Multifunctional discharging control valve device for stock bin

Abstract

The utility model relates to a multifunctional discharge control valve device for a stock bin, which comprises a first sleeve arranged at a discharge port of the stock bin, a second sleeve is concentrically arranged at the bottom of the first sleeve, a sealing steel ring is assembled at the top end in the first sleeve, and a seat plate is assembled at the top end in the second sleeve; an air cylinder is assembled in the middle of the base plate, the air cylinder is arranged in the second sleeve, a piston rod of the air cylinder extends into the first sleeve from the interior of the second sleeve and is connected with a conical valve head arranged in the first sleeve, and the tip end of the conical valve head extends into the stock bin. By arranging the conical valve head, the sealing steel ring and the air cylinder, materials near the discharging opening in the stock bin can be crushed through the conical valve head, so that material blocking is prevented, noise is low, compatibility is good, and the flow speed of the materials during discharging can be controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of discharge valves, in particular to a multifunctional discharge control valve device for a silo. Background Art

[0002] The discharge of materials inside the silo is basically controlled by valves, such as flap valves, butterfly valves or star-shaped rotary valves, whose main function is to open or close the discharge port of the silo. When the valve is opened, the discharge is achieved based on the fluidity of the material itself. If you encounter materials with poor fluidity or easy to agglomerate (especially materials that agglomerate after being damp), the discharge method based on the above valves is likely to cause the material to be blocked at the discharge port.

[0003] In the prior art, a vibrator is usually added to the side wall of the silo to prevent the silo discharge port from being blocked, so as to cooperate with the discharge valve to discharge the material smoothly. However, this discharge method has the following disadvantages:

[0004] (1) The noise generated by the vibrator when working is very loud, which greatly affects the environment of the production site. In particular, there are usually more than one discharge bin at the production site, and there are at least a few and at most a dozen in a workshop. When all the vibrators in the workshop are working and vibrating, not only a huge amount of compressed air and electricity are consumed, but also huge noise pollution is caused, which seriously affects the occupational health of operators;

[0005] (2) Vibrator-assisted discharging can only be used for materials with good fluidity. For materials that are easily affected by moisture and agglomerate, or materials with poor fluidity (which are sticky in themselves), adding a vibrator to the silo still causes blockage problems. The dredging effect is poor, and it is impossible to actively and effectively intervene in the blockage.

[0006] (3) The conventional discharge valve cannot control the flow rate of the material during discharge, that is, the discharge valve has only two states: fully closed and fully open. The discharge flow rate of the material can be controlled at 0 or 100%, and the material flow rate cannot be accurately controlled. Utility Model Content

[0007] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a multifunctional discharge control valve device for a silo. By setting a conical valve head, a sealing steel ring and a cylinder, the conical valve head can be used to crush the material near the discharge port inside the silo, thereby preventing blockage, having low noise, good compatibility, and being able to control the flow rate of the material during discharge.

[0008] The technical solution adopted by the utility model is as follows:

[0009] A multifunctional discharge control valve device for a silo comprises a first sleeve installed at a silo discharge port, a second sleeve is concentrically installed at the bottom of the first sleeve, a sealing steel ring is installed at the top end of the first sleeve, and a seat plate is installed at the top end of the second sleeve;

[0010] A cylinder is installed in the middle of the seat plate, and the cylinder is arranged inside the second sleeve. The piston rod of the cylinder extends from the inside of the second sleeve into the inside of the first sleeve, and is connected to the conical valve head arranged inside the first sleeve. The tip of the conical valve head extends into the interior of the silo.

[0011] When the cylinder extends, it drives the outer wall of the conical valve head to press against the inner wall of the sealing steel ring, thereby preventing leakage of materials inside the silo; when the cylinder retracts, it drives the conical valve head to leave the inner wall of the sealing steel ring, thereby forming a material drop passage between the outer wall of the conical valve head and the inner wall of the sealing steel ring, and the material drop passage is used for discharging materials inside the silo.

[0012] As a further improvement of the above technical solution:

[0013] The conical valve head is conical.

[0014] The sealing steel ring is annular, and an inclined surface arranged along the circumference is provided below the inner wall surface of the sealing steel ring, and the inclined surface corresponds to the outer wall surface of the conical valve head.

[0015] The first sleeve and the second sleeve are both cylindrical and hollow inside, and the first sleeve and the second sleeve are assembled with each other via a flange.

[0016] The seat plate is in the shape of a disk, a through hole for avoiding the cylinder piston rod is opened in the middle of the end surface of the seat plate, and a plurality of hollows for materials to pass through are also opened on the end surface of the seat plate.

[0017] The hollows are symmetrically arranged along the via holes, and a single hollow is an arc-shaped hole.

[0018] An outlet flange is provided at the material outlet of the silo, and the material outlet of the silo is assembled with the first sleeve through the outlet flange.

[0019] The silo is supported by a plurality of supporting legs, and a weighing sensor is installed between a single supporting leg and the silo, and the weight of the material in the silo is measured by the weighing sensor.

[0020] It also includes a control system, which includes a controller. The controller is electrically connected to a plurality of weighing sensors respectively, and the controller is also electrically connected to a solenoid valve.

[0021] The solenoid valve is installed on the air supply passage of the cylinder.

[0022] The beneficial effects of the utility model are as follows:

[0023] The utility model has a compact and reasonable structure and is easy to operate. By arranging a conical valve head, a sealing steel ring and a cylinder, it can effectively prevent the problem of material blockage during discharging. The cylinder makes little noise when working, reducing noise pollution at the production site. At the same time, by arranging a control system, the flow rate of the material during discharging can be accurately controlled based on PWM technology.

[0024] The utility model also has the following advantages:

[0025] (1) The control valve device of the utility model has good compatibility and is applicable to materials with good flowability, poor flowability, and easy agglomeration, and has a good discharge effect.

[0026] (2) In the utility model, a conical valve head is provided, so that for materials with poor fluidity, the valve head can timely impact the materials to crush them, thereby preventing material blockage; for materials with good fluidity, the inclined side wall surface can guide the materials.

[0027] (3) The utility model has a compact structure and low manufacturing cost, and the cylinder used can be interchangeable with the cylinder used in the traditional butterfly valve without adding additional costs.

[0028] (4) In the utility model, flange connections are adopted between the first sleeve and the second sleeve, and between the first sleeve and the silo, which are convenient for disassembly and assembly; in addition, threaded connectors are adopted between the cylinder and the seat plate, and between the piston rod of the cylinder and the conical valve head, so that conical valve heads of different tapers can be quickly replaced for different types of materials, thereby ensuring smooth discharge and high flexibility of use.

[0029] (5) The control system in the utility model is based on PWM technology and can control the ratio of the opening time and the closing time of the control valve device within a set time (such as within 1 second), thereby accurately controlling the flow rate of the material when it is discharged.

[0030] (6) The utility model is provided with a weighing controller, so as to accurately know whether a material blockage occurs during the discharging process, thereby controlling the movement of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the utility model.

[0032] Figure 2 for Figure 1 A partial enlarged view of .

[0033] Figure 3 It is a structural schematic diagram of the seat plate in the utility model.

[0034] Figure 4 It is a schematic diagram of the arrangement of the weighing sensor on the silo in the utility model.

[0035] Figure 5 It is the principle diagram of the control system in the utility model.

[0036] Among them: 1. first sleeve; 2. second sleeve; 3. silo; 301. feed port; 4. support leg; 5. cylinder; 6. seat plate; 601. hollow; 602. through hole; 7. outlet flange; 8. sealing steel ring; 801. inclined surface; 9. conical valve head; 10. solenoid valve; 11. first regulating valve; 12. second regulating valve; 13. weighing sensor; 14. controller. DETAILED DESCRIPTION

[0037] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0038] The structure and functions of the utility model are as follows:

[0039] like Figure 1-Figure 5 As shown, a multifunctional discharge control valve device for a silo comprises a first sleeve 1 installed at the discharge port of a silo 3, a second sleeve 2 is concentrically installed at the bottom of the first sleeve 1, a sealing steel ring 8 is installed at the top of the interior of the first sleeve 1, and a seat plate 6 is installed at the top of the interior of the second sleeve 2; a cylinder 5 is installed in the middle of the seat plate 6, and the cylinder 5 is arranged inside the second sleeve 2. The piston rod of the cylinder 5 extends from the inside of the second sleeve 2 into the inside of the first sleeve 1, and is arranged in the first sleeve 2. The conical valve head 9 inside the cylinder 1 is connected, and the tip of the conical valve head 9 extends into the interior of the silo 3; when the cylinder 5 extends, the outer wall of the conical valve head 9 is driven to press against the inner wall of the sealing steel ring 8, thereby preventing the leakage of materials inside the silo 3; when the cylinder 5 retracts, the conical valve head 9 is driven to leave the inner wall of the sealing steel ring 8, thereby forming a material drop passage between the outer wall of the conical valve head 9 and the inner wall of the sealing steel ring 8, and the material drop passage is used for discharging materials inside the silo 3. The utility model can effectively prevent the leakage of materials in the silo 3 when the control valve device is closed by arranging the conical valve head 9, the sealing steel ring 8 and the cylinder 5; and can form an annular material drop passage between the conical valve head 9 and the sealing steel ring 8 when the control valve device is opened, thereby discharging materials in the silo 3.

[0040] The conical valve head 9 is conical, and its tip extends into the interior of the silo 3. For materials with poor fluidity, it can hit the materials in time to crush them, thereby preventing blockage; for materials with good fluidity, its inclined side wall surface can guide the materials.

[0041] The sealing steel ring 8 is annular, and a circumferentially arranged inclined surface 801 is provided below the inner wall surface of the sealing steel ring 8, and the inclined surface 801 corresponds to the outer wall surface of the conical valve head 9. The sealing steel ring 8 is used to seal with the conical valve head 9, so as to seal the discharge port of the silo 3 when the control valve device is closed;

[0042] In the utility model, the sealing steel ring 8 is manufactured by a precision turning process, and has high manufacturing precision and small tolerance, and can cooperate with the conical valve head 9 to play a good sealing role; in addition, the sealing steel ring 8 is fixed to the top of the first sleeve 1 by welding or setting a threaded connection method, and is connected with the discharge port of the silo 3;

[0043] The inclined surface 802 is arranged below the inner wall surface of the sealing steel ring 8, and its inclination angle corresponds to the inclination angle of the side wall surface of the conical valve head 9. When the inclined surface 802 is in contact with the outer wall surface of the conical valve head 9, the control valve device is closed;

[0044] When the outer wall surface of the conical valve head 9 is not in contact with the inclined surface 802, an annular blanking passage is formed between the conical valve head 9 and the sealing steel ring 8, and the control valve device is opened.

[0045] An outlet flange 7 is provided at the outlet of the silo 3, and the outlet of the silo 3 is assembled with the first sleeve 1 through the outlet flange 7. The outlet of the silo 3 is a circular through hole, and the first sleeve 1, the second sleeve 2 and the outlet of the silo 3 are arranged concentrically; in addition, a feed port 301 is provided at the top of the silo 3.

[0046] The first sleeve 1 and the second sleeve 2 are both cylindrical and hollow inside, and are assembled with flanges. The first sleeve 1 and the second sleeve 2 are both made of thick-walled seamless steel pipes. The top of the outer wall of the first sleeve 1 is provided with a first upper flange, and the bottom of the outer wall is provided with a first lower flange; the top of the outer wall of the second sleeve 2 is provided with a second upper flange, and the bottom of the outer wall is provided with a second lower flange;

[0047] The first upper flange is used to cooperate with the outlet flange 7, so as to fix the first sleeve 1 to the bottom of the silo 3;

[0048] The first lower flange is used to cooperate with the second upper flange, so as to fix the second sleeve 2 to the bottom of the first sleeve 1;

[0049] In the utility model, each flange is precision machined to improve the flatness of each flange, thereby preventing the material from leaking from the gaps of each interface.

[0050] The seat plate 6 is in the shape of a disk, and a through hole 602 is provided in the middle of the end surface of the seat plate 6 for avoiding the piston rod of the cylinder 5. The end surface of the seat plate 6 is also provided with several hollows 601 for the passage of materials. Several threaded holes are also provided on the end surface of the seat plate 6 around the through hole 602, and the threaded holes are used to fix the cylinder 5;

[0051] The output end of the cylinder 5 (i.e., its piston rod) extends from the interior of the second sleeve 2 into the interior of the first sleeve 1 through the through hole 602 and is fixed to the bottom surface of the conical valve body 9;

[0052] The hollows 601 are symmetrically arranged along the through holes 602, and a single hollow 601 is an arc-shaped hole. The hollows 601 are used to allow materials to pass through.

[0053] The silo 3 is supported by a plurality of supporting legs 4, and a weighing sensor 13 is installed between a single supporting leg 4 and the silo 3, and the weight of the material in the silo 3 is measured by the weighing sensor 13. In the present utility model, three weighing sensors 13 are arranged evenly spaced along the outer circumference of the silo 3, and the interval angle between two adjacent weighing sensors 123 is 120°.

[0054] like Figure 5 As shown, a control system is also included. The control system includes a controller 14 . The controller 14 is electrically connected to the multiple weighing sensors 13 , and the controller 14 is also electrically connected to the solenoid valve 10 . Figure 5 The weighing sensor module in corresponds to the three weighing sensors 13 in the utility model;

[0055] The controller 14 weighs the material inside the silo 3 in real time through the weighing sensor 13, and controls the solenoid valve 10 to be energized or de-energized based on the PWM signal according to the discharge requirements, thereby controlling the cylinder 5 to extend and retract a corresponding number of times within a certain interval, thereby controlling the material flow rate;

[0056] In the utility model, the cylinder 5 adopts a short-stroke cylinder (its stroke range is 25mm-50mm), and the time from fully extended to fully retracted and from fully retracted to fully extended is short, which can usually be controlled within the range of 0.1 seconds to 0.2 seconds; therefore, based on PWM control technology, usually within one second, the cylinder 5 can perform 5-10 telescopic actions, so that the control system can control the material discharge speed based on the control valve device of the utility model.

[0057] like Figure 5 As shown, the solenoid valve 10 is installed on the air supply passage of the cylinder 5; in the utility model, the external air source provides compressed air to the cylinder 5 through the solenoid valve 10; the external air source is connected to the air inlet and exhaust port group of the solenoid valve 10 respectively through the connecting pipe group; Figure 5 In the figure, the arrow indicates the intake direction of compressed air;

[0058] The A port of the solenoid valve 10 is connected to the air inlet of the cylinder head of the cylinder 5 through the first air pipe, and the first air pipe is equipped with a first regulating valve 11; the B port of the solenoid valve 10 is connected to the air inlet of the cylinder head of the cylinder 5 through the second air pipe, and the second air pipe is equipped with a second regulating valve 12; the first regulating valve 11 and the second regulating valve 12 both adopt one-way pressure reducing valves, which are used to reduce the air pressure input to the solenoid valve 10 and prevent the air flow in the corresponding air pipe from flowing back.

[0059] The working process of the utility model is as follows:

[0060] When the solenoid valve 10 is powered off, the air inlet of the solenoid valve 10 is connected to the port B of the solenoid valve 10, and the compressed air is passed from the air inlet of the cylinder head into the cylinder 5 through the second air pipe, so that the cylinder 5 extends, and then the outer wall surface of the conical valve 9 is close to the inclined surface 802, so as to close the control valve device;

[0061] When the solenoid valve 10 is energized, the air inlet of the solenoid valve 10 is connected to the A port of the solenoid valve 10, and the compressed air is passed from the air inlet of the cylinder head into the cylinder 5 through the first air pipe, so that the cylinder 5 retracts, and then the outer wall of the conical valve 9 leaves the inclined surface 802 to open the control valve device, and the material inside the silo 3 enters the storage container through the discharge port, the first sleeve 1, the hollow 602, and the second sleeve 2 in sequence;

[0062] The weight of the material inside the silo 3 is monitored in real time by the weighing sensor 3 during the material discharging process, so as to determine whether the material outlet of the silo 3 is blocked;

[0063] During the material discharging process, when the weight parameter monitored in real time by the weighing sensor 3 remains almost unchanged within a certain time range, it is determined that material blocking occurs at this time, and the controller 14 controls the solenoid valve 10 to be energized and de-energized, so that the piston rod of the cylinder 5 is retracted and extended, thereby driving the conical valve head 9 to perform a linear downward and upward motion in the vertical direction to impact the material near the discharge port inside the crushing silo 3, thereby ensuring smooth discharge of the silo 3;

[0064] During the material discharging process, when the weight parameter monitored in real time by the weighing sensor 3 decreases at a certain rate, it is determined that there is no material blockage at this time, and the solenoid valve 10 remains energized, thereby keeping the control valve device open.

[0065] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A multifunctional discharge control valve device for a silo, characterized in that: It comprises a first sleeve (1) installed at the discharge port of a silo (3), a second sleeve (2) being installed concentrically at the bottom of the first sleeve (1), a sealing steel ring (8) being installed at the top end of the interior of the first sleeve (1), and a seat plate (6) being installed at the top end of the interior of the second sleeve (2); A cylinder (5) is mounted in the middle of the seat plate (6). The cylinder (5) is arranged inside the second sleeve (2). The piston rod of the cylinder (5) extends from the inside of the second sleeve (2) into the inside of the first sleeve (1) and is connected to a conical valve head (9) arranged inside the first sleeve (1). The tip of the conical valve head (9) extends into the inside of the silo (3). When the cylinder (5) is extended, the outer wall surface of the conical valve head (9) is driven to press against the inner wall surface of the sealing steel ring (8), thereby preventing leakage of materials inside the silo (3); when the cylinder (5) is retracted, the conical valve head (9) is driven to leave the inner wall surface of the sealing steel ring (8), thereby forming a material discharge passage between the outer wall surface of the conical valve head (9) and the inner wall surface of the sealing steel ring (8), and the material discharge passage is used for discharging materials inside the silo (3).

2. A multifunctional discharge control valve device for a silo as claimed in claim 1, characterized in that: The conical valve head (9) is conical.

3. A multifunctional discharge control valve device for a silo as claimed in claim 2, characterized in that: The sealing steel ring (8) is annular, and an inclined surface (801) arranged along the circumference is provided below the inner wall surface of the sealing steel ring (8), and the inclined surface (801) corresponds to the outer wall surface of the conical valve head (9).

4. A multifunctional discharge control valve device for a silo as claimed in claim 1, characterized in that: The first sleeve (1) and the second sleeve (2) are both cylindrical and hollow inside, and the first sleeve (1) and the second sleeve (2) are assembled via a flange.

5. A multifunctional discharge control valve device for a silo as claimed in claim 1, characterized in that: The seat plate (6) is in the shape of a disk, and a through hole (602) for avoiding the piston rod of the cylinder (5) is provided in the middle of the end surface of the seat plate (6). The end surface of the seat plate (6) is also provided with a plurality of hollows (601) for the passage of materials.

6. A multifunctional discharge control valve device for a silo as claimed in claim 5, characterized in that: The hollows (601) are symmetrically arranged along the via holes (602), and a single hollow (601) is an arc-shaped hole.

7. A multifunctional discharge control valve device for a silo as claimed in claim 1, characterized in that: An outlet flange (7) is provided at the outlet of the silo (3), and the outlet of the silo (3) is assembled with the first sleeve (1) via the outlet flange (7).

8. A multifunctional discharge control valve device for a silo as claimed in claim 1, characterized in that: The silo (3) is supported by a plurality of supporting legs (4), and a weighing sensor (13) is installed between a single supporting leg (4) and the silo (3), and the weight of the material in the silo (3) is measured by the weighing sensor (13).

9. A multifunctional discharge control valve device for a silo as claimed in claim 8, characterized in that: It also includes a control system, which includes a controller (14). The controller (14) is electrically connected to a plurality of weighing sensors (13) respectively, and the controller (14) is also electrically connected to the solenoid valve (10).

10. A multifunctional discharge control valve device for a silo as claimed in claim 9, characterized in that: The solenoid valve (10) is installed on the air supply passage of the cylinder (5).

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