Material door opening and closing mechanism of rectangular fermentation bed

Abstract

The utility model discloses a material door opening and closing mechanism of a rectangular fermentation bed, which comprises a material door with the upper end correspondingly hinged to the upper part of a material outlet at the lower part of the side wall of the fermentation bed through a hinge; the platform bracket is horizontally connected to the side wall of the fermentation bed and is positioned above each discharge hole; the upper end of the upper connecting rod is hinged below the middle part of the platform bracket; the upper end of the middle connecting rod is hinged with the lower end of the upper connecting rod through a pin shaft; the upper end of the adjusting screw assembly is connected with the lower end of the middle connecting rod; the upper end of the lower connecting rod is connected with the lower end of the adjusting screw rod assembly, and the lower end is hinged to the outer wall of the lower part of the material door; the connecting cross rods are horizontally and fixedly connected to the lower parts of the upper connecting rods, so that the upper connecting rods form a group; the lower end of the execution cylinder is hinged to the connecting cross rod, and the upper end of the execution cylinder is hinged to the upper rack on the side wall of the fermentation bed. According to the mechanism, automatic opening and closing operation without direct contact with the material door by a worker can be realized, the labor intensity is reduced, potential safety hazards to operators are eliminated, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a material door of rectangular fermentation bed especially relates to a material door opening and closing mechanism of rectangular fermentation bed belongs to discharge mechanism technical field. BACKGROUND

[0002] Rectangular fermentation bed is the commonly used equipment of starch fermentation industry, is used for the storage place of fermentation material and carries out fermentation change, the top of each rectangular fermentation bed is equipped with horizontal conveyor and longitudinal walking mechanism. Before cloth, each material door located in the lower part of the side wall of the discharge side of the rectangular fermentation bed needs to be closed to store fermentation material, after each material door is closed, the material is evenly arranged in the rectangular fermentation bed body under the action of cloth machine. After the material passes through the whole fermentation period, each material door needs to be opened, and the material is discharged along the width direction of the rectangular fermentation bed, and the material falls into the ditch and is sent out by the buried belt conveyor.

[0003] According to the production needs of enterprises, the length of rectangular structure fermentation bed can reach dozens or even hundreds of meters, a group of fermentation beds are equipped with dozens of material doors, and the weight of a single material door including thermal insulation materials can reach dozens of kilograms. According to the fermentation period of the material, the whole production line will have hundreds of material doors which need to be opened and closed regularly by manual operation. At present, the manual opening and closing has the following problems in the process of closing and opening:

[0004] 1. The operation needs to hold the handle, in order to realize the reliable closing effect, the action of bolting or pulling out the latch is also needed, so the operation task is dangerous, heavy and inefficient, the opening and closing of hundreds of material doors is a heavy workload, the labor cost is increased and the production efficiency is affected.

[0005] 2. The utility model patent with publication number CN212713550U discloses an anaerobic rectangular fermentation machine, the material door adopts gas spring auxiliary opening and closing type, uses the pneumatic device to assist manpower to open and close the material door, the use of manpower is reduced as a whole, and the gas spring will automatically lift the material door without artificial fixing and locking after the material door is opened to the position. In the ideal case, after the material door is closed to the position, a certain pushing force should be provided to compress the material door. However, in order to overcome the compression force of the gas spring at the beginning of the opening and closing action, more manpower is needed, and due to the installation error, the gas spring alone cannot guarantee the reliability of the compression of the material door, so the handle and the latch fixing device are still retained, resulting in still many manpower investment and many safety hazards.

[0006] 3. Both of the aforementioned existing door opening and closing structures share a common drawback: they require direct manual contact with the door handle to open and close. Because a trench exists outside the door, housing the underground belt conveyor, operators must reach out through the trench, stretch their arms and legs, and reach over the underground belt conveyor to grasp the handles to open and close the door manually or with the assistance of a gas spring. This inadequate operating distance often forces operators to stand on the belt conveyor to operate, posing a significant safety hazard.

[0007] In short, due to the limitations of the existing structural scheme itself, it is impossible to take a comprehensive approach. There is a lack of a solution that can achieve automatic opening and closing, open and close reliably without leaking, reduce manpower participation, improve efficiency, and reduce safety risks during the operation process. Utility Model Content

[0008] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and utility model title of this application, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0009] In view of the above problems and / or the problems existing in the prior art, the present utility model is proposed.

[0010] The purpose of the utility model is to overcome the problems existing in the prior art and provide a material door opening and closing mechanism for a rectangular fermentation bed, which can realize automatic opening and closing operations without direct manual contact with the material door, reduce labor intensity, eliminate potential safety hazards to operators and improve production efficiency.

[0011] In order to solve the above technical problems, the utility model provides a material door opening and closing mechanism for a rectangular fermentation bed, comprising:

[0012] The material door has an upper end hinged to the upper part of the discharge port at the lower part of the fermentation bed side wall;

[0013] The platform support is horizontally connected to the side wall of the fermentation bed and is located above each discharge port;

[0014] an upper connecting rod, the upper end of which is hinged to the lower middle portion of the platform support;

[0015] A middle connecting rod, the upper end of which is hinged to the lower end of the upper connecting rod through a pin;

[0016] an adjusting screw assembly, the upper end of which is connected to the lower end of the middle connecting rod;

[0017] A lower connecting rod, the upper end of which is connected to the lower end of the adjusting screw assembly, and the lower end of which is hinged to the lower outer wall of the material door;

[0018] connecting crossbars horizontally fixed at lower parts of each of the upper connecting rods to make a plurality of upper connecting rods into a group;

[0019] executive cylinders with lower ends hinged to the connecting crossbars and upper ends hinged to upper frames of the side walls of the fermentation beds.

[0020] As an improvement of the present application, the two ends of each of the connecting crossbars are symmetrically hinged to the executive cylinders.

[0021] As a further improvement of the present application, when the executive cylinders reach the limit position of elongation, the material gate is in the closed position, and the upper connecting rod and the middle connecting rod are in the coaxial dead point position.

[0022] As a further improvement of the present application, the lower part of each of the discharge ports is provided with a guide plate with an outer end downwardly inclined.

[0023] As a further improvement of the present application, a manual control valve or an electromagnetic control valve is installed on the compressed air pipeline of the executive cylinder.

[0024] Compared with the prior art, the present application has the following beneficial effects: 1. The automatic opening and closing operation of the material gate without direct contact of the operator is realized, the numerous material gates of the two rectangular fermentation beds in the same group can be automatically opened and closed synchronously, the workload of the operator is greatly reduced, the labor cost is greatly reduced, the time is greatly saved, and the production efficiency is improved;

[0025] 2. After the material gate is closed, the material pressure in the material gate is resisted by the mechanical dead point, and the lock pin does not need to be inserted and pulled out during opening and closing; and the self-locking ensures that the material leakage is avoided, a more reliable closing effect of the material gate is realized, and the product fermentation quality is improved;

[0026] 3. The safety hazards caused by the operator standing on the belt conveyor to operate or seriously tilting the body to operate are avoided; the opening and closing of the material gate can be realized on site or remotely at a fixed point and at a fixed time, and the configuration cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained on the basis of these drawings without creative labor. The drawings are provided for reference and illustration only, and are not intended to limit the present application. Among them:

[0028] Figure 1 is a perspective view of the material gate opening and closing mechanism of the rectangular fermentation bed in an open state;

[0029] Figure 2This is a side view of the material door opening and closing mechanism of the rectangular fermentation bed of the utility model in the open state;

[0030] Figure 3 This is a three-dimensional diagram of the material door opening and closing mechanism of the rectangular fermentation bed of the utility model in the closed state;

[0031] Figure 4 This is a side view of the material door opening and closing mechanism of the rectangular fermentation bed of the present invention in the closed state;

[0032] Figure 5 It is a three-dimensional diagram of the connecting rod mechanism in the utility model;

[0033] In the figure: 1. Rectangular fermentation bed; 2. Material door; 3. Platform bracket; 4. Upper connecting rod; 5. Middle connecting rod; 6. Adjusting screw assembly; 7. Lower connecting rod; 8. Connecting cross bar; 9. Compressed air pipeline; 10. Pneumatic triplex; 11. Cylinder control valve; 12. Actuator cylinder; 13. Material guide plate. DETAILED DESCRIPTION

[0034] In the following description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device must have a specific direction.

[0035] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific figures. Obviously, the embodiments described are only a part of the present invention, not all of the embodiments.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0037] like Figures 1 to 5 As shown, the rectangular fermentation bed 1 is a cuboid, box-shaped structure that can reach tens or even hundreds of meters in length. Typically, two rectangular fermentation beds form a group, with a discharge channel between them. A discharge belt conveyor is installed in the trench of the discharge channel. A platform support 3 is welded between the two rectangular fermentation beds. The platform support 3 is horizontally connected to the fermentation bed sidewalls and located above each discharge port. Multiple discharge ports are located at the lower portion of the sidewall facing the discharge channel. Each discharge port is equipped with a material door 2. The upper end of each material door 2 is hinged to the upper portion of the corresponding discharge port, with the lower portion facing outward to open and inward to close.

[0038] The utility model discloses a rectangular fermentation bed's material door opening and closing mechanism includes upper connecting rod 4, middle connecting rod 5, adjusting screw assembly 6, lower connecting rod 7, connecting cross bar 8 and execution cylinder 12, the upper end of each upper connecting rod 4 is hinged below the middle part of platform support 3 respectively, the lower end of each upper connecting rod 4 is hinged with the upper end of middle connecting rod 5 through pin shaft and can realize relative rotation, the lower end of middle connecting rod 5 is connected with the upper end of lower connecting rod 7 through adjusting screw assembly 6 respectively, realizes telescopic adjustment, avoids the various errors in actual manufacturing installation process to cause mechanism unable to enter mechanical dead point. The lower end of lower connecting rod 7 is hinged in the lower part outer wall of material door 2 respectively.

[0039] In order to reduce the use cost and improve the rigidity of mechanism, the lower part of each upper connecting rod 4 is connected by the horizontally extended connecting cross bar 8 and is integrated, so that the multiple upper connecting rods 4 become a group, and the same group of execution cylinders 12 can be conveniently driven. The two ends of each connecting cross bar 8 are symmetrically hinged with the execution cylinders 12, and the upper ends of the execution cylinders 12 are hinged on the upper rack of the side wall of the fermentation bed, so that the pair of execution cylinders 12 can drive the multiple material doors 2 to simultaneously open or close.

[0040] The compressed air from the compressed air pipeline 9 is processed through the pneumatic triplex 10, flows through the cylinder control valve 11 to facilitate the subsequent semi-automatic control of the flow direction of the air source, and the compressed gas further flows into the execution cylinder 12 through the air pipe to control the telescopic action of the cylinder piston rod.

[0041] When the material door 2 is opened, the execution cylinder 12 controls the contraction of the piston rod under the control of the cylinder control valve 11, the lower end of the cylinder piston rod pulls the connecting cross bar 8 to move upward, the connecting cross bar 8 drives the lower end of each upper connecting rod 4 to swing upward, the upper end of the middle connecting rod 5 moves upward with the upper connecting rod 4, the middle connecting rod 5 and the upper connecting rod 4 are bent into an L shape, and the lower end of the middle connecting rod 5 pulls the material door 2 outward and upward through the adjusting screw assembly 66 and the lower connecting rod 7, so that the material door 2 rotates outward and opens around the hinge at the upper end. When the execution cylinder 12 is contracted to the limit position, the material door 2 is kept in the open state at a certain angle, and the opening angle of the material door 2 can meet the discharge opening requirement. The lower part of each discharge port is provided with a guide plate 13 with an outer end inclined downward, and the material discharged along the width direction of the rectangular fermentation bed falls on the discharge conveyor under the guidance of the guide plate 13 and is sent outward.

[0042] When the material door 2 is closed, the execution cylinder 12 controls the extension of the piston rod under the control of the cylinder control valve 11, the lower end of the cylinder piston rod pushes the connecting cross bar 8 to move downward, the connecting cross bar 8 drives the lower end of each upper connecting rod 4 to swing downward, the upper end of the middle connecting rod 5 moves downward with the upper connecting rod 4, and the lower end of the middle connecting rod 5 pushes the material door 2 inward and downward through the adjusting screw assembly 6 and the lower connecting rod 7, so that the material door 2 rotates inward and closes around the hinge at the upper end.

[0043] When the cylinder 12 is elongated to the limit position, the material door 2 is in the closed position, and the upper connecting rod 4 and the middle connecting rod 5 are in the coaxial mechanical dead point position, which can effectively resist the pushing force of the material in the material door, thereby realizing the reliable door closing effect.

[0044] The cylinder control valve 11 can be a manual control valve, and the operator only needs to switch the manual control valve to smoothly realize the reliable opening and closing action of the multiple material doors 2 without contacting the material door 2. The cylinder control valve 11 can also be an electromagnetic control valve, which is convenient for remote control.

[0045] The above only describes the preferred embodiments of the present application, shows and describes the basic principles, main features and advantages of the present application, and is not limited to the patent protection range of the present application. It should be understood by those skilled in the art that the present application is not limited by the above embodiments. In addition to the above embodiments, other embodiments of the present application can be implemented without departing from the spirit and scope of the present application. The present application will have various changes and improvements, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present application. The scope of protection required by the present application is defined by the appended claims and their equivalents. The technical features not described in the present application can be realized by or using the prior art, which will not be described here.

Claims

1. A rectangular fermentation bed door opening and closing mechanism, characterized in that: include: The material door has an upper end hinged to the upper part of the discharge port at the lower part of the fermentation bed side wall; The platform support is horizontally connected to the side wall of the fermentation bed and is located above each discharge port; an upper connecting rod, the upper end of which is hinged to the lower middle portion of the platform support; A middle connecting rod, the upper end of which is hinged to the lower end of the upper connecting rod through a pin; an adjusting screw assembly, the upper end of which is connected to the lower end of the middle connecting rod; A lower connecting rod, the upper end of which is connected to the lower end of the adjusting screw assembly, and the lower end of which is hinged to the lower outer wall of the material door; A connecting crossbar is horizontally fixedly connected to the lower portion of each upper connecting rod so that the multiple upper connecting rods form a group; The executing cylinder has a lower end hinged on the connecting cross bar and an upper end hinged on the upper frame of the fermentation bed side wall.

2. The rectangular fermentation bed material door opening and closing mechanism according to claim 1, characterized in that: The two ends of each connecting cross bar are symmetrically hinged with the actuating cylinder.

3. The rectangular fermentation bed door opening and closing mechanism according to claim 1, characterized in that: When the actuator cylinder reaches the extreme extension position, the material door is in a closed position, and the upper connecting rod and the middle connecting rod are in a coaxial dead point state.

4. The rectangular fermentation bed door opening and closing mechanism according to claim 1, 2 or 3, characterized in that: The lower part of each discharge port is commonly or separately provided with a material guide plate with an outer end inclined downward.

5. The rectangular fermentation bed door opening and closing mechanism according to claim 1, 2 or 3, characterized in that: A manual control valve or an electromagnetic control valve is installed on the compressed air pipeline of the execution cylinder.

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