Self-sealing type cold air flap valve

Abstract

The self-sealing type cold air flap valve comprises a square shell, an electric actuator and two air blocking valve plates, the square shell is welded and fixed to an air duct, lifting lugs are symmetrically welded to the upper side and the lower side of the square shell, triangular side plates are symmetrically welded to the two sides of the opening end of the square shell, and the triangular side plates are welded to the two sides of the opening end of the square shell. The utility model relates to the technical field of cold air valves of cement manufacturing industry systems, in particular to a self-sealing type cold air flap valve which is simple in structure, convenient to operate, low in cost and high in practicability. The sealing device is simple in structure and convenient to operate, after the position of the transmission pin is finely adjusted and positioned through the fine adjustment supporting assembly, under the action of the electric actuator, the sealing edges on the air blocking valve plate and the shell generate mutual acting force to extrude the soft sealing rubber strip, the sealing effect is achieved, and the ideal sealing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold air valves in a cement manufacturing industry system, in particular to a self-sealing cold air flap valve. Background Art

[0002] The cold air valve is installed on the cold air branch of the system pipeline. It opens when the system temperature is too high to reduce the gas temperature in the system. At present, butterfly valves, shutter valves, and plug valves are generally used in the cement production industry. However, due to design defects, these cold air valves still leak after they are all closed. Especially in the vertical mill system of the cement production industry, system leakage not only reduces the inlet air temperature of the vertical mill and reduces the hourly output of the vertical mill, but also increases the oxygen content in the exhaust gas, increases the measured concentration of nitrogen oxides in the online monitoring system at the kiln tail, and causes an increase in ammonia consumption. In the actual production process, on-site personnel are required to manually seal, resulting in an increase in workload. In view of this, in-depth research on the above issues led to the creation of this case. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a self-sealing cold air flap valve, which solves the problems raised in the background technology.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a self-sealing cold air flap valve, including a square shell, an electric actuator and two windshield valve plates, the square shell is welded and fixed to the air duct, the square shell is symmetrically welded with lifting ears on the upper and lower sides, and the square shell has triangular side panels symmetrically welded on both sides of the open end, the electric actuator is respectively connected to the lifting ears and the windshield valve plates through a transmission pin, one end of the windshield valve plate is rotatably matched with the lifting ears through a transmission pin, and a fine-tuning support assembly is provided at the position of the transmission pin.

[0005] The above-mentioned fine-tuning support assembly includes a support arranged on the lifting ear and the side wall of the windshield valve plate, a support sleeve is arranged on the top of the support, threaded holes are opened along the circular array on the support sleeve, adjusting bolts are screwed into the threaded holes, a bearing is arranged in the support sleeve, the adjusting bolts are tightly attached to the outer ring surface of the bearing, and the transmission pin is interference fit with the inner ring surface of the bearing.

[0006] The triangular side plates and the end edges of the square shell are both provided with sealing edges.

[0007] The windshield valve plates are arranged in a herringbone shape and matched with the triangular side plates, and the top end surface of the herringbone structure formed by the windshield valve plates is an inclined surface.

[0008] The inner edge of the windshield valve plate and the top of the herringbone structure are both pasted with soft sealing strips.

[0009] The electric actuator is one of an electric telescopic rod, a pneumatic telescopic rod or a hydraulic telescopic rod.

[0010] The utility model provides a self-sealing cold air flap valve. It has the following beneficial effects:

[0011] (1) Traditional flap valves and louver valves have large air leakage coefficients due to gaps between the valve plates and the shell. The self-sealing cold air flap valve designed in this application has a simple structure and is easy to operate. After the position of the transmission pin is fine-tuned and positioned using the fine-tuning support assembly, the sealing edges on the windshield valve plate and the shell generate mutual force to squeeze the soft sealing strip under the action of the electric actuator, thereby producing a sealing effect and achieving an ideal sealing effect.

[0012] (2) The self-sealing cold air valve is easy to maintain. If the sealing effect is not good, you only need to replace the sealing strip and then adjust the drive pin to the appropriate position to restore its sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main structure of the self-sealing cold air flap valve of the utility model.

[0014] Figure 2 For this utility model Figure 1 Schematic diagram of the local enlarged structure at position a.

[0015] Figure 3 It is a schematic diagram of the partial axonometric structure of the fine-tuning support assembly of the utility model.

[0016] Figure 4 For this utility model Figure 3 Schematic diagram of the side cross-sectional structure.

[0017] In the figure: 1. square shell; 2. triangular side panel; 3. wind deflector plate; 4. soft sealing strip; 5. electric actuator; 6. transmission pin; 7. sealing edge; 8. lifting ear; 9. adjusting bolt; 10. bearing; 11. support. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0019] Embodiment: In conjunction with the specification Figure 1-4It can be seen that in order to solve the problem of large air leakage coefficient of traditional flap valves and shutter valves in the prior art due to gaps between valve plates and shells, the present application specifically designs a self-sealing cold air flap valve, which mainly includes a square shell 1, an electric actuator 5 and two windshield valve plates 3, wherein the square shell 1 is welded and fixed to the air duct, and ears 8 are symmetrically welded on the upper and lower sides of the square shell 1, and triangular side plates 2 are symmetrically welded on both sides of the opening end of the square shell 1, and sealing edges 7 are provided on the triangular side plates 2 and the end edges of the square shell 1, and the electric actuator 5 is respectively connected to the ear 8 and the windshield valve plate 3 through a transmission pin 6, and one end of the windshield valve plate 3 is rotatably matched with the ear 8 through the transmission pin 6, and the two windshield valve plates 3 are in a state of being ... It is arranged in a herringbone shape and matches the triangular side panel 2. The top end face of the herringbone structure formed by the windshield valve plate 3 is an inclined surface, wherein the inner edge of the windshield valve plate 3 and the top of the herringbone structure are both pasted with a soft sealing strip 4. A fine-tuning support assembly is provided at the position of the transmission pin 6. After the position of the transmission pin 6 is fine-tuned and positioned by the fine-tuning support assembly, under the action of the electric actuator 5, the windshield valve plate 3 and the sealing edge 7 on the shell generate mutual force to squeeze the soft sealing strip 4, thereby generating a sealing effect and achieving an ideal sealing effect. In addition, the self-sealing cold air valve is easy to maintain. In the case of a poor sealing effect, it is only necessary to simply replace the sealing strip and then adjust the transmission pin 6 to an appropriate position to restore its sealing effect.

[0020] In the specific implementation process, the above-mentioned fine-tuning support assembly includes a support 11 arranged on the lifting ear 8 and the side wall of the windshield valve plate 3, a support sleeve is arranged on the top of the support 11, threaded holes are opened along the annular array on the support sleeve, and adjusting bolts 9 are screwed into the threaded holes. A bearing 10 is arranged in the support sleeve, and the adjusting bolts 9 are tightly attached to the outer ring surface of the bearing 10, and the transmission pin 6 is interference fit with the inner ring surface of the bearing 10. The transmission pin 6 of the self-sealing cold air valve uses the adjusting bolt 9 to position the bearing 10, so that fine adjustment in any direction can be achieved, so that the sealing effect of the sealing surface is further improved. The self-sealing cold air valve has a simple structure and is easy to operate. Even if the moving parts are worn, fine adjustment using the adjusting bolt 9 can still achieve an ideal sealing effect.

[0021] In the specific implementation process, as a preferred configuration, the electric actuator 5 is one of an electric telescopic rod, a pneumatic telescopic rod or a hydraulic telescopic rod, and the electric actuator 5 uses mechanical transmission to control the opening of the windshield valve plate 3.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Self-sealing cold air flap valve, characterized in that: It includes a square shell, an electric actuator and two windshield valve plates. The square shell is welded and fixed to the air duct. Lifting ears are symmetrically welded on the upper and lower sides of the square shell. Triangular side panels are symmetrically welded on both sides of the opening end of the square shell. The electric actuator is respectively connected to the lifting ears and the windshield valve plates through transmission pins. One end of the windshield valve plate is rotatably matched with the lifting ears through a transmission pin. A fine-tuning support assembly is arranged at the position of the transmission pin.

2. The self-sealing cold air flap valve according to claim 1, characterized in that: The fine-tuning support assembly includes a support arranged on the lifting ear and the side wall of the windshield valve plate, a support sleeve is arranged on the top of the support, threaded holes are opened along the circular array on the support sleeve, adjusting bolts are screwed into the threaded holes, a bearing is arranged in the support sleeve, the adjusting bolts are tightly attached to the outer ring surface of the bearing, and the transmission pin is interference fit with the inner ring surface of the bearing.

3. The self-sealing cold air flap valve according to claim 1, characterized in that: The triangular side plate and the end edge of the square shell are both provided with sealing edges.

4. The self-sealing cold air flap valve according to claim 1, characterized in that: The two windshield valve plates are arranged in a herringbone shape and matched with the triangular side plates, and the top end surface of the herringbone structure formed by the windshield valve plates is an inclined surface.

5. The self-sealing cold air flap valve according to claim 4, characterized in that: The inner edge of the windshield valve plate and the top of the herringbone structure are both pasted with soft sealing strips.

6. The self-sealing cold air flap valve according to claim 1, characterized in that: The electric actuator is one of an electric telescopic rod, a pneumatic telescopic rod or a hydraulic telescopic rod.

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