阅读说明：本技术 一种带废热回收利用的工业废气净化处理设备 (Industrial waste gas purification treatment equipment with waste heat recycling function ) 是由 赖汉龙 于 2021-09-06 设计创作，主要内容包括：本发明公开了一种带废热回收利用的工业废气净化处理设备,其结构包括底座、处理机、进气口、排气口,底座顶面与处理机底面焊接连接,本发明通过处理机内的热回收管来进行废气热回收,并使废气流过净化板,通过净化罩上的化学涂层来对废气进行无害化处理,在废气灌入的过程中,会通过废气产生的压力推动清除头,使其在受风板产生的推力作用下向后移动,并最终通过反弹球反弹,使伸出头伸出管壁,并略微扩开同时产生震动,对粘附在净化罩外层的生石灰层进行清除抖落,在进行废气输入的过程中可以反复进行,有效避免生石灰粉末粘附在净化板上而影响对废气中的其他有害物质的清除效果,同时避免受水气影响而生热损坏净化罩。(The invention discloses an industrial waste gas purification treatment device with waste heat recycling, which structurally comprises a base, a processor, an air inlet and an air outlet, wherein the top surface of the base is welded and connected with the bottom surface of the processor, the invention carries out waste gas heat recycling through a heat recycling pipe in the processor, waste gas flows through a purification plate, the waste gas is subjected to harmless treatment through a chemical coating on a purification cover, in the waste gas filling process, a cleaning head is pushed by the pressure generated by the waste gas to move backwards under the thrust action of a wind plate, and finally, an extending head extends out of a pipe wall and slightly expands to generate vibration through bounce of a bounce ball, so that a quicklime layer adhered to the outer layer of the purification cover is cleaned and shaken off, the waste gas can be repeatedly input, and the influence of quicklime powder adhered to the purification plate on the cleaning effect of other harmful substances in the waste gas is effectively avoided, meanwhile, the cleaning cover is prevented from being damaged by heat generated due to the influence of water vapor.)

1. The utility model provides a take waste heat recovery's industrial waste gas purification treatment facility, its structure includes base (1), processor (2), air inlet (3), gas vent (4), its characterized in that:

the top surface of the base (1) is connected with the bottom surface of the processor (2) in a welding manner, the right side of the air inlet (3) is communicated with the left side of the processor (2) and is connected with the left side of the processor by electric welding, and the left side of the air outlet (4) is communicated with the right side of the processor (2) and is connected with the right side of the processor by electric welding;

the processor (2) comprises a shell (21), a scraping handle (22), a heat recovery pipe (23) and a purification plate (24), wherein the shell (21) is internally movably connected with the top of the scraping handle (22), the heat recovery pipe (23) is embedded into the inner layer of the shell (21), and two ends of the purification plate (24) are fixedly connected with the inner layer of the shell (21).

2. The industrial waste gas purification treatment equipment with waste heat recovery and utilization as claimed in claim 1, wherein the industrial waste gas purification treatment equipment is characterized in that: the purification plate (24) comprises a fixing block (241), a purification cover (242) and an air passing pipe (243), the upper end and the lower end of the inner layer of the fixing block (241) are fixedly connected with the purification cover (242) in an embedded mode, and the air passing pipe (243) is embedded into the purification cover (242).

3. The industrial waste gas purification treatment equipment with waste heat recovery and utilization as claimed in claim 2, wherein the industrial waste gas purification treatment equipment is characterized in that: the air passing pipe (243) comprises a pipe wall (A1), a rebound ball (A2), an elastic belt (A3) and a clearing head (A4), wherein the rebound ball (A2) is embedded into an inner layer of the pipe wall (A1), the top end of the elastic belt (A3) is fixedly connected with the inner layer of the pipe wall (A1), and the bottom end of the elastic belt (A3) is fixedly connected with the right side of the clearing head (A4).

4. The industrial waste gas purification treatment equipment with waste heat recovery and utilization as claimed in claim 3, wherein the industrial waste gas purification treatment equipment is characterized in that: clear away head (A4) including bottom block (A41), compression frame (A42), wind-receiving plate (A43), stretch out head (A44), bottom block (A41) left side is inlayed with compression frame (A42) right side and is firmly connected, compression frame (A42) left side is inlayed with the head (A44) right side and is firmly connected, wind-receiving plate (A43) bottom surface is embedded in stretching out head (A44) top surface.

5. The industrial waste gas purification treatment equipment with waste heat recovery and utilization as claimed in claim 4, wherein the industrial waste gas purification treatment equipment is characterized in that: the extension head (A44) comprises a tensioning block (B1), a friction block (B2), a rolling ball (B3) and a shredding piece (B4), wherein the top surface of the tensioning block (B1) is fixedly connected with the bottom surface of the friction block (B2), the outer ring of the rolling ball (B3) is in mutual contact with the inner layer of the tensioning block (B1), and the right side of the shredding piece (B4) is fixedly connected with the left side of the tensioning block (B1).

6. The industrial waste gas purification treatment equipment with waste heat recovery and utilization as claimed in claim 1, wherein the industrial waste gas purification treatment equipment is characterized in that: the scraping handle (22) comprises a pressure spring (221), an outer layer ring (222), a pulling column (223), a sliding shaft (224) and a scraping head (225), the left end of the pressure spring (221) is welded with the outer ring of the outer layer ring (222), the inner ring of the outer layer ring (222) is fixedly embedded with the outer ring of the sliding shaft (224) through the pulling column (223), and the top surface of the scraping head (225) is fixedly embedded with the outer ring of the outer layer ring (222).

7. The industrial waste gas purification treatment equipment with waste heat recovery and utilization of claim 6, characterized in that: scrape head (225) including connecting handle (C1), layering (C2), dop (C3), scrape board (C4), connecting handle (C1) left side top is embedded with layering (C2) right-hand member and is connected, layering (C2) right side with scrape board (C4) right side top and be connected, connecting handle (C1) bottom is through dop (C3) and scrape board (C4) right side bottom activity block.

8. The industrial waste gas purification treatment equipment with waste heat recovery and utilization as claimed in claim 7, wherein the industrial waste gas purification treatment equipment comprises: scrape down board (C4) and include loading board (C41), outer pushing frame (C42), cut into head (C43), scrape and get piece (C44), loading board (C41) inlayer is embedded with outer pushing frame (C42) right side and is connected admittedly, outer pushing frame (C42) left side is embedded with cut into head (C43) right side and is connected admittedly, scrape and get piece (C44) top surface and loading board (C41) bottom surface welded connection.

Technical Field

The invention relates to the technical field of industrial harmful waste gas control, in particular to an industrial waste gas purification treatment device with waste heat recycling function.

Background

Industrial waste gas is harmful gas generated in the industrial production process, the inside of the industrial waste gas often contains various substances harmful to human bodies or environment, the industrial waste gas can be discharged to the outside only after being purified, otherwise serious environmental pollution can be caused, meanwhile, some industrial waste gas has higher temperature, the heat in the waste gas can be recycled, when the industrial waste gas generated in a quicklime plant is purified, because the industrial waste gas in the quicklime plant often contains quicklime components, when the industrial waste gas is pumped into the purification treatment equipment, part of quicklime powder can be adhered to the surfaces of an inlet pipeline and a treatment structure, a loose quicklime powder layer is easily formed after long-term accumulation, and the quicklime powder layer continuously reacts with moisture components pumped into the waste gas to form a compact slaked lime layer with strong adhesion, and a large amount of heat is emitted, not only will the rate at which the exhaust gas enters the treatment be affected, but the life of the purification treatment equipment will also be reduced by the heat generation.

Disclosure of Invention

In order to solve the problems, the invention provides an industrial waste gas purification treatment device with waste heat recycling function.

In order to achieve the purpose, the invention is realized by the following technical scheme: the industrial waste gas purification treatment equipment with waste heat recycling comprises a base, a processor, an air inlet and an air outlet, wherein the top surface of the base is welded with the bottom surface of the processor, the right side of the air inlet is communicated with the left side of the processor and is connected with the left side of the processor through electric welding, and the left side of the air outlet is communicated with the right side of the processor and is connected with the right side of the processor through electric welding; the treater includes the shell, scrapes and falls handle, heat recovery pipe, purifying plate, the shell is inside with scrape top swing joint, the heat recovery pipe imbeds in the shell inlayer, the purifying plate both ends are connected with the shell inlayer is embedded firmly, the heat recovery pipe is equipped with eight, and eight heat recovery pipes divide into four groups, and a set of two vertical clearances imbed in the shell inlayer uniformly.

Further, the purification board includes fixed block, purification cover, crosses the trachea, the fixed block inlayer is connected with the purification cover upper and lower extreme is inlayed admittedly, cross the trachea and imbed inside the purification cover, it is equipped with threely to cross the trachea, and the trachea clearance is evenly distributed in inside the purification cover in three crossing.

Further, the air passing pipe comprises a pipe wall, a rebound ball, an elastic belt and a cleaning head, the rebound ball is embedded into the inner layer of the pipe wall, the top end of the elastic belt is fixedly connected with the inner layer of the pipe wall, the bottom end of the elastic belt is fixedly connected with the right side of the cleaning head, the rebound ball is of a hollow annular structure made of elastic rubber, and four reinforcing elastic plate structures distributed annularly are arranged inside the rebound ball.

Further, clear away the head and include end block, compression frame, windward board, stretch out the head, the end block left side is inlayed with the compression frame right side and is connected, the compression frame left side with stretch out first right side and inlay and be connected, windward board bottom surface imbeds in stretching out first top surface, the windward board is equipped with two, and two windward board mirror image distribution are in stretching out overhead top and bottom, and the surface is equipped with the coarse semiwater droplet form groove structure of an inner wall.

Furthermore, the extension head comprises a tension block, a friction block, a rolling ball and a shredding piece, the top surface of the tension block is fixedly connected with the bottom surface of the friction block, the outer ring of the rolling ball is in mutual contact with the inner layer of the tension block, the right side of the shredding piece is fixedly connected with the left side of the tension block, and the shredding piece is a fin-shaped piece structure with the surface subjected to sharpening treatment.

Further, scrape and fall including pressure spring, outer ring, pull post, sliding shaft, scrape the head, pressure spring left end and outer ring outer loop welded connection, outer ring inner ring inlays solid the connection through pulling post and sliding shaft outer ring, scrape first top surface and outer ring outer loop and inlay solid the connection, it is equipped with eight to pull the post, and eight pull the even ring form distribution of post interval between outer ring and sliding shaft.

Furthermore, the scraping head comprises a connecting handle, a pressing strip, a clamping head and a scraping plate, the top of the left side of the connecting handle is fixedly connected with the right end of the pressing strip, the right side of the pressing strip is fixedly connected with the top of the right side of the scraping plate, the bottom of the connecting handle is movably clamped with the bottom of the right side of the scraping plate through the clamping head, and the left side surface of the scraping plate is of a smooth arc-shaped structure.

Furthermore, the scraping plate comprises a bearing plate, an outward pushing frame, a cutting head and a scraping block, wherein the inner layer of the bearing plate is fixedly connected with the right side of the outward pushing frame, the left side of the outward pushing frame is fixedly connected with the right side of the cutting head, the top surface of the scraping block is welded with the bottom surface of the bearing plate, and the cutting head is composed of two trapezoid blocks which are superposed together and can retract after the surfaces of the trapezoid blocks are sharpened.

Advantageous effects

Compared with the prior art, the invention has the following beneficial effects:

1. the invention carries out heat recovery of waste gas through a heat recovery pipe in the processor, leads the waste gas to flow through the purification plate, carries out innocent treatment on the waste gas through a chemical coating on the purification cover, can push the cleaning head through the pressure generated by the waste gas in the process of filling the waste gas, leads the cleaning head to move backwards under the action of the thrust generated by the air plate, finally leads the extending head to extend out of the pipe wall through rebound of the rebound ball, slightly expands and vibrates at the same time, cleans and shakes the quicklime layer adhered on the outer layer of the purification cover, can be repeatedly carried out in the process of inputting the waste gas, effectively avoids the quicklime powder from adhering on the purification plate to influence the cleaning effect of other harmful substances in the waste gas, and simultaneously avoids the heating damage of the purification cover caused by the influence of water vapor.

2. When waste gas pours into, scrape and fall also can receive the promotion influence of waste gas, and then slide to the right side along the shell, and the compression pressure spring, after hot gas input, can make the release of pressure spring elasticity, and promote and scrape first quick travel, scrape after the head scrapes the lime layer, the post is dragged in the resistance distortion that produces, and make elasticity release after scraping, the order is scraped the head swing, the lime that makes to be scraped off is difficult to the adhesion and is scraping on the board that falls, reach the end simultaneously after, can cut into the first lime layer that will scrape on the board through inertia and clear away, effectively avoid the quick lime layer to pile up in the shell and damp themogenesis and produce, guarantee equipment's life.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of an industrial waste gas purification treatment device with waste heat recovery and utilization of the present invention.

FIG. 2 is a schematic structural view of a front cross section of the processor of the present invention.

FIG. 3 is a schematic structural view of a front cross section of the purification plate of the present invention.

Fig. 4 is a schematic structural view of a front section of the air passing pipe of the present invention.

Fig. 5 is a schematic structural view of a front cross section of the cleaning head of the present invention.

Fig. 6 is a schematic structural view of a front cross section of the extension head of the present invention.

FIG. 7 is a schematic structural view of a front cross section of the scraping bar of the present invention.

Fig. 8 is a schematic structural view of a front section of the scraping head of the invention.

FIG. 9 is a schematic structural view of a front cross-section of a scrape-off plate of the present invention.

In the figure: base-1, processor-2, air inlet-3, air outlet-4, shell-21, scraping handle-22, heat recovery tube-23, purification plate-24, fixed block-241, purification hood-242, air passing tube-243, tube wall-A1, bounce ball-A2, elastic band-A3, cleaning head-A4, bottom block-A41, compression frame-A42, wind receiving plate-A43, extension head-A44, tension block-B1, friction block-B2, rolling ball-B3, shredding sheet-B4, pressure spring-221, outer ring-222, pull column-223, sliding shaft-224, scraping head-225, connecting handle-C1, pressing strip-C2, clamping head-C3, scraping plate-C4, bearing plate-C41, outer pushing frame-C42, Incision head-C43, scrape block-C44.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The first embodiment is as follows:

referring to fig. 1-6, the embodiments of the present invention are as follows: the industrial waste gas purification treatment equipment with waste heat recycling comprises a base 1, a processor 2, an air inlet 3 and an air outlet 4, wherein the top surface of the base 1 is welded with the bottom surface of the processor 2, the right side of the air inlet 3 is communicated with the left side of the processor 2 and is connected with the left side of the processor by electric welding, and the left side of the air outlet 4 is communicated with the right side of the processor 2 and is connected with the right side of the processor by electric welding; the processor 2 comprises a shell 21, a scraping handle 22, a heat recovery pipe 23 and a purification plate 24, wherein the shell 21 is internally and movably connected with the top of the scraping handle 22, the heat recovery pipe 23 is embedded into the inner layer of the shell 21, two ends of the purification plate 24 are fixedly embedded into the inner layer of the shell 21, the heat recovery pipe 23 is eight, the eight heat recovery pipes 23 are divided into four groups, and a group of two longitudinal gaps are uniformly embedded into the inner layer of the shell 21, so that the heat in the waste gas can be recovered to a greater extent.

Wherein, the purification plate 24 includes fixed block 241, purification cover 242, air pipe 243, the fixed block 241 inlayer is connected with purification cover 242 lower extreme inlay and is linked firmly, air pipe 243 imbeds inside purification cover 242, air pipe 243 is equipped with threely, and three air pipe 243 clearance distributes uniformly inside purification cover 242, is favorable to strengthening the air effect to reinforcing clearance scope.

The air passing pipe 243 comprises a pipe wall A1, a bounce ball A2, an elastic belt A3 and a cleaning head A4, the bounce ball A2 is embedded into an inner layer of the pipe wall A1, the top end of the elastic belt A3 is fixedly embedded into an inner layer of the pipe wall A1, the bottom end of the elastic belt A3 is fixedly embedded into the right side of the cleaning head A4, the bounce ball A2 is of a hollow annular structure made of elastic rubber, and four reinforcing elastic plate structures distributed annularly are arranged inside the bounce ball A2, so that strong bounce force can be generated when the bounce ball is stressed, and the bounce ball can recover quickly to maintain the shape.

Wherein, clear away head A4 includes end block A41, compression frame A42, receives wind board A43, stretches out first A44, end block A41 left side and compression frame A42 right side are inlayed and are connected, compression frame A42 left side is inlayed with the head A44 right side of stretching out and is connected, receive wind board A43 bottom surface and imbed in stretching out first A44 top surface, receive wind board A43 and be equipped with two, two receive wind board A43 mirror image distribution in stretching out first A44 lower surface, and the surface is equipped with the half water droplet form groove structure that an inner wall is coarse, is favorable to increasing the driving force of blast air current.

The extension head A44 comprises a tensioning block B1, a friction block B2, a rolling ball B3 and a shredding piece B4, the top surface of the tensioning block B1 is fixedly connected with the bottom surface of the friction block B2, the outer ring of the rolling ball B3 is in mutual contact with the inner layer of the tensioning block B1, the right side of the shredding piece B4 is fixedly connected with the left side of the tensioning block B1, and the shredding piece B4 is of a fin-shaped piece structure with the surface subjected to sharpening treatment, so that the destruction effect on coagulated quicklime can be enhanced.

Based on the above embodiment, the specific working principle is as follows: the exhaust gas is introduced into the processor 2 from the inlet 3, moves in the housing 21 of the processor 2, recovers heat at the heat recovery pipe 23, then passes through the purification plate 24, is compressed by the pressure of the gas flow during the movement to scrape off the handle 22 to move to the right, contacts the purification hood 242 while passing through the purification plate 24 to detoxify the harmful substances contained in the exhaust gas, then moves to the right through the air passing pipe 243, and finally discharges the treated harmless gas through the exhaust port 4, moves along the pipe wall a1 while the gas enters the air passing pipe 243, and finally impacts on the wind receiving plate a43 of the cleaning head a4 to generate a thrust force to the right and to stretch the elastic belt A3 to generate an elastic force, and impacts the rebound ball a2 when moving to a certain extent, the rebound ball a2 provides a rebound force to rebound the cleaning head a4 to rapidly move to the left, the elastic force released by the elastic belt A3 is matched to enable the elastic belt A3 to rapidly protrude out of the pipe wall A1, the tension block B1 is opened under the limiting action of the friction block B2 and the pipe wall A1, the inner rolling ball B3 can roll at the moment and generate vibration by being impacted everywhere, meanwhile, the pulling fragment B4 can also slide along with the opening action of the tension block B1, if a quicklime layer is accumulated on the outer layer of the purification hood 242 at the moment, the pulling fragment B44 which rapidly protrudes can be jacked open, and the pulling fragment B4 which slides along with the pulling fragment B4 is damaged, the shaking generated by matching is dropped, the influence on the air inlet effect caused by the accumulation of the quicklime layer is avoided, and the influence on the service life of the purification hood 242 caused by the heating of the quicklime layer is avoided.

Example two:

referring to fig. 1-2 and 7-9, the embodiments of the present invention are as follows: the industrial waste gas purification treatment equipment with waste heat recycling comprises a base 1, a processor 2, an air inlet 3 and an air outlet 4, wherein the top surface of the base 1 is welded with the bottom surface of the processor 2, the right side of the air inlet 3 is communicated with the left side of the processor 2 and is connected with the left side of the processor by electric welding, and the left side of the air outlet 4 is communicated with the right side of the processor 2 and is connected with the right side of the processor by electric welding; the processor 2 comprises a shell 21, a scraping handle 22, a heat recovery pipe 23 and a purification plate 24, wherein the shell 21 is internally and movably connected with the top of the scraping handle 22, the heat recovery pipe 23 is embedded into the inner layer of the shell 21, two ends of the purification plate 24 are fixedly embedded into the inner layer of the shell 21, the heat recovery pipe 23 is eight, the eight heat recovery pipes 23 are divided into four groups, and a group of two longitudinal gaps are uniformly embedded into the inner layer of the shell 21, so that the heat in the waste gas can be recovered to a greater extent.

The scraping handle 22 comprises a pressure spring 221, an outer ring 222, a pulling column 223, a sliding shaft 224 and a scraping head 225, the left end of the pressure spring 221 is welded with the outer ring of the outer ring 222, the inner ring of the outer ring 222 is fixedly connected with the outer ring of the sliding shaft 224 through the pulling column 223, the top surface of the scraping head 225 is fixedly connected with the outer ring of the outer ring 222, eight pulling columns 223 are arranged, gaps among the eight pulling columns 223 are uniformly distributed between the outer ring 222 and the sliding shaft 224 in an annular mode, elastic force is generated when reverse pushing is facilitated, the scraping head 225 at the bottom is enabled to swing, and the cleaning effect is enhanced.

Wherein, scrape head 225 including connecting handle C1, layering C2, dop C3, scrape board C4, connecting handle C1 left side top and layering C2 right-hand member are inlayed fixedly and are connected, layering C2 right side and scrape board C4 right side top are inlayed fixedly and are connected, connecting handle C1 bottom is through dop C3 and scrape board C4 right side bottom activity block, scrape board C4 left side surface and be glossy arc structure, the pressure that is favorable to receiving when the breeze blows is bigger.

The scraping plate C4 comprises a bearing plate C41, an outer pushing frame C42, a cut-in head C43 and a scraping block C44, the inner layer of the bearing plate C41 is fixedly connected with the right side of an outer pushing frame C42, the left side of the outer pushing frame C42 is fixedly connected with the right side of the cut-in head C43, the top surface of the scraping block C44 is connected with the bottom surface of the bearing plate C41 in a welding mode, the cut-in head C43 is composed of two trapezoid blocks, the surfaces of the trapezoid blocks are sharpened, the trapezoid blocks are overlapped together and can retract inwards, the lime layer accumulated on the surface of the bearing plate C41 can be embedded quickly after clearing is finished, and the left side of the trapezoid blocks is expanded to clear.

Based on the above embodiment, the specific working principle is as follows: after the airflow is poured into the processor 2 through the air inlet, the scraping handle 22 in the processor 2 is affected by the airflow, the airflow impacts on the scraping plate C4 of the scraping head 225, because the left side of the scraping plate C4 is of a smooth-surfaced arc-shaped structure, the thrust is increased, the sliding shaft 224 is further made to slide rightwards along the housing 21, the outer ring 222 compresses the compression spring 221 to generate an elastic force, after the airflow input is finished, the elastic force generated by the compression spring 221 is rapidly released, the outer ring 222 is pushed leftwards, and further the scraping head 225 is driven to rapidly move leftwards, if the airflow passes through a path and is blocked by lime, the compression strip C2 of the scraping head 225 is compressed to generate an elastic force, the connecting handle C1 is made to slightly rotate the outer ring 222, the pulling column 223 generates a tensile elastic force, after the lime is scraped, the blocking force disappears, the elastic force is released, the outer ring 222 is made to be muddy, and the scraping plate C4 is made to be thrown leftwards, the lime scraped and adhered to the surface is thrown off, and after the lime is thrown to the limit, the cut-in head C43 is enabled to extend outwards through inertia and is pulled back again under the action of the outward pushing frame C42, lime adhered to the surface of the bearing plate C41 can be loosened by embedding and pulling back the extended cut-in head C43, and finally the adhered matter is shaken off in the throwing process, so that the lime layer is removed from the inner wall of the shell 21, and the lime is effectively prevented from being accumulated and generating heat in the inner layer of the shell 21.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.