Novel pneumatic high-temperature-resistant blanking valve

Abstract

The utility model relates to the field of iron alloy smelting equipment, in particular to a novel pneumatic high-temperature-resistant blanking valve, which mainly comprises a valve body, a valve core, a sealing mechanism, a driving mechanism and the like. The valve element and the sealing mechanism are installed in the valve body, and the driving mechanisms are installed on the two sides of the valve body. The valve body is formed by welding a flange, a middle barrel, a valve core supporting shaft sleeve, a driving mechanism mounting base and a sealing mechanism mounting platform; the valve core is formed by welding a cylindrical arc-shaped plate, a rib plate, a connecting plate and a thickened flange; the sealing mechanism comprises an inner cylinder, a sealing mechanism connecting plate, a guide supporting screw rod, a sealing piece and an outer cylinder, and the sealing piece can move up and down; the driving mechanism is composed of a support, a connecting base, a first pin shaft, an air cylinder, a crank, a shaft end baffle, a graphite copper sleeve, a transmission shaft, a second pin shaft and an air cylinder head fork head. The valve element rotates by controlling the action of the air cylinder, and then opening and closing are controlled. The valve overcomes the defects of a hydraulic gate valve and a semi-ball valve, and is good in sealing performance and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the field of ferroalloy smelting equipment, in particular to a novel pneumatic high-temperature resistant feeding valve. Background Art

[0002] The discharge valve is one of the important mechanical equipment of the submerged arc furnace. It is installed between the bottom of the silo and the feed pipe of the submerged arc furnace to control the addition of the charge. Its performance directly affects the smelting situation and automatic control level of the submerged arc furnace. At present, the RKEF process is generally used to smelt nickel iron in laterite nickel ore. When this process is adopted, the temperature of the hot roasted sand entering the silo is nearly 850℃, causing the discharge valve to work in a high temperature environment, seriously affecting the performance and life of the valve. At present, hydraulic gate valves or hemispherical valves are mainly used as discharge valves. The valve core of the hydraulic gate valve is a flat plate structure. The part that contacts the hot material is prone to large deformation under the pressure and high temperature of the hot material, causing the flatness of the gate to change too much, resulting in sealing failure and the gate stuck. In this case, the gate has to be replaced for maintenance. The valve core of the hemispherical valve is a cast hemisphere, which has high precision requirements and high manufacturing costs. The hydraulic gate valve is too large in the plane direction, and the hemispherical valve is too large in diameter and height and too heavy, both of which occupy too much space above the furnace, which is not conducive to the layout of other equipment, nor is it conducive to the arrangement of safe passages and operating space for staff; secondly, due to the sealing structure and sealing packing, the above two valves often leak due to wear of sealing materials. The leaked flue gas not only pollutes the working environment but also causes health hazards to on-site personnel; in addition, the maintenance frequency of the above two discharge valves is high, which has a great adverse impact on the normal production of smelting enterprises. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a novel pneumatic high-temperature resistant discharge valve, in which both the valve body and the valve core are welded structures, which reduces the manufacturing cost to a certain extent; the lower end of the seal is shaped as an intersecting line and can move up and down, and a good fit is formed between the cylindrical arc plate of the valve core and the seal of the sealing mechanism, and the sealing is achieved by relying on the dead weight of the seal, thereby avoiding leakage caused by wear of the sealing material; the valve core is made of heat-resistant stainless steel material 06Cr25Ni20, which effectively increases the service life of the valve; the sealing mechanism is installed inside the valve body in a detachable form, which is convenient for replacing severely worn seals; the driving mechanism is installed on the valve body and is controlled by a cylinder, thereby avoiding fire caused by hydraulic oil leakage in a high-temperature environment.

[0004] The utility model solves the technical problem of the technical solution adopted as follows: a new pneumatic high temperature resistant feed valve, mainly composed of a valve body 1, a valve core 2, a sealing mechanism 3 and a drive mechanism 4; Its components are as follows: the valve body 1 is composed of a flange 101, an intermediate cylinder 102, a valve core support sleeve 103, a drive mechanism mounting base 104 and a sealing mechanism mounting platform 105; the valve core 2 is composed of a cylindrical arc plate 201, a rib plate 202, a connecting plate 203 and a thick flange 204; the sealing mechanism 3 is composed of an inner cylinder 301, a sealing mechanism connecting plate 302, a guide support screw 303, a sealing member 304 and an outer cylinder 305; the driving mechanism 4 is composed of a bracket 401, a connecting seat 402, a first pin 403, a cylinder 404, a crank 405, a shaft end baffle 406, a graphite copper sleeve 407, a transmission shaft 408, a second pin 409 and a cylinder head fork 410; the valve core 2 and the sealing mechanism 3 are installed inside the valve body 1, the sealing mechanism connecting plate 302 is connected to the sealing mechanism mounting platform 105, and two sets of driving mechanisms 4 are respectively installed on the driving mechanism mounting bases 104 on the left and right sides of the valve body 1.

[0005] Furthermore, the upper and lower flanges 101, the middle cylinder 102, the left and right valve core support sleeves 103, the four drive mechanism mounting bases 104 and the sealing mechanism mounting platform 105 constituting the valve body 1 are connected by welding, and the sealing mechanism mounting platform 105 is welded inside the middle cylinder 102 near the upper end flange 101.

[0006] Furthermore, the cylindrical arc plate 201, rib plate 202, connecting plate 203 and thick flange 204 constituting the valve core 2 are all made of 06Cr25Ni20; the two thick flanges 204 are respectively welded on the rib plates 202 on both sides of the valve core 2 and then welded together with the cylindrical arc plate 201 and the two connecting plates 203.

[0007] Furthermore, the inner cylinder 301, the sealing mechanism connecting plate 302 and the outer cylinder 305 are welded together to form the main body of the sealing mechanism 3; the sealing member 304 is inserted between the inner cylinder 301 and the outer cylinder 305, and has 6 sealing member guide grooves 304a thereon, which together with the 6 guide support screws 303 welded on the outer cylinder 305 form an up and down movable sealing member; the lower end of the sealing member 304 is in the shape of an intersecting line, which fits with the outer surface of the cylindrical arc plate 201.

[0008] Furthermore, the cylinder 404 is connected to the connecting seat 402 through the first pin 403, and the connecting seat 402 is installed on the bracket 401; the cylinder head fork 410 is connected to the crank 405 through the second pin 409, and the other end of the crank 405 is connected to the transmission shaft 408; the shaft end baffle 406 and the spring retaining ring 408b installed at the end of the transmission shaft 408 fix the crank 405 on the transmission shaft 408 along the axial direction; the graphite copper sleeve 407 is installed in the middle of the transmission shaft 408 and the graphite copper sleeve 407 is installed in the middle of the transmission shaft 408. The copper sleeve fits on the cylindrical surface 408c, located between the thick flange 204 of the valve core 2 and the crank 405, and its outer surface contacts the inner surface of the valve core support sleeve 103; the cross-section of the crank connection end 408a is a square, and its four corners are equal-diameter arc transitions; the other end of the transmission shaft 408 has two thick flange connection keyways 408d, and the transmission shaft 408 and the valve core 2 are connected by a double key; the two ends of the crank 405 are respectively the transmission shaft installation square hole 405a and the cylinder head fork connection circular hole 405b.

[0009] The beneficial effects of the utility model are as follows: the new pneumatic high-temperature resistant discharge valve adopting the above structure and materials reduces the production cost to a certain extent; its sealing performance is significantly improved compared with the plug valve and hemispherical valve using packing seal, the service life is increased, and the maintenance frequency is reduced; in addition, the space occupied is significantly reduced, which is convenient for the layout of the equipment on the top of the ore-fired furnace, and also increases the operating space for personnel and the area of ​​the safety passage. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and typical embodiments.

[0011] Figure 1 This is a three-dimensional schematic diagram of the new pneumatic high-temperature resistant discharge valve of the utility model.

[0012] Figure 2 This is a side view (partial cross-sectional view, schematic diagram) of the new pneumatic high-temperature resistant discharge valve of the utility model.

[0013] Figure 3 This is a schematic diagram of the valve body structure of the utility model.

[0014] Figure 4 This is a schematic diagram of the valve core structure of the utility model.

[0015] Figure 5 It is a schematic diagram of the sealing mechanism of the utility model.

[0016] Figure 6 for Figure 5 Schematic diagram of the seal.

[0017] Figure 7 It is a schematic diagram of the driving mechanism of the utility model.

[0018] Figure 8 for Figure 7Schematic diagram of the drive shaft.

[0019] Fig. 9 for Figure 7 Schematic diagram of the crank.

[0020] In the figure: 1. valve body, 101. flange, 102. intermediate cylinder, 103. valve core support sleeve, 104. drive mechanism mounting base, 105. sealing mechanism mounting platform; 2. valve core, 201. cylindrical arc plate, 202. rib plate, 203. connecting plate, 204. thick flange; 3. sealing mechanism, 301. inner cylinder, 302. sealing mechanism connecting plate, 303. guide support screw, 304. sealing member, 304a. sealing member guide groove, 305. outer cylinder; 4. drive mechanism Driving mechanism, 401. bracket, 402. connecting seat, 403. first pin shaft, 404. cylinder, 405. crank, 405a. square hole for installing transmission shaft, 405b. circular hole for connecting fork head of cylinder head, 406. shaft end baffle, 407. graphite copper sleeve, 408. transmission shaft, 408a. crank connecting end, 408b. spring retaining ring, 408c. cylindrical surface matching with graphite copper sleeve, 408d. keyway for connecting thick flange, 409. second pin shaft, 410. fork head of cylinder head. DETAILED DESCRIPTION

[0021] Figure 1 , 2 The figure is a schematic diagram of the main structure of a typical embodiment of the new pneumatic high temperature resistant material discharge valve of the utility model. In the figure, the pneumatic high temperature resistant material discharge valve is mainly composed of 4 parts, namely the valve body 1, the valve core 2, the sealing mechanism 3 and the driving mechanism 4. The valve core 2 and the sealing mechanism 3 are installed inside the valve body 1, the sealing mechanism connecting plate 302 is connected to the sealing mechanism mounting platform 105, and the two sets of driving mechanisms 4 are respectively installed on the driving mechanism mounting bases 104 on the left and right sides of the valve body 1.

[0022] Figure 3 The figure is a schematic diagram of the valve body structure of the new pneumatic high temperature resistant discharge valve of the utility model. The valve body 1 is composed of a flange 101, an intermediate cylinder 102, a valve core support sleeve 103, a drive mechanism mounting base 104 and a sealing mechanism mounting platform 105; the upper and lower flanges 101, the intermediate cylinder 102, the left and right valve core support sleeves 103, the four drive mechanism mounting bases 104 and the sealing mechanism mounting platform 105 constituting the valve body 1 are connected by welding, and the sealing mechanism mounting platform 105 is welded inside the intermediate cylinder 102 near the upper flange 101.

[0023] Figure 4The schematic diagram of the valve core structure of the new pneumatic high temperature resistant unloading valve of the utility model. The valve core 2 is welded by a cylindrical arc plate 201, a rib plate 202, a connecting plate 203 and a thick flange 204; the number of rib plates 202, connecting plates 203 and thick flanges 204 constituting the valve core 2 is 2, and all its components are made of heat-resistant stainless steel material 06Cr25Ni20. There is a circular opening on the cylindrical arc plate 201, which realizes the opening and closing function of the unloading valve when it rotates to different positions under the action of the cylinder.

[0024] Figure 5 This is a schematic diagram of the sealing mechanism of the new pneumatic high temperature resistant discharge valve of the utility model. Figure 6 Schematic diagram of the sealing member of the sealing mechanism. The sealing mechanism 3 is composed of an inner cylinder 301, a sealing mechanism connecting plate 302, a guide support screw 303, a sealing member 304 and an outer cylinder 305. The inner cylinder 301, the sealing mechanism connecting plate 302 and the outer cylinder 305 are welded together to form the main body of the sealing mechanism 3; the sealing member 304 is inserted between the inner cylinder 301 and the outer cylinder 305, and has 6 sealing member guide grooves 304a on it, and together with the 6 guide support screws 303 welded on the outer cylinder 305, it forms an up and down moving sealing member; the lower end of the sealing member 304 is in the shape of an intersecting line, which fits the outer surface of the cylindrical arc plate 201. Under the action of its own weight, the sealing member 304 always keeps in contact with the outer surface of the cylindrical arc plate 201, thereby achieving the sealing of the valve. When the intersecting line part of the sealing member 304 is severely worn, it is only necessary to remove the sealing mechanism 3, replace the new sealing member 304 and then reinstall it, which is relatively easy to repair and has low cost.

[0025] Figure 7 This is a schematic diagram of the driving mechanism of the new pneumatic high temperature resistant discharge valve of the utility model. Figure 8 is a schematic diagram of the driving shaft of the driving mechanism, Fig. 9Schematic diagram of the crank of the driving mechanism. The driving mechanism 4 is composed of a bracket 401, a connecting seat 402, a first pin shaft 403, a cylinder 404, a crank 405, an end plate 406, a graphite copper sleeve 407, a transmission shaft 408, a second pin shaft 409 and a cylinder head fork 410. The cylinder 404 is connected to the connecting seat 402 through the first pin shaft 403, and the connecting seat 402 is installed on the bracket 401; the cylinder head fork 410 is connected to the crank 405 through the second pin shaft 409, and the other end of the crank 405 is connected to the transmission shaft 408; the end plate 406 and the spring retaining ring 408b installed at the end of the transmission shaft 408 fix the crank 405 on the transmission shaft 408 along the axial direction; the graphite copper sleeve 407 is installed in the middle of the transmission shaft 408 and matches the graphite copper sleeve. On the cylindrical surface 408c, it is located between the thick flange 204 of the valve core 2 and the crank 405, and its outer surface is in contact with the inner surface of the valve core support sleeve 103; the cross-section of the crank connection end 408a is a square, and its four corners are equal-diameter arc transitions; the other end of the transmission shaft 408 has two thick flange connection keyways 408d, and the transmission shaft 408 and the valve core 2 are connected by a double key; the two ends of the crank 405 are respectively the transmission shaft installation square hole 405a and the cylinder head fork connection circular hole 405b.

[0026] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as quantitative terms indicating or implying relative importance or implicitly indicating the technical features indicated. The terms "left" and "right" indicating positions are described from the perspective of the inventor of the utility model, only for the convenience of expression, rather than emphasizing the necessary position of a certain component. In the present utility model, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0027] The above description is only a typical embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiment, those skilled in the art can still modify the technical solutions recorded in the above typical embodiment or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A novel pneumatic high temperature resistant discharge valve, mainly composed of a valve body (1), a valve core (2), a sealing mechanism (3) and a driving mechanism (4); characterized in that: The valve body (1) is composed of a flange (101), an intermediate cylinder (102), a valve core support sleeve (103), a drive mechanism mounting base (104) and a sealing mechanism mounting platform (105); the valve core (2) is composed of a cylindrical arc plate (201), a rib plate (202), a connecting plate (203) and a thick flange (204); the sealing mechanism (3) is composed of an inner cylinder (301), a sealing mechanism connecting plate (302), a guide support screw (303), a sealing member (304) and an outer cylinder (305); the drive mechanism (4) is composed of a bracket (40 1), a connecting seat (402), a first pin shaft (403), a cylinder (404), a crank (405), an axis end baffle (406), a graphite copper sleeve (407), a transmission shaft (408), a second pin shaft (409) and a cylinder head fork head (410); a valve core (2) and a sealing mechanism (3) are installed inside the valve body (1), a sealing mechanism connecting plate (302) and a sealing mechanism mounting platform (105) are connected, and two sets of driving mechanisms (4) are respectively installed on the driving mechanism mounting bases (104) on the left and right sides of the valve body (1).

2. The novel pneumatic high temperature resistant discharge valve according to claim 1 is characterized in that: The upper and lower flanges (101), the middle cylinder (102), the left and right valve core support sleeves (103), four drive mechanism mounting bases (104) and the sealing mechanism mounting platform (105) constituting the valve body (1) are connected by welding. The sealing mechanism mounting platform (105) is welded inside the middle cylinder (102) near the upper flange (101).

3. The novel pneumatic high temperature resistant discharge valve according to claim 1 is characterized in that: Two thick flanges (204) are respectively welded to the upper surfaces of the rib plates (202) on both sides of the valve core (2) and then welded together with the cylindrical arc plate (201) and two connecting plates (203) to form the valve core (2).

4. The novel pneumatic high temperature resistant discharge valve according to claim 1 is characterized in that: The inner cylinder (301), the sealing mechanism connecting plate (302) and the outer cylinder (305) are welded together to form the main body of the sealing mechanism (3); the sealing member (304) is inserted between the inner cylinder (301) and the outer cylinder (305), and has six sealing member guide grooves (304a) thereon, and together with the six guide support screws (303) welded on the outer cylinder (305), forms a sealing member that moves up and down.

5. The novel pneumatic high temperature resistant discharge valve according to any one of claims 1, 2 or 3, characterized in that: The cylinder (404) is connected to the connecting seat (402) through a first pin shaft (403), and the connecting seat (402) is installed on the bracket (401); the cylinder head fork (410) is connected to the crank (405) through a second pin shaft (409), and the other end of the crank (405) is connected to the transmission shaft (408); the shaft end baffle (406) and the spring retaining ring (408b) installed at the end of the transmission shaft (408) fix the crank (405) on the transmission shaft (408) along the axial direction; the graphite copper sleeve (407) is installed in the middle of the transmission shaft (408) and is connected to the graphite copper sleeve (407). The black copper sleeve fits on the cylindrical surface (408c) and is located between the thick flange (204) of the valve core (2) and the crank (405), and its outer surface contacts the inner surface of the valve core support sleeve (103); the cross section of the crank connection end (408a) is square, and its four corners are equal diameter arc transitions; the other end of the transmission shaft (408) has two thick flange connection keyways (408d), and the transmission shaft (408) and the valve core (2) are connected by a double key; the two ends of the crank (405) are respectively a transmission shaft installation square hole (405a) and a cylinder head fork connection circular hole (405b).

6. The novel pneumatic high temperature resistant discharge valve according to claim 1 or 3 is characterized in that: The cylindrical arc plate (201), the rib plate (202), the connecting plate (203) and the thick flange (204) constituting the valve core (2) are all made of 06Cr25Ni20.

7. The novel pneumatic high temperature resistant discharge valve according to any one of claims 1, 3 or 4, characterized in that: The lower end of the sealing member (304) is in the shape of an intersecting line and fits with the outer surface of the cylindrical arc-shaped plate (201).

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