CN213890933U - Foaming positioning tool for water heater - Google Patents

Abstract

The utility model provides a foaming location frock for water heater. The foaming positioning tool for the water heater comprises a movable sleeve, a fixed assembly and an operation assembly, wherein the movable sleeve is provided with a first end and a second end which are arranged oppositely, the first end is open, at least the second end of the movable sleeve is provided with a contracted outer diameter along the direction from the first end to the second end, the fixed assembly comprises an elastic piece, the elastic piece is provided with an opening facing the second end, the aperture of the opening is smaller than the outer diameter of the first end, the operation assembly movably penetrates through the fixed assembly to be connected to the movable sleeve, the operation assembly drives the movable sleeve to move between a release position and a clamping position, and when the movable sleeve is located at the release position, the second end is inserted to the first depth of the opening; and when the movable sleeve is in the clamping position, the second end is inserted into the opening to a second depth which is larger than the first depth, so that the edge of the elastic element expands outwards in the radial direction. The operation time of the foaming positioning tool is greatly shortened, and the capacity of the water heater is greatly improved.

Description

Foaming positioning tool for water heater

Technical Field

The utility model relates to a tooling equipment, more specifically relate to a foaming location frock for water heater.

Background

The foaming layer of the water heater can effectively prevent the temperature of hot water in the inner container from being reduced, and the water heater is ensured to have a good heat preservation effect. Therefore, the heat loss in the inner container of the water heater is avoided, and the energy consumption of the water heater is increased.

The foaming layer is formed by injecting a foaming agent into a space between the inner container and the outer shell of the water heater. In order to prevent the foaming agent from extruding in the foaming and curing process, the inner container is displaced relative to the shell and is not concentric, and bubbles leak from a water passing port (a water inlet and a water outlet) of the shell, a foaming positioning tool is arranged at the water passing port before the foaming agent is injected. The foaming positioning tool penetrates through a water passing port of the shell and is connected onto the water passing surface of the inner container through threads, so that the position of the inner container in the shell can be fixed. In addition, the foaming positioning tool can also substantially block a water passing port on the shell, so that bubble leakage at the water passing port of the shell can be avoided.

Adopt the foaming location frock of above-mentioned structure to have following problem: firstly, the time consumed for connecting the foaming positioning tool with the water passing hole through threads is long, the installation beat of a single tool is about 10 seconds, and the total installation beat of two tools installed at the water inlet and the water outlet is about 20 seconds, so that the production efficiency of a water heater is seriously tired for the production of the water heater with the average post beat of 12 seconds; secondly, after long-term the use, the screw thread of foaming location frock can wear and tear seriously, leads to connecting and dismantlement location frock to become unusual difficulty (can unable the installation even), and the staff of this process is tired unusually, and personnel's loss rate is higher.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of the above problems. The utility model provides a foaming location frock for water heater. The foaming positioning tool for the water heater comprises a movable sleeve, a fixed assembly and an operation assembly, wherein the movable sleeve is provided with a first end and a second end which are arranged oppositely, the first end is open, at least the second end of the movable sleeve is provided with a contracted outer diameter along the direction from the first end to the second end, the fixed assembly comprises an elastic piece, the elastic piece is provided with an opening facing the second end, the aperture of the opening is smaller than the outer diameter of the first end, the operation assembly movably penetrates through the fixed assembly to be connected to the movable sleeve, the operation assembly drives the movable sleeve to move between a release position and a clamping position, and when the movable sleeve is located at the release position, the second end is inserted to the first depth of the opening; and when the movable sleeve is in the clamping position, the second end is inserted into the opening to a second depth which is larger than the first depth, so that the edge of the elastic element expands outwards in the radial direction.

Adopt the utility model discloses a foaming location frock, on satisfying its necessary location and sealed function's basis, the staff only need make portable sleeve remove between block position and release position through operating assembly (for example outside pulling and inside promotion), can realize the installation and the dismantlement of foaming location frock correspondingly. Practice shows that the installation beat and the dismantlement beat of single foaming location frock can both be less than 6 seconds, compare and shorten by a wide margin when current threaded connection's operation is used to can satisfy the production beat of water heater completely, the productivity promotes by a wide margin. Moreover, the labor intensity for installing and disassembling the foaming positioning tool is obviously reduced, so that the loss rate of the post personnel is obviously reduced. In addition, compare in threaded connection, the connected mode that cup joints is after long-term use, and the movable sleeve also can not produce great wearing and tearing, and the stability of this process is better, and the life of foaming location frock obviously prolongs.

Illustratively, the fixing assembly further comprises a retainer which covers the elastic element, the edge of the elastic element extends out of the retainer, and when the movable sleeve is in the clamping position, the edge of the elastic element expands outwards in the radial direction to form an annular clamping groove between the retainer and the edge of the elastic element. After installation, the edge of the shell water passing opening can be inserted into the annular clamping groove, namely the retainer abuts against the shell on the outer side, and the expanded edge of the elastic piece abuts against the shell on the inner side, so that the foaming positioning tool can be firmly held on the shell.

Illustratively, the holder has a barrel shape with an opening through which the operating assembly protrudes from the bottom of the barrel. Therefore, the retainer can wrap a part of the components of the foaming positioning tool, so that the foaming positioning tool is simple in appearance. Moreover, when the worker supports the barrel-shaped retainer against the shell, the holding hand feeling is good, and the work is comfortable.

Illustratively, the resilient member is also barrel-shaped, and the resilient member is secured to the cage by an interference fit. In this way, the elastic member can be easily attached and detached by its own elasticity. In addition, when the foaming positioning tool is assembled, the elastic piece can be installed in place by inserting the elastic piece into the holder to the bottom, so that the consistency of the production process is kept. Therefore, the processing cost of the foaming positioning tool is reduced.

Illustratively, the resilient member is removably coupled to the holder. The elastic piece can be adhered with foaming agent after long-term use, the elasticity is reduced, the elastic piece is damaged or the elastic piece is aged, and the elastic piece is detachably connected to the retainer, so that the use cost of the foaming positioning tool can be reduced.

Illustratively, the operating assembly comprises a connecting piece and a limiting piece, wherein the inner end part of the connecting piece is connected to the movable sleeve, the outer end part of the connecting piece penetrates through the opening of the elastic piece to extend out of the fixed assembly, and the limiting piece is connected to the connecting piece at least when the movable sleeve is in the clamping position so as to maintain the current position of the connecting piece. Through the arrangement, the connecting piece can be positioned at the clamping position in the foaming process, so that the connecting piece is prevented from moving, and the phenomenon of bubble leakage is caused.

The operating assembly further comprises an operating handle, the limiting member is a cam, the cam is arranged at the end of the operating handle, the cam is rotatably connected to the outer end portion of the connecting member by taking the axis of the cam as a shaft, and when the convex portion of the cam abuts against the outer surface of the fixed assembly, the movable sleeve is in the clamping position. Therefore, the operating handle and the cam can play a role similar to a lever, the foaming positioning tool is labor-saving to install and disassemble by workers, and the working strength is further reduced.

Illustratively, the operating assembly is detachably connected to the movable sleeve. In this way, replacement may be facilitated once the securing assembly is damaged.

Illustratively, at least half of the second end of the moveable sleeve is inserted into the aperture along an axial direction of the moveable sleeve when the moveable sleeve is in the engaged position. This ensures that the resilient member has sufficient deformation and the sealing and retaining action is more pronounced.

Exemplarily, be provided with spacing portion in the first end of movable sleeve, spacing portion is used for leaning on the terminal surface of the mouth of a river is crossed to the inner bag of water heater. Therefore, in the installation process, the assembly can be completed by only pushing the movable sleeve to the bottom on the inner container water passing port and operating the operation assembly, and therefore the operation difficulty is further reduced. Moreover, as mentioned above, the movable sleeve is sleeved on the inner container water passing port, so that the inner container can be positioned in a plane perpendicular to the axial direction of the inner container water passing port. And along the axial direction of the inner container water passing opening, the positioning can be carried out through the limiting part.

Exemplarily, the foaming positioning tool for the water heater further comprises a resetting piece, and the resetting piece is clamped between the movable sleeve and the fixed component. Through this kind of setting, after foaming is accomplished, release the operation subassembly, the piece that resets can promote portable sleeve to the release position, therefore the staff need not to operate the operation subassembly again and promotes portable sleeve, and working strength obtains further reduction from this.

Illustratively, the reset piece is sleeved on the operation assembly. Therefore, the structural size of the foaming positioning tool can be reduced, and the foaming positioning tool is convenient to store and manage.

Illustratively, a gasket is arranged in the fixing assembly, and the resetting piece is abutted against the gasket. Through setting up the gasket, can reduce the pressure that acts on the elastic component when restoring to the throne the piece compressed, prevent that the elastic component structure from warping.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail embodiments of the present invention with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention. In the drawings, like reference numbers generally represent like parts or steps.

Fig. 1 is a perspective view of a foaming positioning tool according to an exemplary embodiment of the present invention;

FIG. 2 is a front view of the foaming positioning tool shown in FIG. 1;

FIG. 3 is a top view of the foaming positioning tool shown in FIG. 1;

fig. 4 is a cross-sectional view of a foaming positioning tool after installation in accordance with an exemplary embodiment of the present invention; and

fig. 5 is a cross-sectional view of a foaming positioning tool after installation according to another exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

100. a foaming positioning tool; 200. a movable sleeve; 210. a first end; 212. a limiting part; 220. a second end; 230. an outer side surface; 300. a holder; 310. an opening; 400. an elastic member; 410. opening a hole; 500. An operating component; 510. a connecting member; 520. a cam; 530. an operating handle; 540. a pin; 600. a reset member; 700. a gasket; 910. an inner container; 920. a water gap is arranged in the inner container; 930. a housing; 940. and a shell water passing opening.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the present invention and are not intended to limit the invention to the particular embodiments described herein. Based on the embodiments of the present invention described in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

In order to solve the problem, the utility model provides a foaming location frock for water heater. The positioning tool is suitable for any suitable water heater, such as a gas water heater, a solar water heater, an electric water heater and the like. As shown in fig. 1-5, the foaming positioning tool 100 may include a movable sleeve 200, a fixed assembly and an operating assembly 500. In order to understand the structure of the foaming positioning tool 100 as a whole, first, a brief description will be given of the case where the foaming positioning tool 100 is mounted on a water heater. As shown in fig. 4 or 5, the foaming positioning tool 100 is connected to the inner container water inlet 920 on the inner container 910 through the outer container water inlet 940 on the outer container 930 of the water heater.

With continued reference to fig. 5, the moveable sleeve 200 has a first end 210 and a second end 220. The first end 210 and the second end 220 may be oppositely disposed along an axial direction of the movable sleeve 200. The first end 210 is open, and the first end 210 can be used to fit over the inner bladder drain 920 of the water heater. Illustratively, the inner diameter of the first end 210 may be equal to or slightly larger than the outer diameter of the inner bladder drainage port 920. Therefore, when the movable sleeve 200 is sleeved on the liner water drainage port 920, foaming agents can be prevented from entering the liner water drainage port 920 from a gap between the movable sleeve 200 and the liner water drainage port 920, and the outer surface of the liner water drainage port 920 can be kept clean. The outer diameter of the first end 210 may be equal to or less than the inner diameter of the housing excess water gap 940 so that the movable sleeve 200 may be inserted between the housing 930 and the liner 910 through the housing excess water gap 940. The liner weir 920 may include a water inlet and a water outlet. That is, before foaming, the foaming positioning tool 100 is respectively installed at the water inlet and the water outlet of the water heater. At least the second end 220 of the moveable sleeve 200 has a converging outer diameter in a direction from the first end 210 to the second end 220. That is, the moveable sleeve 200 may contract in outer diameter from the first end 210 to the second end 220, and the moveable sleeve 200 may be generally conical in shape as a whole; the moveable sleeve 200 may contract in outer diameter from a middle portion of the first end 210 and the second end 220 to the second end 220, and the moveable sleeve 200 may be generally frustoconical in shape as a whole. As shown, the tapered outer diameter of the second end 220 may be achieved by an outer side 230. Correspondingly, the outer side surface 230 may be a side surface of a circular truncated cone or a side surface of a cone. In addition, the second end 220 may be closed as shown or may be open. The fixing assembly may include an elastic member 400. The resilient member 400 may have an aperture 410 facing the second end 220. The aperture of the opening 410 is smaller than the outer diameter of the first end 210. The outer diameter of the edge of the resilient member 400, which forms the opening of the opening 410, may be equal to or slightly smaller than the inner diameter of the housing excess water gap 940, so that the edge of the resilient member 400 may extend through the housing excess water gap 940 into the housing 930 and expand radially outward upon slight application of an external force to seal the housing excess water gap 940. Which will be described in detail later.

The operating assembly 500 may be operated by a worker. The operating member 500 is movably connected to the movable sleeve 200 through the fixed member. Illustratively, one end of the operating assembly 500 may be connected to the movable sleeve 200. The other end of the operating member 500 may extend through the opening 410 to the outside of the elastic member 400. Of course, the operating assembly 500 may extend to the outside from other positions as long as it can be operated by a worker. Preferably, the operating assembly 500 may be removably connected to the moveable sleeve 200 by any suitable means. In this way, replacement may be facilitated once the securing assembly is damaged.

The operating assembly 500 can move the movable sleeve 200 between the release position and the engagement position. When the moveable sleeve 200 is in the release position, the second end 220 may be inserted to a first depth of the bore 410. The first depth may be zero or greater than zero. The operating assembly 500 may be in a free state at this time. The edges of the resilient member 400 may be in a natural state or in a state of being slightly compressed. When the moveable sleeve 200 is in the engaged position, the second end 220 may be inserted into the bore 410 to a second depth greater than the first depth to expand the portion of the resilient member 400 at the bore 410 radially outward. The elastic member 400 is clamped between the outer side 230 and the outer casing 930, so that the foaming agent does not enter the inner container water gap 920 from the second end 220. The operating assembly 500 itself may have any suitable stop to hold it in the engaged position. Of course, the operating assembly 500 may be held in the engaged position by any suitable external device.

In order to better understand the above-mentioned foaming positioning tool 100, the working process of the foaming positioning tool 100 according to an embodiment of the present invention will be described below with reference to fig. 5. As mentioned above, before foaming, the worker can pass the movable sleeve 200 through the outer shell water gap 940 of the water heater and sleeve the first end 210 of the movable sleeve 200 on the inner container water gap 920 of the water heater. At this time, the worker may operate (e.g., pull outward) the end of the operation member 500 exposed from the fixed member, so that the second end 220 of the movable sleeve 200 moves into the opening 410 of the elastic member 400. During the pulling process, the depth of insertion of the second end 220 into the opening 410 gradually changes from the first depth to the second depth. At the same time, the edges of the elastic member 400 are turned outward by the openings 410 and the inclined outer side 230. When the depth of insertion of the second end 220 into the opening 410 changes to a second depth, the edges of the elastic member 400 are everted against the inner side of the housing 930. Thus, the edge of the elastic member 400 may be caught by the edge of the housing drain 940 by virtue of the elastic property of the elastic member 400. The worker may then release the operating assembly 500.

Thus, after the foaming agent is injected into the space between the inner container 910 and the outer container 930, the elastic member 400 and the movable sleeve 200 completely block the outer container nozzle 940, and the elastic member 400 is compressed between the outer container nozzle 940 and the movable sleeve 200 to perform a good sealing function, so that the foaming agent cannot leak from the outer container nozzle 940. Further, referring to fig. 5, the movable sleeve 200 can position the inner container 910 in a plane perpendicular to the axial direction of the inner container drain 920, thereby preventing the inner container 910 from being eccentric from the outer case 930. In the foaming process, the foaming positioning tool 100 is arranged on the water inlet and the water outlet of the water heater, in addition, the existing water heater also has other connecting structures to keep the position of the inner container 910 relative to the outer shell 930, and the concentricity of the inner container 910 and the outer shell 930 can be well kept through the combined action of the inner container 910 and the outer shell 930. In practice, the foaming positioning tool 100 can completely meet the requirements of sealing and positioning. After the foaming and curing are completed, the worker operates the operation member 500 to operate the end exposed from the fixed member, and pushes the movable sleeve 200 inward to make the outer side 230 of the second end 220 of the movable sleeve gradually insert into the opening 410 from the second depth to the first depth. When the depth of insertion of the outer side 230 of the second end 220 into the opening 410 becomes a first depth, the edge of the elastic member 400 is restored to a natural state or a state of being slightly compressed. At this time, the worker can take out the movable sleeve 200, and the foaming process is completed. The technique of water heater foaming is known to those skilled in the art and is not set forth herein in any greater detail for the sake of brevity.

From the above, adopt the utility model discloses a foaming location frock 100, on satisfying its necessary location and sealed function's basis, the staff only need make movable sleeve 200 move between block position and release position through operating assembly 500 (for example outwards pulling and inwards promoting), can realize the installation and the dismantlement of foaming location frock 100 correspondingly. Practice shows that the installation beat and the disassembly beat of a single foaming positioning tool 100 can be less than 6 seconds, and the operation time of the single foaming positioning tool is greatly shortened compared with that of the existing threaded connection, so that the production beat of a water heater can be completely met, and the productivity is greatly improved. Moreover, the labor intensity for installing and disassembling the foaming positioning tool 100 is obviously reduced, so that the loss rate of the post personnel is obviously reduced. In addition, compare in threaded connection, the connected mode that cup joints is after long-term the use, and movable sleeve 200 also can not produce great wearing and tearing, and the stability of this process is better, and the life of foaming location frock 100 obviously prolongs.

It should be noted that, in order to enable the deformed elastic member 400 to be firmly clamped on the housing water gap 940, it is preferable that the large size of the outer diameter of the second end 220 of the movable sleeve 200 abuts against the everted edge of the elastic member 400 when the movable sleeve 200 is in the engaged position. That is, when the moveable sleeve 200 is in the engaged position, at least half of the second end 220 of the moveable sleeve 200 is inserted into the opening 410 along the axial direction of the moveable sleeve 200. This ensures that the resilient member 400 has sufficient deformation and the sealing and retaining action is more pronounced. Preferably, the outer diameter of the first end 210 may be slightly smaller than the bore diameter of the housing sprue 940, i.e., as long as the movable sleeve 200 is ensured to be able to pass through the housing sprue 940. Thus, when the movable sleeve 200 is pulled outward to be in the engaged position, the gap between the housing drain port 940 and the movable sleeve 200 may be small, and thus the everted edge of the elastic member 400 may be well maintained between the housing drain port 940 and the movable sleeve 200 to perform the sealing and retaining functions. Of course, it is also possible to appropriately reduce the maximum outer diameter of the second end 220, and appropriately increase the thickness of the edge of the elastic member 400, or decrease the elasticity of the elastic member 400, to maintain the everted shape of the elastic member 400. The portion exposed outside the housing 930 may be made sufficiently rigid by increasing the thickness of the elastic member 400, thereby helping the elastic member 400 and the operating assembly 500 to be maintained at a desired position.

Thus, the outer diameter and the parameters of the above components can be selected by those skilled in the art as required, as long as the clamping and sealing function of the everted edge of the elastic member 400 is forced when the movable sleeve 200 is in the engaged position.

Preferably, the fixing assembly may further include a holder 300, as shown in fig. 1-4. The holder 300 may cover the elastic member 400. The holder 300 may cover the elastic member 400 through various structures. The edge of the elastic member 400 protrudes out of the holder 300. After the foaming positioning tool 100 is installed, the holder 300 may be held outside the housing 930. When the movable sleeve 200 is in the engaged position, the edges of the resilient member 400 expand radially outward to form an annular groove between the retainer 300 and the edges of the resilient member 400. As shown in fig. 4, the outer diameter of the holder 300 may be larger than the bore diameter of the housing drain 940 on the housing 930. In this way, the edge of the housing water gap 940 can be inserted into the ring groove, that is, the retainer 300 abuts against the housing 930 on the outer side, and the expanded edge of the elastic member 400 abuts against the housing 930 on the inner side, so that the foaming positioning tool 100 can be firmly held on the housing 930.

Preferably, as shown in fig. 4, the holder 300 has a barrel shape having an opening 310. The opening 310 may be a recess provided in the holder 300, or may be a through hole provided in the holder 300, as long as it can cover the elastic member 400. The handle assembly 500 may protrude from the bottom of the tub through the opening 310. In this way, the retainer 300 can wrap the part of the elastic element 400 exposed outside the housing 930, thereby ensuring a simple appearance of the foaming positioning tool 100. When the foaming positioning tool is installed, a worker can hold the barrel-shaped retainer 300 to enable the barrel-shaped retainer to abut against the shell 930, the holding hand feeling is good, and the work is comfortable. Based on this, the elastic member 400 may also have a barrel shape, and the elastic member 400 may be fixed to the holder 300 by interference fit. In this way, the elastic member 400 can be easily mounted and dismounted by its own elasticity. In addition, when the foaming positioning tool 100 is assembled, the elastic member 400 can be installed in place by being inserted into the holder 300 to the bottom, thereby maintaining the consistency of the production process. Therefore, the processing cost of the foaming positioning tool 100 is reduced.

Preferably, the elastic member 400 is detachably coupled to the holder 300. After long-term use, the elastic member 400 may stick foaming agent, have reduced elasticity, be damaged, or be aged, and the detachable connection of the elastic member 400 to the holder 300 may reduce the use cost of the foaming positioning tool 100.

The working flow of the foaming positioning tool 100 according to an embodiment of the present invention will be described with reference to fig. 4. As mentioned above, before foaming, the worker may press the holder 300 against the outer casing 930 from the outside and maintain the position of the holder 300 relative to the outer casing 930, and then operate (e.g., pull) the end of the operation assembly 500 exposed out of the holder 300, so that the second end 220 of the movable sleeve 200 moves into the opening 410 of the elastic member 400. When the depth of the second end 220 inserted into the opening 410 is changed to a second depth, an annular catching groove is formed between the edge of the opening 310 of the holder 300 and the edge of the elastic member 400. The ring clamp groove can clamp the outer shell 930 of the water heater. Specifically, the ring-shaped clamping groove can clamp the edge of the outer casing water gap 940. The cage 300 may be released at this time. After the foaming and curing are completed, the worker pushes the retainer 300 against the housing 930, and pushes the movable sleeve 200 inward to make the outer side 230 of the second end 220 of the movable sleeve gradually insert into the opening 410 from the second depth to the first depth. Therefore, by arranging the retainer 300, the sealing of the housing water gap 940 by the elastic member 400 is easier to realize, and the design difficulty of the foaming positioning tool 100 is reduced.

Preferably, a stop portion 212 is provided within the first end 210 of the moveable sleeve 200. The limiting part 212 is used for abutting against the end surface of the inner container water passing opening 920 of the water heater. Illustratively, as shown in fig. 4 or 5, the first end 210 of the movable sleeve 200 may be in the shape of a cap that is snap-fitted over the inner bladder drainage port 920. The stopper 212 is an end surface inside the first end 210. Alternatively, in other embodiments not shown, the first end 210 may only partially have the limiting portion 212 therein, as long as the limiting portion can abut against the end surface of the inner container water drainage port 920 during the installation process. In this way, during the installation process, the assembly can be completed by pushing the movable sleeve 200 to the bottom on the liner water passing port 920 and then operating the operation assembly 500, thereby further reducing the operation difficulty. Moreover, as described above, the movable sleeve 200 can position the inner container 910 in a plane perpendicular to the axial direction of the inner container water gap 920 by being sleeved on the inner container water gap 920. And along the axial direction of the inner container water passing opening 920, the positioning can be carried out through the limiting part 212. Although a certain gap is formed between the limiting portion 212 and the end surface of the inner container water drainage opening 920 due to the outward movement when the movable sleeve 200 is in the engagement position, on the one hand, a person skilled in the art can set the stroke of pulling the movable sleeve 200 outward according to the disclosure of the present application to be small, so that the gap is also small, and thus, even if the inner container 910 deviates from the outer shell 930 by a certain gap, the gap can be tolerated; on the other hand, when the limiting parts 212 of the two foaming positioning tools 100 are matched with each other and the connection structure between the inner container 910 and the outer shell 930 is combined, the concentricity of the inner container 910 and the outer shell 930 can be well maintained.

Preferably, as shown in fig. 1-4, the operating assembly 500 may include a connecting member 510 and a limiting member. The inner end of the connector 510 may be connected to the movable sleeve 200. Alternatively, the inner end of the connector 510 may be non-detachably connected to the movable sleeve 200 by welding, bonding, or the like, or the connector 510 and the movable sleeve 200 may be integrally formed. Preferably, the inner end of the connector 510 is detachably connected to the movable sleeve 200. In the embodiment shown in the drawings, the connector 510 is provided with threads, the movable sleeve 200 is provided with a threaded hole, and the inner end of the connector 510 is threadedly coupled to the movable sleeve 200. In other embodiments not shown in the figures, the inner end of the connector 510 may also be connected to the movable sleeve 200 by means of pins, snaps or the like. The inner end of the connecting member 510 is detachably connected to the movable sleeve 200, so that the assembly of the foaming positioning tool 100, in particular, the assembly and replacement of the elastic member 400, the restoring member 600 and the spacer 700, which will be described later, can be facilitated. In addition, after long-term use, the foaming agent is adhered to the movable sleeve 200, and in the case where the maximum outer diameter of the movable sleeve 200 is substantially equal to the bore diameter of the outer-casing water passage opening 940 as described above, the foaming agent is adhered to the movable sleeve 200, so that the movable sleeve 200 is not easily taken out, or the movable sleeve 200 is not easily fitted over the inner-casing water passage opening 920, and therefore, the movable sleeve 200 needs to be periodically replaced. By detachably connecting the connector 510 to the movable sleeve 200, the use cost of the foaming positioning tool 100 can be reduced. Of course, it will be appreciated by those skilled in the art that in embodiments where operative assembly 500 has other configurations, removable sleeve 200 may be removably coupled thereto to achieve the same technical result.

The outer end of the connector 510 may extend through the opening 410 and out of the mounting assembly. The stopper is connected to the connector 510 at least when the movable sleeve 200 is in the engagement position to maintain the current position of the connector 510. For example, the outer end of the connecting member 510 may be provided with a mounting hole, and a limiting member includes, but is not limited to, a threaded connector, a pin, etc. and is mounted in the mounting hole to maintain the connecting member 510 in the engaging position. Through the arrangement, the connecting piece 510 can be positioned at the clamping position in the foaming process, so that the movement of the connecting piece is prevented, and the phenomenon of bubble leakage is caused.

Further, as shown in fig. 1-4, the operating assembly 500 may further include an operating handle 530. The limiting member may be a cam 520. The cam 520 may be provided at an end of the operating handle 530. Preferably, the cam 520 may be integral with the operating handle 530, which facilitates manufacturing. The cam 520 may be rotatably coupled to an outer end portion of the link 510 with its axis as a shaft. In the embodiment shown in the figures, the cam 520 is connected to the link 510 by a pin 540. When the lobe of the cam 520 abuts the outer surface of the stationary assembly, the moveable sleeve 200 is in the engaged position.

With this arrangement, before foaming, the worker can pull the operating handle 530 so that the cam 520 can be rotated about its axis with respect to the outer end portion of the connecting member 510. When the lobe of the cam 520 abuts the outer surface of the stationary component, the moveable sleeve 200 moves toward the aperture 410 into the engaged position. After foaming is complete, the operator can pull the operating handle 530 to its initial position, and the protrusion of the cam 520 moves away from the outer surface of the fixed component, pushing the connecting member 510 inward, moving the movable sleeve 200 to the release position. Therefore, the operating handle 530 and the cam 520 can act like a lever, so that the labor is saved for workers to install and disassemble the foaming positioning tool 100, and the working strength is further reduced.

Preferably, as shown in fig. 4, the foaming positioning tool 100 may further include a reset member 600. Preferably, the restoring member 600 may be a spring. The reset member 600 may be sandwiched between the movable sleeve 200 and the stationary assembly. With this arrangement, when the foaming is completed, the operation assembly 500 is released, and the reset member 600 pushes the movable sleeve 200 to the release position, so that the worker does not need to operate the operation assembly 500 to push the movable sleeve 200, thereby further reducing the working strength.

Further, as shown in fig. 4, the restoring member 600 may be sleeved on the operating assembly 500. Therefore, the structural size of the foaming positioning tool 100 can be reduced, and the foaming positioning tool is convenient to store and manage.

Optionally, as shown in fig. 4, a spacer 700 may be disposed within the securing assembly. The reset member 600 may rest on the spacer 700. By providing the spacer 700, the pressure applied to the elastic member 400 when the restoring member 600 is compressed can be reduced, and the elastic member 400 can be prevented from being structurally deformed.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (13)

1. A foaming positioning tool for a water heater is characterized by comprising a movable sleeve, a fixed assembly and an operating assembly, said moveable sleeve having oppositely disposed first and second ends, said first end being open, at least said second end of said moveable sleeve having a converging outer diameter in a direction from said first end to said second end, the securing assembly includes a resilient member having an opening facing the second end, the opening having a bore diameter smaller than an outer diameter of the first end, the operating component is movably connected to the movable sleeve through the fixed component and drives the movable sleeve to move between a releasing position and a clamping position, wherein the second end is inserted to a first depth of the aperture when the moveable sleeve is in the release position; and when the movable sleeve is in the clamping position, the second end is inserted into the open hole to a second depth which is larger than the first depth, so that the edge of the elastic element expands outwards in the radial direction.

2. The foaming positioning tool for the water heater according to claim 1, wherein the fixing assembly further comprises a retainer covering the elastic member, an edge of the elastic member extends out of the retainer, and when the movable sleeve is in the engagement position, the edge of the elastic member expands radially outward to form an annular clamping groove between the retainer and the edge of the elastic member.

3. The foaming positioning tool for the water heater as claimed in claim 2, wherein the retainer is in a barrel shape with an opening, and the operating assembly protrudes from the bottom of the barrel through the opening.

4. The foaming positioning tool for the water heater of claim 3, wherein the elastic member is also barrel-shaped and is fixed to the retainer through interference fit.

5. The foaming positioning tool for the water heater according to claim 2, wherein the elastic member is detachably connected to the holder.

6. The foaming positioning tool for a water heater according to claim 1, wherein the operating assembly comprises a connecting member and a limiting member, an inner end portion of the connecting member is connected to the movable sleeve, an outer end portion of the connecting member passes through the opening of the elastic member and extends out of the fixing assembly, and the limiting member is connected to the connecting member at least when the movable sleeve is in the engagement position so as to maintain a current position of the connecting member.

7. The foaming positioning tool for the water heater of claim 6, wherein the operating assembly further comprises an operating handle, the limiting member is a cam, the cam is arranged at an end of the operating handle, the cam is rotatably connected to an outer end of the connecting member by taking an axis of the cam as an axis, and the movable sleeve is in the clamping position when a convex part of the cam abuts against an outer surface of the fixed assembly.

8. The foaming positioning fixture for a water heater of claim 1, wherein the operating assembly is removably connected to the movable sleeve.

9. The foaming positioning tool for the water heater of claim 1, wherein at least half of the second end of the movable sleeve is inserted into the opening along an axial direction of the movable sleeve when the movable sleeve is in the engaged position.

10. The foaming positioning tool for the water heater according to claim 1, wherein a limiting portion is arranged in the first end of the movable sleeve, and the limiting portion is used for abutting against an end face of a water passing port of a liner of the water heater.

11. The foaming positioning tool for the water heater of claim 1, further comprising a reset piece clamped between the movable sleeve and the fixed component.

12. The foaming positioning tool for the water heater according to claim 11, wherein the reset member is sleeved on the operation assembly.

13. The foaming positioning tool for the water heater of claim 11, wherein a gasket is arranged in the fixing assembly, and the resetting piece abuts against the gasket.

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