tightly extruded by the lower, the left and the right 3 press lock pushing heads. Finally, the upper pressing locking pushing heads 13 move oppositely until reaching the lower limit position, and the fasteners 8 crossed in a staggered mode are ironed and tightly hooped on the filter material dustpan 2' to form a sealed bag bottom. And resetting all the cylinders, and preparing to enter the next bag bottom production process in a repeated way.

Example 6

As shown in fig. 12, the difference from the embodiment 1 is that a bunch of filter media is tightly wound and tightened by a metal wire to form a metal wire hoop 6, then both ends of the metal wire are tied and locked to form a metal wire knot 7, and finally the bunch of bag bottom end 2' is tightened and locked. It should be noted that the knotted part 7 of the metal wire needs to be hidden so that it will not damage itself and other filter material of the filter bag during transportation, installation and use. The scheme also ensures that the metal wire hoop 6 and the knot can not fall off from the tightening filter material under the passage through which dust does not pass and the working state.

Example 7

The rest is the same as example 1. Except that a U-shaped buckle is used for replacing a C-shaped buckle.

Claims (12)

1. A method for manufacturing a bag bottom of a dust removal filter bag is characterized in that: the end opening of one end of the cylindrical bag body, at which the bag bottom is to be made, is provided with filter materials, including the cylindrical filter materials which are connected and extended with the bag body filter materials at the position, and the filter materials are tightly gathered into a bunch to form a sealed bag bottom.
2. The method of making a dust filter bag bottom according to claim 1, wherein: and binding the filter materials which are tightly gathered into a bunch by ropes or locking by buckles.
3. The method of manufacturing a dust filter bag bottom according to any one of claims 1 and 2, wherein: and arranging the bag bottom manufacturing equipment for realizing the method for manufacturing the bag bottom of the dust-removing filter bag after the production process of the cylindrical bag body to form a part of a filter bag production line, matching the period for manufacturing the bag bottom with the storage capacity of a cloth storage rack on the production line, or arranging the bag bottom manufacturing equipment on a trolley, wherein the trolley moves linearly and reciprocally on the axis of the production line, and the forward moving speed is consistent with the moving speed of the cylindrical bag body on the production line.
4. The utility model provides a preparation equipment at bottom of dust removal filter bag which characterized in that: the bag is provided with a filter material for making the port of the bag body, a cylindrical filter material which is connected and extended with the filter material of the bag body at the position, a gathering clamp device and a buckle press-locking device which gather into one bunch, or a buckle press-locking device.
5. The dust removal filter bag bottom manufacturing device according to claim 4, wherein: a buckle conveying device and/or a storage device are/is arranged.
6. The dust removal filter bag bottom manufacturing device according to claim 4, wherein: the equipment is provided with a U-shaped or C-shaped buckle which can be made of various metal materials and has various sections.
7. The dust removal filter bag bottom manufacturing device according to claim 4, wherein: the gathering clamp device is provided with at least one gathering template.
8. The dust removal filter bag bottom manufacturing apparatus according to claim 7, wherein: the press lock pushing head and the gathering template are manufactured into a whole.
9. The utility model provides a detain filter bag of bundling sealed bag end, includes at the bottom of tube-shape bag body, sack, the bag, its characterized in that: the filter material part or whole of bag bottom is the filter material that the bottom end portion was close to the tube-shape bag body, or connects the tube-shape filter material that the tube-shape bag body extends, and the structural configuration of bag bottom is for tightly gathering together a tuft, is equipped with locking class part in this tuft of filter material's outside.
10. The filter bag with a sealed bag bottom according to claim 1, wherein: the locking part is a buckle and is made of metal materials, and the shape of the buckle before buckling is similar to a U shape or a C shape or a beer bottle cap shape.
11. The filter bag with a sealed bag bottom according to claim 2, wherein: the two ends of the locked U-shaped or C-shaped buckle are mutually overlapped and dislocated.
12. The filter bag with a sealed bag bottom according to claim 1, wherein: the locking part is a rope, and comprises a rope, a rope or a line.

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