Feed valve of furfural hydrolysis kettle

Abstract

The utility model discloses a feed valve of a furfural hydrolysis kettle, and relates to the relevant technical field of furfural hydrolysis. The valve cover covers the valve body, a connecting block is fixed to the periphery of the valve body, an installation column is fixed to the end, away from the valve body, of the connecting block, the hydraulic oil cylinder is fixed into the installation column, a hydraulic rod is connected into the hydraulic oil cylinder in a telescopic mode, and the top of the hydraulic rod extends out of the hydraulic oil cylinder and is fixedly provided with an end. A support arm is fixed on the periphery of the end head; two annular plates are fixed to the bottom end of the valve deck, and a sealing gasket is fixed to the portion, between the two annular plates, of the bottom face of the valve deck. An annular edge is fixed to the upper end of the valve body, and a sealing rubber ring is fixed to the upper end face of the annular edge in an embedded mode. By arranging the valve body, the valve cover, the hydraulic oil cylinder, the hydraulic rod, the supporting arm, the annular plate, the sealing rubber ring and the sealing gasket, the problems that a ball valve port is prone to being blocked, coked and leaked, a gasket of the ball valve is prone to being damaged, and replacement cost is high are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of furfural hydrolysis, and in particular relates to a feed valve for a furfural hydrolysis reactor. Background Technology

[0002] Furfural is an industrial chemical that can be extracted from various agricultural byproducts, including corn cobs, oat and wheat bran, and sawdust. A necessary hydrolysis step is required in furfural processing, and hydrolysis reactors are commonly used for this purpose. During hydrolysis, the reactor is equipped with a corresponding feed valve to introduce the furfural raw material. Conventional feed valves are ball valves, but while they are commonly used, they still have the following drawbacks in practical application:

[0003] Conventional ball valve designs, due to their spherical valve core design, are prone to clogging during long-term use because the furfural raw material contains a lot of debris. During long-term hydrolysis, coking and gas leakage are likely to occur at the ball valve at the opening of the hydrolysis vessel (boiler). Therefore, ball valves have low applicability and require frequent maintenance, leading to increased maintenance costs.

[0004] Secondly, once the ball valve at the boiler nozzle develops coking and leakage, the entire set of sealing gaskets needs to be replaced, which is costly. The sealing performance of the ball valve also needs to be improved, and the service life of the gaskets needs to be extended as much as possible. Utility Model Content

[0005] The purpose of this utility model is to provide a feed valve for a furfural hydrolysis reactor. By setting up a valve body, valve cover, hydraulic cylinder, hydraulic rod, support arm, ring plate, sealing ring, and sealing gasket, it solves the problems of easy blockage, coking, and air leakage at the ball valve port, easy damage to the ball valve gasket, and high replacement cost.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a feed valve for a furfural hydrolysis reactor, including a valve body, a valve cover and a hydraulic cylinder. The valve cover is provided on the top of the valve body. A connecting block is fixed on the outer periphery of the valve body, and a mounting column is fixed on the end of the connecting block away from the valve body. A hydraulic cylinder is fixed inside the mounting column. A hydraulic rod is telescopically connected inside the hydraulic cylinder. The top of the hydraulic rod extends out of the hydraulic cylinder and is fixed with an end. A support arm is fixed on the outer periphery of the end.

[0008] A central column is fixed at the upper center of the valve cover, and a base block is fixed at the upper end of the central column. A stud is fixed at the upper end of the base block, and the end of the support arm away from the end is sleeved on the stud.

[0009] The bottom end of the valve cover is fixed with two ring plates, and the bottom surface of the valve cover between the two ring plates is fixed with a sealing gasket; the upper end of the valve body is fixed with a ring edge, and the upper end surface of the ring edge is fixed with a sealing rubber ring in an embedded mode.

[0010] Further, the bottom outer periphery of the valve body is fixed with a valve seat, and the valve body and the valve seat are through-penetrated, the valve body, the valve seat, the connecting block, the mounting column and the ring edge are integrally casted.

[0011] Further, the cross section of the sealing rubber ring is a convex structure, the convex part of the sealing rubber ring exceeds the upper end of the ring edge, the upper end of the convex part of the sealing rubber ring contacts the bottom surface of the sealing gasket, and the size of the convex part of the sealing rubber ring plus the size of the sealing gasket is equal to the size of the gap between the two ring plates.

[0012] Further, the ring edge on the inner side of the sealing rubber ring is provided with plug holes in a ring array, and the bottom surface of the valve cover is further fixed with plug columns in a ring array, the plug columns are inserted into the plug holes, and the plug columns are located in the cavities of the ring plates close to the inner side.

[0013] Further, the upper end of the ring plate on the outer side of the sealing rubber ring is embedded and fixed with a pressure sensor.

[0014] Further, the inner wall of the hydraulic oil cylinder is fixed with a steel ball, the outer wall of the hydraulic rod is provided with two center-symmetrical spiral grooves, the spiral grooves are quarter-turn spirals, and the outer wall of the hydraulic rod at the higher end of the spiral grooves is further provided with a vertical groove.

[0015] Further, when the valve cover and the valve body are closed, the steel ball is located at the top end of the vertical groove, when the valve cover is opened, the valve cover is at 90° with the valve body, and the steel ball is located at the lower end position of the spiral groove.

[0016] Further, the outer screw of the support arm is screwed with a nut, the side edge of the hydraulic oil cylinder is further fixed with an oil pipe, one end of the oil pipe away from the hydraulic oil cylinder penetrates the mounting column and extends out; the outer periphery of the center column is fixed with reinforcing ribs in a ring array, and the bottom of the reinforcing ribs is fixed to the top surface of the valve cover.

[0017] The utility model has the following beneficial effects:

[0018] The utility model discloses a valve body, bonnet, hydraulic oil cylinder, hydraulic rod, support arm are set up, solved the problem that ball valve mouth is easy to produce the phenomenon of blockage and coking and gas leakage, change the conventional ball valve form structure, become hydraulic flat gland structure, it does not influence furfural raw material's input again, and will not produce the phenomenon of blocking the valve core, greatly reduces the maintenance cost, saves the cost, and the service life can be greatly strengthened, the valve body and valve seat are installed on the hydrolysis kettle, make hydraulic oil cylinder work again, drive hydraulic rod to drop and make support arm take bonnet and press on the valve body upper end, close the valve body, remove the conventional ball valve valve core structure, will not produce the blockage, also will not produce the coking, and the sealing property of hydraulic gland is better, has enough pressure and keeps sealing, is not easy to gas leakage, when opening bonnet, hydraulic rod rises and rotates 90, makes bonnet rise and moves 90, opens the valve body completely, and the feeding is convenient.

[0019] The utility model discloses a bonnet, ring plate, sealing rubber ring, sealing gasket are set up, solved the problem that the gasket of ball valve is easy to be damaged, and the problem of high replacement cost, when using bonnet to close valve body, set up two ring plates on the bottom of bonnet, set up sealing gasket between two ring plates, and the ring edge on valve body is inlayed sealing rubber ring, when bonnet closes the upper of valve body, the upper convex part of sealing rubber ring just is in two ring plates and contacts sealing gasket, when two ring plate bottom end contacts the lower part of sealing rubber ring, is tight, just seals, and the sealing structure of this form is more stable, and ring plate still has certain heat insulation function, when effectively guaranteeing the sealing, still prolongs the service life, saves replacement cost. ACCURACY OF DRAWINGS

[0020] In order to make the technical scheme of the embodiments of the utility model more clearly, the following will briefly introduce the drawing needed to be used for the embodiment description.

[0021] Figure 1 It is a kind of stereogram of the feed valve of furfural hydrolysis kettle;

[0022] Figure 2 It is the state diagram of valve cover and valve body when valve cover is opened;

[0023] Figure 3 It is Figure 2 The structure enlarged view of place A in Fig.

[0024] Figure 4 It is the connection diagram of valve cover and valve body after sectioning;

[0025] Figure 5 It is the structure enlarged view of place B in Fig. Figure 4

[0026] Figure 6 It is the bottom view of valve cover;

[0027] Figure 7 It is the section view of hydraulic oil cylinder when bonnet closes valve body;​

[0028] Figure 8 for Figure 7 Enlarged view of the structure at point C in the image;

[0029] Figure 9 This is a cross-sectional view of the hydraulic cylinder when the valve cover is open.

[0030] Figure 10 for Figure 9 Enlarged view of the structure at point D in the image.

[0031] Figure label:

[0032] 1. Valve body; 101. Valve seat; 102. Connecting block; 103. Mounting post; 1031. Oil pipe; 104. Ring edge; 1041. Sealing ring; 1042. Insertion hole; 1043. Pressure sensor; 2. Valve cover; 201. Center post; 202. Reinforcing rib; 203. Stud; 204. Nut; 205. Base block; 206. Ring plate; 207. Insertion post; 208. Sealing gasket; 3. Hydraulic cylinder; 301. Hydraulic rod; 3011. Spiral groove; 3012. Vertical groove; 302. End; 303. Support arm; 304. Steel ball. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0034] Please see Figures 1-10 As shown, this utility model is a feed valve for a furfural hydrolysis reactor, including a valve body 1, a valve cover 2 and a hydraulic cylinder 3. The valve cover 2 is provided on the top of the valve body 1. A connecting block 102 is fixed on the outer periphery of the valve body 1, and a mounting column 103 is fixed on the end of the connecting block 102 away from the valve body 1. A hydraulic cylinder 3 is fixed inside the mounting column 103. A hydraulic rod 301 is telescopically connected inside the hydraulic cylinder 3, and the top of the hydraulic rod 301 extends out of the hydraulic cylinder 3 and is fixed with an end 302. A support arm 303 is fixed on the outer periphery of the end 302.

[0035] The valve body 1 serves as the main feeding channel, and a valve cover 2 is installed on top of it for sealing. A connecting block 102 is installed on the outside of the valve body 1 to connect to the mounting column 103. The hydraulic cylinder 3 is then installed on the mounting column 103. When the hydraulic cylinder 3 is working, it drives the hydraulic rod 301 to rise and fall, thereby causing the support arm 303 to rise and fall and rotate, which in turn drives the valve cover 2 to rise and fall, thus realizing opening and closing.

[0036] A central column 201 is fixed at the upper center of the valve cover 2, and a base block 205 is fixed at the upper end of the central column 201. A stud 203 is fixed at the upper end of the base block 205. The end of the support arm 303 away from the end 302 is sleeved on the stud 203. A nut 204 is screwed onto the stud 203 above the support arm 303.

[0037] A central column 201 is set on the valve cover 2, and then a base block 205 and a stud 203 are installed. A support arm 303 is fitted over the stud 203 and a nut 204 is screwed on to fix the support arm 303.

[0038] Two ring plates 206 are fixed at the bottom of the valve cover 2, and a sealing gasket 208 is fixed on the bottom surface of the valve cover 2 between the two ring plates 206; a ring edge 104 is fixed at the upper end of the valve body 1, and a sealing ring 1041 is embedded and fixed on the upper end surface of the ring edge 104.

[0039] The two ring plates 206 have different inner diameters, and a sealing gasket 208 is provided on the inner side for sealing. It works in conjunction with the sealing ring 1041 on the ring edge 104 to seal. The sealing ring 1041 and the sealing gasket 208 are in contact and are located in the area between the two ring plates 206, which further increases the sealing performance.

[0040] A valve seat 101 is fixed to the bottom outer periphery of the valve body 1, and the valve body 1 and the valve seat 101 are internally connected. The valve body 1, valve seat 101, connecting block 102, mounting column 103, and ring edge 104 are integrally cast. The integral casting of the valve body 1, connecting block 102, and mounting column 103 helps to ensure the support strength of the hydraulic cylinder 3 and avoids the problem of support breakage due to insufficient support strength during use.

[0041] The sealing ring 1041 has a convex-shaped cross section, and the convex part of the sealing ring 1041 extends beyond the upper end of the ring edge 104. The upper end of the convex part of the sealing ring 1041 contacts the bottom surface of the sealing gasket 208, and the size of the convex part of the sealing ring 1041 plus the size of the sealing gasket 208 is equal to the size of the gap between the two ring plates 206.

[0042] When the valve cover 2 closes the valve body 1, the upper protrusion of the sealing ring 1041 is exactly inside the two ring plates 206 and contacts the sealing gasket 208. At this time, the bottom of the two ring plates 206 contacts the lower part of the sealing ring 1041, which fits perfectly and seals the seal. This type of sealing structure is more stable, and the ring plates 206 also have a certain heat insulation function. While effectively ensuring the seal, it also extends the service life.

[0043] The sealing ring 1041 has a ring-shaped array of insertion holes 1042 on the inner edge 104. The bottom surface of the valve cover 2 is also fixed with a ring-shaped array of insertion posts 207, which are inserted into the insertion holes 1042 and are located in the inner cavity of the ring plate 206 near the inner side.

[0044] When the steel ball 304 is at the higher end of the spiral groove 3011, the insertion post 207 is just above the insertion hole 1042. At this time, the hydraulic cylinder 3 works, causing the hydraulic rod 301 to continue to descend. The steel ball 304 moves along the vertical groove 3012, and the vertical groove 3012 descends. At this time, the insertion post 207 is inserted into the insertion hole 1042, further increasing the stability of the connection.

[0045] A pressure sensor 1043 is embedded and fixed at the upper end of the ring plate 206 outside the sealing ring 1041. When the valve cover 2 is pressed on the valve body 1, the pressure sensor 1043 will stop the hydraulic cylinder 3 from working when it senses sufficient pressure to ensure sufficient sealing.

[0046] Steel balls 304 are fixed on the inner wall of the hydraulic cylinder 3. Two centrally symmetrical spiral grooves 3011 are opened on the outer wall of the hydraulic rod 301. The spiral grooves 3011 are quarter turns of spiral, and a vertical groove 3012 is also opened on the outer wall of the hydraulic rod 301 at the higher end of the spiral grooves 3011. The design of the spiral grooves 3011 allows the hydraulic rod 301 to rotate 90° while rising, so that the valve cover 2 will not block the top of the valve body 1.

[0047] When the valve cover 2 and valve body 1 are closed, the steel ball 304 is at the top of the vertical groove 3012. When the valve cover 2 is open, it is at 90° to the valve body 1, and the steel ball 304 is at the lower end of the spiral groove 3011.

[0048] A hydraulic pipe 1031 is also fixed through the side of the hydraulic cylinder 3, and the end of the hydraulic pipe 1031 away from the hydraulic cylinder 3 passes through the mounting post 103 and extends out.

[0049] The outer periphery of the central column 201 is fixed with reinforcing ribs 202 arranged in a ring array, and the bottom of the reinforcing ribs 202 is fixed to the top surface of the valve cover 2;

[0050] The oil pipe 1031 is used as a passage for conveying and outputting hydraulic oil. The specific hydraulic oil flow direction is a conventional structure, so it is not shown in the figure. The valve cover 2 is equipped with a central column 201 and reinforcing ribs 202 for structural reinforcement, presenting a pyramid shape.

[0051] The specific working principle of this utility model is as follows: First, the valve body 1 and valve seat 101 are installed on the hydrolysis kettle. Furfural raw material is added into the hydrolysis kettle from the valve body 1. During this process, the valve cover 2 is in the open state, and the steel ball 304 is at the lower end of the spiral groove 3011. Then, the valve cover 2 is closed, the hydraulic cylinder 3 works, and the hydraulic rod 301 rotates and descends along the spiral groove 3011 until the steel ball 304 is at the higher end of the spiral groove 3011. At this time, the insertion post 207 is just above the insertion hole 1042. At this time, the hydraulic cylinder 3 works, causing the hydraulic rod 301 to continue to descend. As the valve cover 2 descends, the steel ball 304 moves along the vertical groove 3012, causing the vertical groove 3012 to descend. At this time, the insert pin 207 is inserted into the insertion hole 1042. Simultaneously, the upper protrusion of the sealing ring 1041 is positioned within the two ring plates 206 and contacts the sealing gasket 208. At this time, the bottom ends of the two ring plates 206 contact the lower part of the sealing ring 1041, forming a tight seal. When the valve cover 2 is opened, the hydraulic cylinder 3 controls the hydraulic rod 301 to descend. The hydraulic rod 301 rises along the spiral groove 3011 and the vertical groove 3012 until it reaches 90° and opens the valve cover 2, completing the opening process.

[0052] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A feed valve for a furfural hydrolysis reactor, comprising a valve body (1), a valve cover (2), and a hydraulic cylinder (3), characterized in that: A valve cover (2) is provided on the top of the valve body (1). A connecting block (102) is fixed on the outer periphery of the valve body (1). A mounting post (103) is fixed on the end of the connecting block (102) away from the valve body (1). A hydraulic cylinder (3) is fixed inside the mounting post (103). A hydraulic rod (301) is telescopically connected inside the hydraulic cylinder (3). The top of the hydraulic rod (301) extends out of the hydraulic cylinder (3) and is fixed with an end (302). A support arm (303) is fixed on the outer periphery of the end (302). A central column (201) is fixed at the upper center of the valve cover (2), and a base block (205) is fixed at the upper end of the central column (201). A stud (203) is fixed at the upper end of the base block (205), and the end of the support arm (303) away from the end (302) is sleeved on the stud (203). The bottom end of the valve cover (2) is fixed with two ring plates (206), and the bottom surface of the valve cover (2) between the two ring plates (206) is fixed with a sealing gasket (208); the upper end of the valve body (1) is fixed with a ring edge (104), and the upper end surface of the ring edge (104) is embedded with a sealing rubber ring (1041).

2. The feed valve of the furfural hydrolysis reactor according to claim 1, characterized in that: The valve body (1) is fixed with a valve seat (101) on the bottom outer periphery, and the valve body (1) and the valve seat (101) are connected. The valve body (1), valve seat (101), connecting block (102), mounting column (103), and ring edge (104) are integrally cast.

3. The feed valve of the furfural hydrolysis reactor according to claim 1, characterized in that: The sealing ring (1041) has a convex-shaped cross section, and the convex part of the sealing ring (1041) extends beyond the upper end of the ring edge (104). The upper end of the convex part of the sealing ring (1041) contacts the bottom surface of the sealing gasket (208), and the size of the convex part of the sealing ring (1041) plus the size of the sealing gasket (208) is equal to the size of the gap between the two ring plates (206).

4. The feed valve of the furfural hydrolysis reactor according to claim 1, characterized in that: The sealing ring (1041) has a ring-shaped array of insertion holes (1042) on its inner edge (104). The bottom surface of the valve cover (2) is also fixed with a ring-shaped array of insertion posts (207), and the insertion posts (207) are inserted into the insertion holes (1042). The insertion posts (207) are located in the inner cavity of the ring plate (206) near the inner side.

5. The feed valve of the furfural hydrolysis reactor according to claim 1, characterized in that: A pressure sensor (1043) is embedded and fixed at the upper end of the ring plate (206) outside the sealing ring (1041).

6. The feed valve of the furfural hydrolysis reactor according to claim 1, characterized in that: Steel balls (304) are fixed on the inner wall of the hydraulic cylinder (3), and two centrally symmetrical spiral grooves (3011) are opened on the outer wall of the hydraulic rod (301). The spiral grooves (3011) are quarter turns of spiral, and a vertical groove (3012) is also opened on the outer wall of the hydraulic rod (301) at the higher end of the spiral grooves (3011).

7. The feed valve of the furfural hydrolysis reactor according to claim 6, characterized in that: When the valve cover (2) and valve body (1) are closed, the steel ball (304) is at the top of the vertical groove (3012). When the valve cover (2) is open, it is at 90° with the valve body (1), and the steel ball (304) is at the lower end of the spiral groove (3011).

8. The feed valve of the furfural hydrolysis reactor according to claim 1, characterized in that: A nut (204) is screwed onto the stud (203) above the support arm (303). An oil pipe (1031) is also fixed through the side of the hydraulic cylinder (3), and the end of the oil pipe (1031) away from the hydraulic cylinder (3) passes through the mounting post (103) and extends out. A reinforcing rib (202) is fixed on the outer periphery of the central post (201) in a ring array, and the bottom of the reinforcing rib (202) is fixed to the top surface of the valve cover (2).

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