Ash removal valve and combustion furnace applying same

Abstract

The utility model provides an ash removal valve and a combustion furnace using the same. The ash removal valve comprises a valve body, a valve seat, a valve cover and a driving mechanism. A dust removal channel penetrating through the valve body is formed in the valve body and comprises a dust inlet end and a dust outlet end. The valve seat is fixedly connected to the position, close to the dust inlet end of the dust removal channel, in the valve body, and a dust removal opening is formed in the valve seat. A blocking face is arranged on the valve cover, and the blocking face can be allowed to block the dust removal opening. And the driving mechanism is connected with the valve cover through a supporting head. Wherein the supporting head is of a spherical structure, and the valve cover is connected to the supporting head in a rotatable mode. According to the ash removal valve, the problem that in the ash deposition treatment process of an existing combustion furnace, gaps exist in the butt joint process of an ash removal opening between the valve deck and the valve seat, so that the using effect of the ash removal valve is poor can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion furnace ash cleaning, in particular to a ash cleaning valve and a combustion furnace using the same. Background Art

[0002] During the use of the combustion furnace, the ash cleaning valve is usually set under the gas rough dust collector. When the gas ash is deposited at the contraction nozzle at the bottom of the rough dust collector, the ash cleaning valve can be used to release the gas ash regularly. The working pressure of the ash cleaning valve when it is emptied is equal to the furnace top pressure of the blast furnace, and the working temperature of the ash cleaning valve is 300℃.

[0003] At present, in the actual use of the existing cleaning valve, the valve cover and the valve seat are prone to misalignment during the docking process, so that there is a gap between the cleaning port of the valve cover and the valve seat during the docking process, resulting in poor use of the cleaning valve. Utility Model Content

[0004] The utility model provides a cleaning valve and a combustion furnace using the same, so as to improve the problem that in the process of ash accumulation treatment in the existing combustion furnace, a gap exists in the cleaning port between the valve cover and the valve seat during the docking process, resulting in poor use effect of the cleaning valve.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a dust cleaning valve, which includes:

[0006] The valve body is provided with a dust cleaning passage penetrating the valve body, wherein the dust cleaning passage comprises a dust inlet end and a dust outlet end;

[0007] A valve seat is fixedly connected to the valve body at a position close to the dust inlet end of the dust cleaning channel, and a dust cleaning port is provided on the valve seat;

[0008] The valve cover is provided with a sealing surface, and the sealing surface can be sealed at the ash cleaning port; and

[0009] A driving mechanism, which is connected to the valve cover via a supporting head, and the driving mechanism is used to drive the valve cover and the valve seat to open or close;

[0010] Wherein, the support head is a spherical structure, and the valve cover is rotatably connected to the support head.

[0011] In an embodiment of the present invention, the blocking surface includes an annular inclined surface.

[0012] In one embodiment of the utility model, the ash cleaning port is designed as a slope structure, and the slope of the ash cleaning port and the annular slope of the blocking surface fit each other, so that the valve cover blocks the ash cleaning port.

[0013] In one embodiment of the present invention, the driving mechanism comprises:

[0014] A drive shaft is rotatably connected to the valve body, and the drive shaft is fixedly connected to a power source, and the power source can drive the drive shaft to rotate;

[0015] A connecting rod, one end of which is detachably fixedly connected to the driving shaft; and

[0016] A support column, one end of which is fixedly connected to the other end of the connecting rod, and the other end of which is fixedly connected to the support head.

[0017] In one embodiment of the utility model, a spherical mounting groove is provided on the valve cover, and a gland having an opening is detachably connected to the outer side of the mounting groove;

[0018] Wherein, the support head is located in the installation groove, and the support column passes through the opening, and the diameter of the opening is smaller than the diameter of the support head.

[0019] In one embodiment of the utility model, the power source is a cycloidal pinwheel reducer and a motor, the motor is connected to the cycloidal pinwheel reducer, and the main shaft of the cycloidal pinwheel reducer is connected to the drive shaft through a gear pair.

[0020] In one embodiment of the present invention, it further includes: a limiting component, the limiting component includes:

[0021] A limit stopper fixedly connected to the driving shaft;

[0022] A lever, fixedly connected to the limit stopper; and

[0023] two limit switches, which are installed on the side wall of the valve body and are respectively located at the limit positions of the maximum stroke on both sides of the lever, and the limit switches are electrically connected to the control circuit of the power source;

[0024] When the lever touches the limit switch and closes the limit switch, the control circuit controls the motor to stop working. When the motor starts and drives the lever to leave the limit switch, the limit switch is automatically disconnected.

[0025] In one embodiment of the utility model, it also includes: a shrink tube,

[0026] The shrink tube is fixedly installed at the dust inlet end of the valve body dust cleaning channel.

[0027] In an embodiment of the utility model, a notch is further provided on the valve body, and a sealing plate is detachably connected to the notch.

[0028] The utility model also provides a combustion furnace, comprising any one of the above-mentioned ash cleaning valves.

[0029] In summary, the utility model discloses a cleaning valve and a combustion furnace using the same. The cleaning valve uses a spherical support head to allow the valve cover to be adaptively adjusted based on the support head, so that the valve cover can be automatically centered and reset when closed. At the same time, when the valve is fully opened or fully closed, the lever just presses against the limit switch, and the cycloid pinwheel reducer is controlled to stop working through the limit switch data line. This can effectively improve the problem of poor use of the cleaning valve due to the gap between the cleaning port of the valve cover and the valve seat during the docking process during the ash accumulation treatment process of the existing combustion furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of a dust removal valve provided in an embodiment of the utility model

[0032] Figure 2 A schematic structural diagram of a cross-section of a dust cleaning valve provided in one embodiment of the utility model;

[0033] Figure 3 for Figure 2 Schematic diagram of the structure of the AA section;

[0034] Figure 4 for Figure 3 Schematic diagram of the structure from the perspective of middle B;

[0035] Figure 5 A schematic structural diagram of another state of a dust cleaning valve provided in one embodiment of the utility model.

[0036] Description of Figure Numbers

[0037] 1. Valve body; 101. Dust removal channel; 102. Notch; 103. Sealing plate;

[0038] 2. Valve seat; 201. Cleaning port;

[0039] 3. Valve cover; 301. Sealing surface; 302. Mounting groove; 310. Gland; 311. Opening;

[0040] 4. Driving mechanism; 401. Support head; 410. Driving shaft; 411. Connecting key; 420. Connecting rod; 430. Support column; 440. Power source; 441. Motor; 442. Cycloidal pinwheel reducer;

[0041] 5. Limiting component; 501. Limiting block; 502. Push rod; 503. Limit switch;

[0042] 6. Shrink tube. DETAILED DESCRIPTION

[0043] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0044] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0045] See also Figures 1 to 5 The utility model discloses a dust cleaning valve, which includes a valve body 1, a valve seat 2, a valve cover 3 and a driving mechanism 4. A dust cleaning channel 101 is provided on the valve body 1 and runs through the entire valve body 1, and the dust cleaning channel 101 includes a dust inlet end and a dust outlet end, and the accumulated dust for treatment can be allowed to pass through the dust cleaning channel 101. A dust cleaning port 201 is provided on the valve seat 2, and the valve cover 3 can be allowed to be blocked in the dust cleaning port 201. Therefore, the opening and closing of the dust cleaning port 201 is regulated by the valve cover 3 to determine whether the accumulated dust can pass through the dust cleaning channel 101.

[0046] See also Figures 1 to 5 In one embodiment, the valve seat 2 is fixedly connected to the valve body 1, and the valve seat 2 is located at a port position of the cleaning channel 101. The valve seat 2 and the valve body 1 can be welded or integrally formed. However, it is not limited to this and can be determined according to actual needs. Specifically, a sealing surface 301 is provided on the valve cover 3, and the sealing surface 301 can be allowed to fit in the cleaning port 201. It can be understood that when the sealing surface 301 of the valve cover 3 fits in the edge position of the cleaning port 201, the cleaning channel 101 of the valve body 1 is in a closed state.

[0047] Furthermore, in order to improve the sealing effect between the valve seat 2 and the valve cover 3, it is allowed to set the edge of the cleaning port 201 to a structural state that matches the sealing surface 301. For example, in one embodiment, the sealing surface 301 is an annular slope. In this case, the edge of the cleaning port 201 is also set to an annular slope structure. At the same time, the taper of the annular slope located at the cleaning port 201 is the same as the taper of the sealing surface 301. Therefore, by adapting the sealing surface 301 of the valve cover 3 to the shape of the cleaning port 201 on the valve seat 2, the actual sealing effect can be effectively improved.

[0048] See also Figures 1 to 5 In one embodiment, the driving mechanism 4 is connected to the valve cover 3 , and the driving mechanism 4 can be used to drive the valve cover 3 and the valve seat 2 to open and close.

[0049] It should be noted that the driving mechanism 4 and the valve cover 3 are connected via a support head 401. The support head 401 is a spherical structure, and the valve cover 3 can be allowed to rotate relative to the support head 401. Therefore, when the driving mechanism 4 drives the valve cover 3 to close the ash cleaning port 201, the valve cover 3 can be adaptively adjusted based on the support head 401, so that the valve cover 3 can automatically center and reset when closed.

[0050] Furthermore, the driving mechanism 4 may include a driving shaft 410 , a connecting rod 420 , a supporting column 430 and a power source 440 .

[0051] Specifically, the drive shaft 410 is rotatably connected to the valve body 1, and the drive shaft 410 is in transmission connection with the power source 440. Therefore, the drive shaft 410 can be driven to rotate by the power source 440. For example, in one embodiment, the power source 440 can be a combination of a cycloid reducer 442 and a motor 441, and the main shaft of the cycloid reducer 442 is in transmission connection with the drive shaft 410 through a gear pair.

[0052] See also Figures 1 to 5 In one embodiment, a pinion is fixedly connected to the main shaft of the cycloid reducer 442, and a large gear is fixedly connected to the drive shaft 410. The pinion and the large gear are meshed. The motor 441 drives the drive shaft 410 to rotate through the meshing transmission between the cycloid reducer 442 and the pinion and the large gear. The pinion drives the large gear to rotate, and the large gear drives the drive shaft 410 to rotate, and the drive shaft 410 drives the connecting rod 420 to swing through the connecting key 411.

[0053] In order to improve the actual use effect of the device and limit the rotation angle of the drive shaft 410. A limit component 5 is also provided on the drive shaft 410, and the limit component 5 is control-connected to the power source 440. Specifically, the limit component 5 may include a limit block 501, a lever 502 and two limit switches 503. The limit block 501 is fixedly connected to the drive shaft 410, and the lever 502 is fixedly connected to the limit block 501. The two limit switches 503 are control-connected in the control circuit of the power source 440, and when the limit switch 503 is triggered, a trigger signal can be generated. And, when the power source 440 receives the trigger signal, it can stop rotating.

[0054] It should be noted that the two limit switches 503 are respectively located on both sides of the lever 502, installed on the side wall of the valve body 1 and respectively located at the limit positions of the maximum stroke on both sides of the lever 502. When the lever 502 rotates with the limit block 501, the lever 502 can allow the limit switch 503 to be triggered. Specifically, when the valve is fully opened or fully closed, the lever 502 just presses against the limit switch 503, and the cycloid pinwheel reducer 442 is controlled to stop working through the data line of the limit switch 503. For example, when the lever 502 touches the limit switch 503 and closes the limit switch 503, the control circuit controls the motor 441 to stop working. When the motor 441 is started and drives the lever 502 to leave the limit switch 503, the limit switch 503 is automatically disconnected.

[0055] Further, one end of the connecting rod 420 is connected to the driving shaft 410, and the other end is connected to the support column 430. Specifically, keyways are provided on the connecting rod 420 and the driving shaft 410, respectively, and a limit key may be provided in the keyway. The limit key allows the connecting rod 420 and the driving shaft 410 to rotate synchronously. At the same time, the support column 430 and the connecting rod 420 may be connected by threads so that the support column 430 and the connecting rod 420 are fixedly connected. It should be noted that the support head 401 is fixedly connected to the support column 430.

[0056] See also Figures 1 to 5 In one embodiment, a notch 102 is further provided on the valve body 1, and a sealing plate 103 is detachably connected to the notch 102. The notch 102 is provided with the dust removal channel 101, so that the inside of the valve body 1 can be cleaned through the notch 102.

[0057] Meanwhile, a spherical mounting groove 302 is provided on the valve cover 3, and a gland 310 provided with an opening 311 is detachably connected to the outside of the mounting groove 302, and the diameter of the opening 311 is smaller than the diameter of the support head 401. It can be understood that the spherical support head 401 is located in the mounting groove 302, so as to prevent the support head 401 from being separated from the valve cover 3 through the gland 310. Meanwhile, the support column 430 is provided through the opening 311.

[0058] The valve cover 3 is also allowed to be connected with a shrink tube 6, and the shrink tube 6 is located at the dust inlet end. The shrink tube 6 is mainly connected to the coarse dust collector and is used to receive gas dust. The shrink tube 6 facilitates dust to enter the dust cleaning valve.

[0059] The utility model also provides a combustion furnace, which comprises the ash cleaning valve as in the above embodiment.

[0060] It should be noted that the combustion furnace may be a layer combustion furnace, a chamber combustion furnace, a cyclone furnace, a fluidized bed combustion furnace or various types of blast furnaces. However, it is not limited thereto, and the combustion furnace may be determined according to actual needs, as long as it can produce ash accumulation.

[0061] In summary, the utility model discloses a cleaning valve and a combustion furnace using the same, wherein the cleaning valve uses a spherical support head 401 to allow the valve cover 3 to be adaptively adjusted based on the support head 401, thereby allowing the valve cover 3 to automatically center and reset when closed. At the same time, when the valve is fully opened or fully closed, the lever 502 is pressed against the limit switch 503, and the cycloid reducer 442 is controlled to stop working through the data line of the limit switch 503.

[0062] Therefore, the problem that during the ash accumulation treatment process of the existing combustion furnace, a gap exists in the ash cleaning port 201 between the valve cover 3 and the valve seat 2 during the docking process, resulting in poor use effect of the ash cleaning valve can be effectively improved.

[0063] The above description of the illustrated embodiments of the present invention (including that described in the Abstract of the Specification) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and understood by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments described in the present invention, and these modifications will be within the spirit and scope of the present invention.

Claims

1. A cleaning valve, characterized in that: include: The valve body (1) is provided with a dust cleaning channel (101) penetrating the valve body (1), wherein the dust cleaning channel (101) comprises a dust inlet end and a dust outlet end; A valve seat (2) is fixedly connected to the valve body (1) at a position close to the dust inlet end of the dust cleaning channel (101), and a dust cleaning port (201) is provided on the valve seat (2); The valve cover (3) is provided with a sealing surface (301), and the sealing surface (301) can be sealed at the ash cleaning port (201); and A driving mechanism (4), which is connected to the valve cover (3) via a supporting head (401), and the driving mechanism (4) is used to drive the valve cover (3) and the valve seat (2) to open or close; Wherein, the support head (401) is a spherical structure, and the valve cover (3) is rotatably connected to the support head (401).

2. The ash cleaning valve according to claim 1, characterized in that: The sealing surface (301) comprises an annular inclined surface.

3. The ash cleaning valve according to claim 2, characterized in that: The ash cleaning port (201) is designed as a sloped structure, and the slope of the ash cleaning port (201) and the annular slope of the blocking surface (301) fit each other, thereby enabling the valve cover (3) to block the ash cleaning port (201).

4. The ash cleaning valve according to claim 1, characterized in that: The driving mechanism (4) comprises: A drive shaft (410) is rotatably connected to the valve body (1), and the drive shaft (410) is fixedly connected to a power source (440), and the power source (440) can drive the drive shaft (410) to rotate; a connecting rod (420), one end of which is detachably fixedly connected to the driving shaft (410); and A support column (430) has one end fixedly connected to the other end of the connecting rod (420) and the other end fixedly connected to the support head (401).

5. The ash cleaning valve according to claim 4, characterized in that: The valve cover (3) is provided with a spherical installation groove (302), and a pressure cover (310) including an opening (311) is detachably connected to the outer side of the installation groove (302); Wherein, the support head (401) is located in the installation groove (302), and the support column (430) passes through the opening (311), and the diameter of the opening (311) is smaller than the diameter of the support head (401).

6. The ash cleaning valve according to claim 4, characterized in that: The power source (440) is a cycloidal pinwheel reducer (442) and a motor (441), the motor (441) is connected to the cycloidal pinwheel reducer (442), and the main shaft of the cycloidal pinwheel reducer (442) is connected to the drive shaft (410) via a gear pair.

7. The ash cleaning valve according to claim 6, characterized in that: Also includes: A limiting component (5), wherein the limiting component (5) comprises: A limit stopper (501) fixedly connected to the driving shaft (410); A lever (502) fixedly connected to the limit stopper (501); and two limit switches (503) installed on the side wall of the valve body (1) and respectively located at the limit positions of the maximum stroke on both sides of the lever (502), the limit switches (503) being electrically connected to the control circuit of the power source (440); When the lever (502) touches the limit switch (503) and closes the limit switch (503), the control circuit controls the motor (441) to stop working; when the motor (441) starts and drives the lever (502) to leave the limit switch (503), the limit switch (503) is automatically disconnected.

8. The ash cleaning valve according to claim 1, characterized in that: Also includes: Shrink Tube, The shrink tube is fixedly mounted at the dust inlet end of the dust cleaning channel (101) of the valve body (1).

9. The ash cleaning valve according to claim 1, characterized in that: The valve body (1) is also provided with a notch (102), and a sealing plate (103) is detachably connected to the notch (102).

10. A combustion furnace, characterized in that: It comprises a cleaning valve as described in any one of claims 1 to 9.

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