Instantaneous opening valve for steam explosion equipment

Abstract

An instant opening valve for steam explosion equipment relates to the technical field of instant opening valve structures and comprises a cylindrical valve body, a valve cover for opening and closing a release port of the valve body is arranged on the outer wall of the valve body in a swinging manner, a plurality of clamping jaws arranged in a swinging manner are arranged on the periphery of the outer wall of the valve body, and a matching inclined surface is arranged between the contact surfaces of the clamping jaws and the valve cover. The problems that in the prior art, a pull explosion air cylinder is limited by the structure, and the sealing problem and the release time requirement are difficult to solve are solved; and in the actual application process, the ball valve is seriously abraded and is difficult to realize large scale, so that the ball valve cannot be applied to large-scale steam explosion equipment.

Description

Technical Field

[0001] The invention relates to the technical field of instant opening valve structures, in particular to an instant opening valve for steam explosion equipment. Background Art

[0002] Steam explosion is a technology that uses the steam ejection principle to realize the explosion process for pretreatment of biomass. Its technical essence is: the steam molecules that penetrate into the plant tissue are released instantly, so that the internal energy of the steam is converted into mechanical energy and acts on the cell layers of the biomass tissue, thereby decomposing the raw materials with less energy. Since it avoids the secondary pollution problem of chemical treatment and solves the problem of low efficiency of biological treatment, it is the most promising pretreatment technology in the field of biomass conversion. The most critical and difficult technology is how to realize the instantaneous release of steam with the instantaneous opening valve on the equipment.

[0003] At present, explosion cylinders and ball valves are the two mainstream release methods in steam explosion equipment.

[0004] As the existing devices are used, the shortcomings of this technology are gradually exposed, mainly in the following aspects: First, although the explosive cylinder can be produced automatically in actual application, it is difficult to solve the sealing problem and the release time requirement due to structural limitations.

[0005] Second, the ball valve is severely worn during actual use, and the replacement cost is expensive. In addition, in order to meet the discharge time requirements, it is difficult to make the ball valve larger than DN200, and it cannot be used in large steam explosion equipment.

[0006] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0007] In view of the defects in the prior art, the present invention solves the problems that the explosion cylinder in the traditional technology is limited by the structure, the sealing problem and the discharge time requirement are difficult to solve; and the ball valve is severely worn in actual application and is difficult to be large-scaled, so that it cannot be used in large steam explosion equipment.

[0008] To solve the above problems, the present invention provides the following technical solutions: The instant opening valve for steam explosion equipment comprises a valve body in a cylindrical shape, a valve cover for opening and closing a release port is swingably arranged on the outer wall of the valve body, a plurality of swingably arranged claws are arranged around the outer wall of the valve body, and a matching inclined surface is arranged between the contact surface of the claw and the valve cover.

[0009] As an optimized solution, an axial radial sealing structure is provided between the inner wall of the valve cover and the release port, and the valve cover is also slidably arranged along the axial direction of the valve body.

[0010] As an optimized solution, a power cylinder which can be extended and retracted along its radial direction is fixedly provided on the outer wall of the valve body, the extension end of the power cylinder abuts against the back side of the claw, a fixed auxiliary opening claw is hinged at the bottom of the power cylinder, the auxiliary opening claw is provided with a lever section which abuts against the swinging tail of the claw, a baffle is also fixedly provided on the extension end of the power cylinder, the auxiliary opening claw is provided with a raised section which abuts against the baffle, and when the extension end of the power cylinder abuts against the back side of the claw, a travel gap is provided between the baffle and the raised section.

[0011] As an optimized solution, an anti-dropout pin hole is provided on the clamping claw, and an anti-dropout pin shaft inserted into the anti-dropout pin hole is provided on the outer wall of the valve body so as to slide along the axial direction of the anti-dropout pin hole.

[0012] As an optimized solution, a fork frame is fixedly connected to the telescopic end of the power cylinder, a fork shaft is fixedly connected to the tail of the anti-disengagement pin shaft, and a bevel hole is opened on the fork frame for driving the fork shaft to disengage the anti-disengagement pin shaft from the anti-disengagement pin hole; when the telescopic end of the power cylinder abuts against the back side of the claw, the anti-disengagement pin shaft is inserted into the anti-disengagement pin hole, and the fork shaft is at the starting position of the bevel hole.

[0013] As an optimized solution, a positioning ear plate is fixedly connected to the outer wall of the valve body, and the positioning ear plate is provided with a sliding hole coaxially arranged with the anti-dropout pin hole, and the anti-dropout pin shaft is slidably supported in the sliding hole.

[0014] As an optimized solution, a mounting frame is fixedly connected to the outer wall of the valve body, a retaining seat is fixedly connected to the outer wall of the mounting frame, a connecting plate is fixedly connected to the anti-drop pin shaft, spring seats are respectively fixedly connected to the opposite end faces of the connecting plate and the retaining seat, and a compression spring is provided between the two opposite spring seats.

[0015] As an optimized solution, the cylinder end of the power cylinder is fixed on the mounting frame, and the auxiliary opening claw is hinged on the mounting frame.

[0016] As an optimized solution, the shaft radial sealing structure includes a radial sealing ring fixed on the end of the release port, and the inner wall of the valve cover is in contact with the plane section of the radial sealing ring.

[0017] As an optimized solution, the axial radial sealing structure further includes an axial sealing ring fixed on the inner wall of the valve cover, and the axial inner wall of the release port is in abutment with the outer ring of the axial sealing ring.

[0018] As an optimized solution, a hinge seat is fixedly provided on the outer wall of the valve body, a hinge frame is fixedly connected to the outer wall of the valve cover, a long hinge hole is opened on the hinge frame, and the hinge frame is hinged to the hinge shaft of the hinge seat through the long hinge hole.

[0019] As an optimized solution, rotation dampers connected to the articulated frame are fixedly provided on the opposite outer walls of the articulated seat.

[0020] As an optimized solution, an auxiliary opening and closing telescopic cylinder that can be extended and retracted along its axial direction is fixed on the outer wall of the valve body, the telescopic end of the auxiliary opening and closing telescopic cylinder is fixedly connected with an anti-detachment hook, and the swinging tail of the articulated frame is fixedly connected with an anti-detachment shaft that cooperates with the anti-detachment hook.

[0021] As an optimized solution, a damping lever is hinged on the outer wall of the valve body, a driving protrusion that drives the damping lever to swing is fixedly connected to the swinging tail of the hinged frame, a damper is obliquely fixedly connected to the outer wall of the valve body, and the telescopic end of the damper is against the swinging end of the damping lever.

[0022] As an optimized solution, a support frame is fixedly connected to the outer wall of the valve body, the auxiliary opening and closing telescopic cylinder and the damper are fixed on the support frame, and the damping lever is hinged on the support frame.

[0023] As an optimized solution, a valve cover opening and closing stroke detection device is provided on the mounting frame.

[0024] As an optimized solution, a cylinder stroke detection device is provided on the mounting frame.

[0025] As an optimized solution, the axial sealing ring is fixed to the inner wall of the valve cover by fasteners.

[0026] As an optimized solution, a ring groove for clamping the radial sealing ring is provided at the end of the release port.

[0027] As an optimized solution, the power cylinder is an oil cylinder.

[0028] As an optimized solution, a flange is provided on the port of the valve body away from the valve cover.

[0029] Compared with the prior art, the present invention has the following beneficial effects: The upper surface of the outer periphery of the valve cover and the contact surface of the claw are provided with matching matching bevels. The matching bevels are used to help tighten the valve cover by using the clamping force of the claws when closing the cover, and secondly, when opening the cover, the pressure in the valve body is large and the valve cover has a huge outward pressure, so the matching bevels are more conducive to the instant opening of the claws. A seal is provided between the valve body and the valve cover. The radial sealing ring is used to seal the radial surface of the valve cover and the valve body, and the axial sealing ring is used to seal the axial surface of the valve cover and the valve body. The radial sealing ring is clamped in the ring groove, and the axial sealing ring is fixed to the inner wall of the valve cover by fasteners, which is convenient for disassembly and replacement. The valve cover is hinged to the valve body through a long hinge hole, which can realize the valve cover swinging and sliding at the same time, and can ensure that the valve cover enters the valve body vertically when closing the cover, so as to avoid the axial sealing ring and the radial sealing ring being bitten by the release opening; By setting the damping lever and damper, the energy impact caused by the rapid opening of the valve cover can be offset to prevent damage to the hinged part; The tail of the valve cover is equipped with an auxiliary opening and closing telescopic cylinder, and the telescopic end is equipped with an anti-drop hook, which is clamped with the anti-drop shaft to prevent the valve cover from rebounding after it is quickly opened; The device is provided with an auxiliary opening structure. By providing a baffle, when the oil cylinder retracts, the baffle pushes the raised section of the auxiliary opening claw, and the lever section begins to approach and squeeze the swing tail of the claw, so that the claw can be forced to open; The purpose of setting the anti-dropout pin hole on the claw and the anti-dropout pin shaft on the outside of the valve body is to realize unmanned automated production, so that the structure can be automated; the second is for safety, to prevent the claw from being automatically flushed open due to failure of the oil cylinder; This structure realizes automated production, instantaneous discharge, and good sealing performance, while also greatly improving service life. It is also convenient and low-cost for subsequent maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0031] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the positions of the oil cylinder stroke detection device and the valve cover opening and closing stroke detection device of the present invention; Figure 3 This is a schematic diagram of the structure of the auxiliary opening claw of the present invention; Figure 4 It is a structural schematic diagram of the anti-dropout pin shaft of the present invention; Figure 5 It is a structural schematic diagram of the shift fork frame of the present invention.

[0032] In the figure: 1-valve body; 2-valve cover; 3-release port; 4-claw; 5-radial sealing ring; 6-axial sealing ring; 7-fastener; 8-long hinge hole; 9-damping lever; 10-support frame; 11-damper; 12-articulated frame; 13-anti-drop hook; 14-anti-drop shaft; 15-driving protrusion; 16-articulated shaft; 17-cylinder stroke detection device; 18-valve cover opening and closing stroke detection device; 19-power cylinder; 20-mounting frame; 21-blocking plate; 22-auxiliary opening claw; 23-fork frame; 24-anti-drop pin shaft; 25-fork shaft; 26-bevel hole; 27-positioning ear plate; 28-anti-drop pin hole; 29-auxiliary opening and closing telescopic cylinder; 30-matching bevel; 31-connecting plate; 32-spring seat; 33-retaining seat; 34-rotation damper. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0034] like Figures 1 to 5 As shown, the instant opening valve for steam explosion equipment comprises a valve body 1 arranged in a cylindrical shape, a valve cover 2 for opening and closing a release port 3 thereof is swingably provided on the outer wall of the valve body 1, a plurality of swingably arranged claws 4 are arranged around the outer wall of the valve body 1, and a matching inclined surface 30 is provided between the contact surface of the claw 4 and the valve cover 2.

[0035] An axial radial sealing structure is provided between the inner wall of the valve cover 2 and the release port 3 , and the valve cover 2 is also slidably arranged along the axial direction of the valve body 1 .

[0036] A power cylinder 19 which can be extended and retracted in the radial direction is fixedly provided on the outer wall of the valve body 1, and the telescopic end of the power cylinder 19 abuts against the back of the claw 4. A fixed auxiliary opening claw 22 is hinged at the bottom of the power cylinder 19, and the auxiliary opening claw 22 is provided with a lever section which abuts against the swinging tail of the claw 4. A baffle 21 is also fixedly provided on the telescopic end of the power cylinder 19, and the auxiliary opening claw 22 is provided with a raised section which abuts against the baffle 21. When the telescopic end of the power cylinder 19 abuts against the back of the claw 4, a travel gap is provided between the baffle 21 and the raised section.

[0037] An anti-dropout pin hole 28 is formed on the claw 4 , and an anti-dropout pin shaft 24 is provided on the outer wall of the valve body 1 so as to slide along the axial direction of the anti-dropout pin hole 28 and to be inserted into the anti-dropout pin hole 28 .

[0038] A fork frame 23 is fixedly connected to the telescopic end of the power cylinder 19, and a fork shaft 25 is fixedly connected to the tail of the anti-dropout pin shaft 24. The fork frame 23 is provided with an inclined hole 26 for driving the fork shaft 25 to disengage the anti-dropout pin shaft 24 from the anti-dropout pin hole 28; when the telescopic end of the power cylinder 19 abuts against the back side of the claw 4, the anti-dropout pin shaft 24 is inserted into the anti-dropout pin hole 28, and the fork shaft 25 is at the starting position of the inclined hole 26.

[0039] There are two shift fork frames 23 fixedly connected in parallel from top to bottom, and the upper and lower surfaces of the anti-drop pin shaft 24 are provided with guide planes, which are in friction contact with the opposite surfaces of the two shift fork frames 23 respectively.

[0040] The blocking piece 21 is fixed to the lower surface of the fork frame 23 .

[0041] A positioning ear plate 27 is fixedly connected to the outer wall of the valve body 1. The positioning ear plate 27 is provided with a sliding hole coaxially arranged with the anti-dropout pin hole 28. The anti-dropout pin shaft 24 is slidably supported in the sliding hole.

[0042] A mounting frame 20 is fixedly connected to the outer wall of the valve body 1, a retaining seat 33 is fixedly connected to the outer wall of the mounting frame 20, a connecting plate 31 is fixedly connected to the anti-drop pin shaft 24, spring seats 32 are fixedly connected to the opposite end surfaces of the connecting plate 31 and the retaining seat 33, and a compression spring is provided between the two opposite spring seats 32.

[0043] The cylinder end of the power cylinder 19 is fixed on the mounting frame 20 , and the auxiliary opening claw 22 is hinged on the mounting frame 20 .

[0044] The shaft radial sealing structure comprises a radial sealing ring 5 fixed on the end of the release port 3 , and the inner wall of the valve cover 2 is in contact with the plane section of the radial sealing ring 5 .

[0045] The axial radial sealing structure further includes an axial sealing ring 6 fixed on the inner wall of the valve cover 2 , and the axial inner wall of the release port 3 is in contact with the outer ring of the axial sealing ring 6 .

[0046] A hinge seat is fixedly provided on the outer wall of the valve body 1, and a hinge frame 12 is fixedly connected to the outer wall of the valve cover 2. The hinge frame 12 is provided with a long hinge hole 8 and is hinged to the hinge shaft 16 of the hinge seat through the long hinge hole 8.

[0047] Rotation dampers 34 connected to the articulated frame 12 are also fixedly disposed on the opposite outer walls of the articulated seat.

[0048] An auxiliary opening and closing telescopic cylinder 29 is fixed to the outer wall of the valve body 1 and is telescopically extended along its axial direction. The telescopic end of the auxiliary opening and closing telescopic cylinder 29 is fixedly connected to an anti-detachment hook 13. The swing tail of the articulated frame 12 is fixedly connected to an anti-detachment shaft 14 that cooperates with the anti-detachment hook 13.

[0049] A damping lever 9 is hinged on the outer wall of the valve body 1, and a driving protrusion 15 for driving the damping lever 9 to swing is fixed to the swing tail of the hinge frame 12. A damper 11 is fixedly connected to the outer wall of the valve body 1 at an angle, and the telescopic end of the damper 11 is against the swing end of the damping lever 9.

[0050] A support frame 10 is fixedly connected to the outer wall of the valve body 1 , the auxiliary opening and closing telescopic cylinder 29 and the damper 11 are fixed to the support frame 10 , and the damping lever 9 is hinged to the support frame 10 .

[0051] A valve cover opening and closing stroke detection device 18 is provided on the mounting frame 20 .

[0052] The mounting frame 20 is provided with a cylinder stroke detection device 17 .

[0053] The axial sealing ring 6 is fixed to the inner wall of the valve cover 2 by means of a fastener 7 .

[0054] An annular groove for clamping a radial sealing ring 5 is provided at the end of the release port 3 .

[0055] The power cylinder 19 is an oil cylinder.

[0056] The end of the valve body 1 away from the valve cover 2 is provided with a flange.

[0057] The structures of the valve cover opening and closing stroke detection device 18 and the cylinder stroke detection device 17 are common in daily life. Since they are not the innovation of this solution, they will not be described in detail here.

[0058] The working principle of this device is: The instant opening valve is connected to the main device. At this time, the valve cover 2 is in the open state and the closing action begins. First, the auxiliary opening and closing telescopic cylinder 29 is extended, and the anti-dropout hook 13 and the anti-dropout shaft 14 are used to push the valve cover 2 to close. When the valve cover opening and closing stroke detection device 18 detects that the valve cover 2 is closed to a certain extent, the power cylinder 19 is extended, and the telescopic end is against the back of the claw 4, and the claw 4 begins to close. The claw 4 uses the matching inclined surface 30 to press the valve cover 2 into the valve body 1 and press it tightly; at the same time, the anti-dropout pin shaft 24 is inserted into the anti-dropout pin hole 28. When the cylinder stroke detection device 17 detects the position arrival signal, the cylinder stops extending and starts to maintain the current position, and the closing action ends; The main equipment starts to charge and heat up. When the main equipment completes all production processes and is ready to open the valve to realize steam explosion, the power cylinder 19 starts to retract, and the anti-drop pin 24 is also pulled out. Under the internal pressure of the valve body 1, the valve cover 2 is subjected to an upward thrust. Due to the matching inclined surface 30, the claw 4 is pushed back. If the claw 4 does not retreat, the lever section starts to squeeze the swing tail of the claw 4, and the claw 4 can be forced to open. After the claw 4 retreats to a certain extent, the valve cover 2 is instantly pushed open by the strong pressure because there is no external force to restrain it, and the main body is opened. The internal gas is released instantaneously, realizing instantaneous explosion. The valve cover 2 is pushed open instantaneously at an extremely fast speed, forming a strong impact force. At this time, the rotary damper 34 works to weaken part of the impact. When the valve cover 2 is opened to a certain angle, the driving protrusion 15 presses the damping lever 9, and transmits the impact force to the damper 11. The impact force is absorbed by the damper 11. Because the valve cover 2 pops open instantaneously, the valve cover 2 may rebound even if the damper 11 absorbs the impact force. At this time, the anti-dropout hook 13 will hook the anti-dropout shaft 14 on the valve cover 2 to prevent the valve cover 2 from rebounding.

[0059] Finally, it should be noted that 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 they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. Instantaneous opening valve for steam explosion equipment, characterized by: The invention comprises a valve body (1) arranged in a cylindrical shape, a valve cover (2) swingably arranged on the outer wall of the valve body (1) for opening and closing a release port (3) thereof, a plurality of swingably arranged clamping claws (4) arranged around the outer wall of the valve body (1), and a matching inclined surface (30) being arranged between the contact surface of the clamping claw (4) and the valve cover (2).

2. The instant opening valve for steam explosion equipment according to claim 1, characterized in that: An axial radial sealing structure is provided between the inner wall of the valve cover (2) and the release port (3), and the valve cover (2) is slidably arranged along the axial direction of the valve body (1).

3. The instant opening valve for steam explosion equipment according to claim 1, characterized in that: A power cylinder (19) is fixedly provided on the outer wall of the valve body (1) and is telescopic in the radial direction thereof, the telescopic end of the power cylinder (19) abuts against the back side of the clamping claw (4), an auxiliary opening claw (22) with a fixed position is hingedly connected below the power cylinder (19), the auxiliary opening claw (22) is provided with a lever section abutting against the swinging tail of the clamping claw (4), a baffle (21) is also fixedly provided on the telescopic end of the power cylinder (19), the auxiliary opening claw (22) is provided with a raised section abutting against the baffle (21), and when the telescopic end of the power cylinder (19) abuts against the back side of the clamping claw (4), a travel gap is provided between the baffle (21) and the raised section.

4. The instant opening valve for steam explosion equipment according to claim 3, characterized in that: The claw (4) is provided with an anti-dropout pin hole (28), and an anti-dropout pin shaft (24) is provided on the outer wall of the valve body (1) so as to slide along the axial direction of the anti-dropout pin hole (28) and is inserted into the anti-dropout pin hole (28).

5. The instant opening valve for steam explosion equipment according to claim 4, characterized in that: A shift fork frame (23) is fixedly connected to the telescopic end of the power cylinder (19), a shift fork shaft (25) is fixedly connected to the tail of the anti-dropout pin shaft (24), and a bevel hole (26) is provided on the shift fork frame (23) for driving the shift fork shaft (25) to disengage the anti-dropout pin shaft (24) from the anti-dropout pin hole (28); when the telescopic end of the power cylinder (19) abuts against the back surface of the claw (4), the anti-dropout pin shaft (24) is inserted into the anti-dropout pin hole (28), and the shift fork shaft (25) is at the starting position of the bevel hole (26).

6. The instant opening valve for steam explosion equipment according to claim 2, characterized in that: The shaft radial sealing structure comprises a radial sealing ring (5) fixed on the end of the release port (3), and the inner wall of the valve cover (2) is in contact with the plane section of the radial sealing ring (5).

7. The instant opening valve for steam explosion equipment according to claim 2, characterized in that: The radial shaft sealing structure comprises an axial sealing ring (6) fixed on the inner wall of the valve cover (2), and the axial inner wall of the release port (3) is in contact with the outer ring of the axial sealing ring (6).

8. The instant opening valve for steam explosion equipment according to claim 1, characterized in that: A hinge seat is fixedly provided on the outer wall of the valve body (1), a hinge frame (12) is fixedly connected to the outer wall of the valve cover (2), a long hinge hole (8) is provided on the hinge frame (12), and the hinge frame (12) is hinged to the hinge shaft (16) of the hinge seat through the long hinge hole (8).

9. The instant opening valve for steam explosion equipment according to claim 8, characterized in that: An auxiliary opening and closing telescopic cylinder (29) that is telescopically extendable along the axial direction of the valve body (1) is fixedly connected to the outer wall of the valve body (1); an anti-slip hook (13) is fixedly connected to the telescopic end of the auxiliary opening and closing telescopic cylinder (29); and an anti-slip shaft (14) that cooperates with the anti-slip hook (13) is fixedly connected to the swing tail of the hinged frame (12).

10. The instant opening valve for steam explosion equipment according to claim 8, characterized in that: A damping lever (9) is hingedly connected to the outer wall of the valve body (1); a driving protrusion (15) for driving the damping lever (9) to swing is fixedly connected to the swing tail of the hinge frame (12); a damper (11) is fixedly connected to the outer wall of the valve body (1) in an inclined manner; and a telescopic end of the damper (11) abuts against a swing end of the damping lever (9).

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