Limiting device of flue air exchanger

Abstract

The utility model relates to the technical field of flue air exchange equipment, provides a limiting device of a flue air exchanger, and solves the technical problems that an existing limiting device is complex in structure and poor in reliability. The flue air exchanger achieves opening and closing switching of the first flue and the second flue through a baffle sliding up and down along the guide rails. The limiting device comprises a pin, a fixed block, a sliding block and a guide column, the pin is arranged on the portion, abutting against the guide rail, of the baffle and can elastically retract into the baffle or elastically extend out of the baffle, a limiting groove is formed in the guide rail, and the fixed block, the sliding block and the guide column are all arranged in the limiting groove. The guide column is fixedly connected with the guide rail and extends in the moving direction of the baffle, the fixed block is fixed to the guide column, the sliding block is slidably installed on the guide column, a first supporting face is arranged on the upper side of the fixed block, and a second guide inclined face and a third guide inclined face are arranged on the lower side and the upper side of the sliding block respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of flue air exchange equipment, in particular to a limiting device for a flue air exchanger. Background Art

[0002] The air exchanger plays a vital role in the flue inside the kiln. It can adjust the flow direction of the flue according to the reaction process of the reactants, ensure the balance of air exchange during the reaction of the reactants, and avoid incomplete reaction of the reactants in the kiln body and defects.

[0003] The air exchanger developed by the applicant includes a first flue and a second flue arranged on both sides of the kiln body, the first flue and the second flue guide the flow direction of the generated flue gas, and baffles arranged on the first flue and the second flue, and the flue gas flow direction exchange is achieved by switching the baffles on the first flue and the second flue. After the baffle is opened, the baffle is generally driven forward by a cylinder to support the baffle to achieve baffle limit, but the movement of the piston rod of the cylinder requires gas drive and electrical signal control, which not only increases the complexity of the system, but also fails after power failure, and the reliability is slightly poor.

[0004] To this end, we propose a limiting device for a flue air exchanger. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model provides a limit device for a flue air exchanger, which solves the technical problems of the existing limit device having a complex structure and poor reliability.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A limiting device for a flue air exchanger, the flue air exchanger comprises a first flue and a second flue arranged on both sides of a kiln body, baffles arranged at the first flue and the second flue, the baffles slide up and down along a guide rail under the action of a driving unit to realize the opening and closing switching of the first flue and the second flue; characterized in that:

[0010] The limiting device includes a pin, a fixed block, a sliding block and a guide post. The pin is arranged at the position where the baffle plate conflicts with the guide rail. The pin can elastically shrink inside the baffle plate or elastically extend to the outside of the baffle plate. A limiting groove is installed on the guide rail. The fixed block, the sliding block and the guide post are all arranged in the limiting groove. The guide post is fixedly connected to the guide rail and extends along the moving direction of the baffle plate. The fixed block is fixed on the guide post, and the sliding block is slidably installed on the guide post. The upper side of the fixed block is provided with a first supporting surface, and the lower side and upper side of the sliding block are respectively provided with a second guide inclined surface and a third guide inclined surface.

[0011] Furthermore, the upper end of the sliding block is elastically connected to the upper side wall of the limiting groove through a first spring, so that the sliding block is spaced apart from the fixed block.

[0012] Furthermore, the baffle is provided with a through hole at the pin installation position, a guide sleeve is installed in the through hole, a plug, a second spring and a pin are installed in the guide sleeve, the plug is threadedly connected to the guide sleeve, the two ends of the second spring are respectively against the plug and the pin, and the pin and the guide sleeve are limited by a concave-convex structure.

[0013] Furthermore, a roller is installed at the end of the pin.

[0014] Furthermore, the first supporting surface includes an arc-shaped groove that fits with the roller.

[0015] Furthermore, the first supporting surface and the pin are fitted together in a plane.

[0016] Furthermore, the fixing block is sleeved on the guide column, a nut is threadedly connected to the guide column, and the nut tightens the fixing block against the lower side wall of the limiting groove.

[0017] Furthermore, the second guiding inclined surface and the third guiding inclined surface are replaced by conical surfaces.

[0018] (III) Beneficial effects

[0019] The utility model provides a limiting device for a flue air exchanger, which has the following beneficial effects: when the baffle moves to an open position along the guide rail under the action of a driving unit, the column pin and the limiting groove are arranged opposite to each other and are located between the fixed block and the sliding block. At this time, the guide rail releases the restriction on the column pin, and the column pin extends into the limiting groove and abuts against the first supporting surface of the fixed block, and a support limit is formed for the column pin and the baffle through the fixed block. This structure does not require a cylinder limit, the overall structure is simple, and is not affected by power failure, and has good reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the flue exchanger in the utility model;

[0021] Figure 2 This is a schematic diagram of the state in which the limiting device in the utility model functions to form a limiting support for the baffle;

[0022] Figure 3 for Figure 2 The schematic diagram of the structure after partial enlargement of A in the middle;

[0023] Figure 4 for Figure 2 Schematic diagram of the structure after the fixed block and sliding block are enlarged.

[0024] In the figure:

[0025] 100, kiln body; 101, first flue; 102, second flue;

[0026] 11. Motor; 12. Baffle; 13. Exhaust port; 14. Guide rail; 14a. Limiting groove; 15. Housing;

[0027] 21. pin; 22. fixing block; 22a. arc-shaped groove; 22b. fitting groove; 22c. step hole; 23. sliding block; 23a. second guide slope; 23b. third guide slope; 24. guide column; 25. first spring; 26. roller; 27. guide sleeve; 28. plug; 29. ​​second spring; DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See attached Figure 1 A flue air exchanger includes a first flue 101 and a second flue 102 arranged on both sides of a kiln body 100, and a baffle 12 arranged at the first flue 101 and the second flue 102. The baffle 12 slides up and down along a guide rail 14 under the action of a driving unit to realize the opening and closing switching of the first flue 101 and the second flue 102. Specifically, the top walls of the first flue 101 and the second flue 102 are both provided with openings and covered with a shell 15. A pair of guide rails 14 are respectively provided at the front and rear sides of the flue and extend upward into the shell 15. The baffle 12 is slidably supported on the pair of guide rails 14. A motor 11 is installed on the top of the shell 15, and an exhaust port 13 is opened on the side. A traction rope is wound on the output end of the motor 11 through a take-up wheel. The traction rope extends into the shell 15 and is connected to the top of the baffle 12.

[0030] The limiting device of the utility model is mainly used to limit the baffle 12 in the open state. Figure 2 , Figure 3 As shown, the limiting device includes a pin 21, a fixed block 22, a sliding block 23 and a guide column 24. The pin 21 is arranged at the position where the baffle 12 and the guide rail 14 are in conflict. The pin 21 can elastically shrink inside the baffle 12 or elastically extend to the outside of the baffle 12. A limiting groove 14a is installed on the guide rail 14. The fixed block 22, the sliding block 23 and the guide column 24 are all arranged in the limiting groove 14a. The guide column 24 is fixedly connected to the guide rail 14 and extends along the moving direction of the baffle 12. The fixed block 22 is fixed on the guide column 24, and the sliding block 23 is slidably installed on the guide column 24. The upper side of the fixed block 22 is provided with a first supporting surface, and the lower side and upper side of the sliding block 23 are respectively provided with a second guide inclined surface 23a and a third guide inclined surface 23b.

[0031] The opening process of the baffle 12: When the baffle 12 is moved up and opened under the drive of the motor 11 and the traction rope, the pin 21 is restricted by the guide rail 14 and elastically shrinks inside the baffle 12. When the baffle 12 moves up to the open position, the pin 21 is opposite to the limit groove 14a and elastically extends outward. The pin 21 abuts against the first supporting surface of the fixed block 22, and the fixed block 22 forms a support limit for the pin 21 and the baffle 12.

[0032] The closing process of the baffle 12: the baffle 12 continues to move upward under the drive of the motor 11 and the traction rope, so that the pin 21 passes over the second guide slope 23a of the sliding block 23 and then continues to elastically extend outward and abuts against the third guide slope 23b. Then, the baffle 12 moves downward under the drive of the motor 11 and the traction rope, and forces the sliding block 23 to overcome the force of the first spring 25 and move downward until it abuts against the fixed block 22. Finally, the pin 21 passes over the sliding block 23 and the fixed block 22 and then returns to the state of abutting against the guide rail 14 and shrinking inside the baffle 12.

[0033] In this embodiment, the first supporting surface of the fixed block 22 is connected to the end surface of the guide rail 14 through a rounded corner. At the same time, an engaging groove 22b that fits with the sliding block 23 can be set on the upper side of the fixed block 22 to reduce the gap between the sliding block 23 and the fixed block 22 when the sliding block 23 and the fixed block 22 are in abutment with each other, so that the pin 21 can be smoothly retracted onto the guide rail 14.

[0034] In this embodiment, the upper end of the sliding block 23 is elastically connected to the upper side wall of the limiting groove 14a through the first spring 25, so that after the pin 21 is separated from the sliding block 23, the sliding block 23 that is against the fixed block 22 can be reset under the action of the first spring 25, so that the sliding block 23 and the fixed block 22 are kept at a distance.

[0035] In this embodiment, a roller 26 is installed at the end of the pin 21, the first support surface includes an arc-shaped groove 22a that fits with the roller 26 (in other embodiments, the first support surface also includes a plane that fits with the pin 21), the baffle 12 is provided with a perforation at the installation position of the pin 21, a guide sleeve 27 is installed in the perforation, a plug 28, a second spring 29 and the pin 21 are installed in the guide sleeve 27, the plug 28 is threadedly connected to the guide sleeve 27, the two ends of the second spring 29 are respectively against the plug 28 and the pin 21, and the pin 21 and the guide sleeve 27 are limited by a concave-convex structure. The elastic force of the spring is adjusted by rotating the plug 28, and then the position of the pin 21 after being extended is adjusted to ensure that the roller 26 and the arc-shaped groove 22a of the first support surface fit.

[0036] In this embodiment, the fixing block 22 is sleeved on the guide column 24, and a nut is threadedly connected to the guide column 24. The nut presses the fixing block 22 against the lower side wall of the limiting groove 14a (the nut specifically presses against the step surface of the step hole 22c of the fixing block 22). The detachable setting of the fixing block 22 is convenient for early processing and later replacement and maintenance.

[0037] In other embodiments, the second guiding inclined surface 23a and the third guiding inclined surface 23b are replaced by conical surfaces.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A limiting device for a flue air exchanger, the flue air exchanger comprising a first flue and a second flue arranged on both sides of a kiln body, baffles arranged at the first flue and the second flue, the baffles sliding up and down along a guide rail under the action of a driving unit to realize the opening and closing switching of the first flue and the second flue; characterized in that: The limiting device includes a pin, a fixed block, a sliding block and a guide post. The pin is arranged at the position where the baffle plate conflicts with the guide rail. The pin can elastically shrink inside the baffle plate or elastically extend to the outside of the baffle plate. A limiting groove is installed on the guide rail. The fixed block, the sliding block and the guide post are all arranged in the limiting groove. The guide post is fixedly connected to the guide rail and extends along the moving direction of the baffle plate. The fixed block is fixed on the guide post, and the sliding block is slidably installed on the guide post. The upper side of the fixed block is provided with a first supporting surface, and the lower side and upper side of the sliding block are respectively provided with a second guide inclined surface and a third guide inclined surface.

2. A limiting device for a flue air exchanger according to claim 1, characterized in that: The upper end of the sliding block is elastically connected to the upper side wall of the limiting groove through a first spring, so that the sliding block is spaced apart from the fixed block.

3. A limiting device for a flue air exchanger according to claim 2, characterized in that: The baffle is provided with a through hole at the pin installation position, a guide sleeve is installed in the through hole, a plug, a second spring and a pin are installed in the guide sleeve, the plug is threadedly connected to the guide sleeve, the two ends of the second spring are respectively against the plug and the pin, and the pin and the guide sleeve are limited by a concave-convex structure.

4. A limiting device for a flue air exchanger according to claim 3, characterized in that: A roller is installed at the end of the pin.

5. A limiting device for a flue air exchanger according to claim 4, characterized in that: The first supporting surface includes an arc-shaped groove that fits with the roller.

6. A limiting device for a flue air exchanger according to claim 4, characterized in that: The first supporting surface and the column pin are fitted together through a plane.

7. A limiting device for a flue air exchanger according to claim 1, characterized in that: The fixing block is sleeved on the guide column, and a nut is threadedly connected on the guide column, and the nut presses the fixing block tightly against the lower side wall of the limiting groove.

8. A limiting device for a flue air exchanger according to claim 1, characterized in that: The second guide slope and the third guide slope are replaced by conical surfaces.

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