Compound pressing detection device and high square flat screen

Abstract

The application provides a composite pressing detection device and a high square flat screen, which comprises two composite pressing assemblies, the two composite pressing assemblies are respectively used for being fixed on the top wall of one of the screen boxes and the two sides in the transverse direction, each composite pressing assembly has two vertically downward pressing output ends, each pressing output end is used for penetrating into the screen box and pressing one corner of the screen top grid in the downward direction, and each pressing output end is provided with a pressure sensor correspondingly; wherein, a controller is arranged in each composite pressing assembly, the controller is electrically connected with the pressure sensor to obtain a pressure detection value, and the corresponding pressing output end is controlled to adjust the output pressure when the pressure detection value exceeds a threshold value. The composite pressing detection device and the high square flat screen provided by the application can ensure the pressing reliability of the screen grid, avoid the material leakage caused by the loosening of the screen grid, and improve the screen grid dismounting and replacing efficiency and ensure the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of high square screen, and particularly relates to a composite pressing detection device and high square flat screen. BACKGROUND

[0002] The high square flat screen is a device for material screening through self-balancing driving to form a flat pendulum rotary motion. The screen grids arranged in layers in the screen box need to be reliably pressed by a pressing mechanism to ensure that the screen grids are tightly attached to each other and avoid material leakage.

[0003] At present, the pressing form of the screen grid of the high square flat screen mainly adopts two screw rods to press the two sides of the top grid from the top wall of the screen box downward. The pressing force is transmitted downward through each screen grid to achieve the pressing effect on the entire screen stack. The disadvantage of this method is that the screen body is installed high in a four-corner suspension position, and the pressing screw rod extends upward at the top of the screen body. Therefore, when the screen grid needs to be disassembled, repaired or replaced, the operator must climb onto the screen top to perform high-altitude operation, which is not only inconvenient to operate and affects work efficiency, but also has safety hazards. In addition, since the screen grid is prone to looseness during the movement of the screen body, the operator needs to frequently inspect to ensure the reliable pressing of the screen grid. If the inspection is not timely, the screen grid may leak due to insufficient pressing, which leads to the need to re-screen the material, thereby affecting the production efficiency. SUMMARY

[0004] The embodiment of the present application provides a composite pressing detection device and high square flat screen, which aims to solve the problem that the screen grid cannot be timely discovered after loosening to cause material leakage, and improve the disassembly and replacement efficiency of the screen grid.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows: In a first aspect, a composite pressing detection device is provided, which includes two composite pressing assemblies. The two composite pressing assemblies are respectively used for being fixed on the top wall of one of the screen boxes on the two sides in the transverse direction. Each composite pressing assembly has two downward pressing output ends. Each pressing output end is used for penetrating into the screen box and pressing one corner of the top grid downward. Each pressing output end is provided with a pressure sensor corresponding thereto. Each composite pressing assembly is provided with a controller. The controller is electrically connected with the pressure sensor to obtain a pressure detection value. When the pressure detection value exceeds a threshold value, the controller controls the corresponding pressing output end to adjust the output pressure.

[0006] In a possible implementation manner of the first aspect, the composite pressing assembly includes:

[0007] An outer shell is fixedly connected with the top wall of the screen box.

[0008] Two pressing rods are respectively connected to the shell in the vertical direction and are longitudinally spaced, and one end of the pressing rod penetrates the screen box vertically downward and forms a pressing output end;

[0009] Two transmission mechanisms are respectively arranged in the shell, and the power output ends of the two transmission mechanisms are respectively connected with one of the pressing rods;

[0010] Two driving members are arranged in the shell and are respectively electrically connected with the controller, and the output ends of the two driving members are respectively connected with the power input ends of the two transmission mechanisms.

[0011] In some embodiments, the transmission mechanism comprises:

[0012] A driving wheel is rotationally connected to the shell and sleeved with the pressing rod, and the driving wheel is threadedly matched with the pressing rod;

[0013] A transmission rod is rotationally connected to the shell and is in transmission connection with the driving wheel, and one end of the transmission rod is connected with the output end of the driving member.

[0014] For example, the driving wheel is a worm gear, the transmission rod is a worm, the worm is in meshing transmission with the worm gear, and one end of the pressing rod penetrates the shell upward to form a first operation end.

[0015] In a possible implementation, the composite pressing assembly further comprises a manual operation member connected with the transmission rods of the two transmission mechanisms respectively, and the manual operation member comprises:

[0016] A first sleeve is rotationally connected to the shell and extends horizontally along the axial direction of the transmission rod, a first gear is sleeved on the first sleeve, the first gear is in meshing transmission with a second gear sleeved on one of the transmission rods, and one end of the first sleeve penetrates the shell to form a second operation end;

[0017] A second sleeve is rotationally connected to the shell and is coaxial with the first sleeve, a third gear is sleeved on the second sleeve, and the third gear is in meshing transmission with a fourth gear sleeved on the other transmission rod;

[0018] An operation rod is connected with the second sleeve at one end and penetrates the first sleeve at the other end to form a third operation end.

[0019] In some embodiments, the first sleeve is in sliding connection with the shell along the axial direction, and the first sleeve has a first transmission connection state in which the first sleeve is slid to be in meshing transmission with the first gear and the second gear, and has a first transmission interruption state in which the first sleeve is slid to be separated from the first gear and the second gear.

[0020] For example, one end of the first sleeve extending into the shell is provided with a first stop table, a first elastic member is sleeved on the first sleeve, one end of the first elastic member is in abutment with the first stop table, and the other end of the first elastic member is connected with the shell, and the first sleeve is kept in the first transmission interruption state under the thrusting action of the first elastic member.

[0021] In some embodiments, the second sleeve has a polygonal hole section, and one end of the operating rod is slidably arranged in the second sleeve and has a polygonal column; the operating rod has a second transmission connection state in which the polygonal column is inserted into the polygonal hole section, and has a second transmission interruption state in which the polygonal column is separated from the polygonal hole section.

[0022] For example, the operating rod has a second stop platform at a position between the first sleeve and the second sleeve, and a second elastic member is arranged on the operating rod, one end of the second elastic member abuts against the second stop platform, and the other end of the second elastic member is connected to the housing; the operating rod is kept in the second transmission interruption state by the pushing action of the second elastic member.

[0023] The composite pressing detection device has the following advantages: compared with the prior art, the two pressing output ends of the two composite pressing assemblies press down on two corner positions of one side edge of the screen top grid, so that the pressing force can be applied to each corner position of the four screen top grids, thereby improving the pressing reliability of the screen grid and the sealing performance of the adjacent screen grids, and avoiding material leakage; each pressure sensor can detect the pressing force of each pressing output end on the corner position of the screen top grid in real time, and when the pressure detection value of the pressure sensor exceeds a threshold value, the controller can control the composite pressing assembly to perform a corresponding pressure compensation action to automatically adjust the output pressure of the corresponding pressing output end, thereby ensuring the pressing reliability of the screen grid, avoiding the problem of material leakage caused by the failure to find the loosening of the screen grid due to the untimely inspection of the staff, and automatically releasing or pressing the screen top grid by the controller when the screen grid needs to be disassembled and replaced, without manual operation on the upper side of the screen body, thereby avoiding the safety hazards of high-altitude operation, improving the efficiency of disassembly and replacement of the screen grid, and further improving the production efficiency.

[0024] In a second aspect, the embodiment of the present application further provides a high square flat screen including the composite pressing detection device.

[0025] The high square flat screen has the following advantages: compared with the prior art, since the composite pressing detection device is arranged on the top of the screen box, the pressing reliability of the screen grid can be ensured, the problem of material leakage caused by the failure to find the loosening of the screen grid due to the untimely inspection of the staff can be avoided, and the screen top grid can be automatically released or pressed by the controller when the screen grid needs to be disassembled and replaced, without manual operation on the upper side of the screen body, thereby avoiding the safety hazards of high-altitude operation, improving the efficiency of disassembly and replacement of the screen grid, and further improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1This is a three-dimensional structural diagram of the high-square flat screen provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the installation structure of the composite compression detection device in the sieve box provided in an embodiment of the present invention;

[0028] Figure 3 This is a three-dimensional structural schematic diagram of the composite pressing detection device provided in an embodiment of the present invention;

[0029] Figure 4 For along Figure 3 Schematic diagram of the cross-sectional structure along line AA;

[0030] Figure 5 For along Figure 4 Schematic diagram of the cross-sectional structure of the middle BB line;

[0031] Figure 6 This is a schematic diagram of the disassembled structure of the operating lever and the second sleeve used in an embodiment of the present invention.

[0032] In the diagram: 10. Composite clamping assembly; 11. Housing; 12. Pressing rod; 121. First operating end; 13. Transmission mechanism; 131. Drive wheel; 132. Transmission rod; 1321. Second gear; 1322. Fourth gear; 14. Driving component; 15. Manual operating component; 151. First sleeve; 1511. First gear; 1512. Second operating end; 1513. First stop; 1514. First elastic element; 152. Second sleeve; 1521. Third gear; 1522. Polygonal hole segment; 153. Operating rod; 1531. Third operating end; 1532. Polygonal column; 1533. Second stop; 1534. Second elastic element; 20. Pressure sensor; 30. Controller; 40. Screen box; 50. Screen top grid; 60. Alarm device. Detailed Implementation

[0033] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0034] It should be noted that when an element is referred to as being "set on", "connected" to another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or several features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0035] Please refer to Figures 1 to 5 The composite pressing detection device provided by the present application will be described. The composite pressing detection device comprises two composite pressing assemblies 10, and the two composite pressing assemblies 10 are respectively arranged on the top wall of each of the two screen boxes 40. Each composite pressing assembly 10 has two vertically downward pressing output ends, each of which is arranged to penetrate into the screen box 40 and press downward on one corner of the screen top grid 50. Each pressing output end is provided with a pressure sensor 20. Each composite pressing assembly 10 is provided with a controller 30, which is electrically connected to the pressure sensor 20 to obtain a pressure detection value, and controls the corresponding pressing output end to adjust the output pressure when the pressure detection value exceeds a threshold value.

[0036] It should be noted that the middle of the screen body of the high square flat screen is usually a driving mechanism, and two rows of screen boxes 40 are symmetrically arranged on both sides of the driving mechanism. In the present embodiment, the top of each screen box 40 is provided with a composite pressing detection device, so that the screen grid stacked in each screen box 40 can be automatically pressed and the automatic adjustment of the pressing force can be realized.

[0037] It should be understood that each controller 30 in the present embodiment controls the action of two pressing output ends, and each pressing output end can act independently and does not affect each other. Therefore, it can be ensured that the pressing force of each pressing output end on the corresponding corner position of the screen top grid 50 is always within the threshold range, thereby ensuring the reliability of the screen pressing.

[0038] Compared with the prior art, the two pressing output ends of the two composite pressing assemblies 10 press downward on two corner edges of one side edge of the screen top grid 50, so that the pressing force can be obtained at each corner edge position of the four screen top grids 50, thereby improving the pressing reliability of the screen grid and the stacking sealing property between adjacent screen grids, and avoiding material leakage; the pressing force of each pressing output end on the corner edge position of the screen top grid 50 can be detected in real time by each pressure sensor 20, and when the pressure detection value of the pressure sensor 20 exceeds the threshold value, the controller 30 can control the composite pressing assembly 10 to perform corresponding pressure compensation action, and automatically adjust the output pressure of the corresponding pressing output end, so as to not only ensure the pressing reliability of the screen grid, avoid the problem of material leakage caused by the staff failing to find the loosening of the screen grid due to untimely inspection, but also automatically release or press the screen top grid 50 by the controller 30 controlling the composite pressing assembly 10 when the screen grid needs to be disassembled and replaced, without manual operation by climbing to the top of the screen body, thereby avoiding the safety hazard of high-altitude operation, improving the disassembly and replacement efficiency of the screen grid, and further improving the production efficiency.

[0039] In some embodiments, referring to Figure 3 and Figure 4 , the composite pressing assembly 10 comprises a shell 11, two pressing rods 12, two transmission mechanisms 13, and two driving members 14; the shell 11 is fixedly connected to the top wall of the screen box 40; the two pressing rods 12 are respectively slidably connected in the vertical direction in the shell 11 and are spaced apart in the longitudinal direction, and one end of the pressing rod 12 penetrates the screen box 40 vertically downward and forms a pressing output end; the two transmission mechanisms 13 are arranged in the shell 11, and the power output ends of the two transmission mechanisms 13 are respectively connected to one of the pressing rods 12; the two driving members 14 are arranged in the shell 11 and are respectively electrically connected to the controller 30, and the output ends of the two driving members 14 are respectively connected to the power input ends of the two transmission mechanisms 13.

[0040] Specifically, the driving member 14 can be a telescopic driving member 14 or a rotary driving member 14; the transmission mechanism 13 can be a connecting rod used in cooperation with the telescopic driving member 14, the connecting rod is driven to swing by the telescopic driving member 14, and then the pressing rod 12 is driven to move up and down by the swing of the connecting rod, or the telescopic driving member 14 directly drives the pressing rod 12 to move up and down; the transmission mechanism 13 can also be a gear and rack structure used in cooperation with the rotary driving member 14, the gear is driven to rotate by the rotary driving member 14, and then the rack fixed to the pressing rod 12 is driven to move up and down by the gear, thereby realizing the up-and-down movement of the pressing rod 12.

[0041] Since the pressing rod 12 is up and down sliding output pressure, the amplitude can be adjusted, especially for the need to disassemble and replace the screen, the maximum degree of release screen box 40 height space, so that the screen between the larger gap, thereby reducing the difficulty of screen disassembly and replacement.

[0042] In this embodiment, the controller 30 can control two drive members 14 to output corresponding actions according to the pressure detection value fed back by the pressure sensor 20. When the pressure detection value is greater than the set threshold range, in order to avoid the screen top grid 50 from being deformed by bearing too much pressing force, the drive member 14 can be controlled to drive the corresponding pressing rod 12 to move upward to reduce the output pressure. In most cases, the screen is loose locally or as a whole due to long-term operation, and at least one pressure detection value is less than the set threshold range. In this case, the controller 30 controls the corresponding drive member 14 to drive the pressing rod 12 to move downward to increase the output pressure, so as to ensure that the screen top grid 50 always maintains stable pressing force at each corner position, thereby improving the pressing reliability of the screen and avoiding the problem of leakage due to screen looseness.

[0043] As a variant of the above-mentioned transmission mechanism 13, please refer to Figure 4 , the transmission mechanism 13 includes a drive wheel 131 and a transmission rod 132; wherein the drive wheel 131 is rotationally connected in the housing 11 and is sleeved with the pressing rod 12, and the drive wheel 131 is threadedly connected with the pressing rod 12; the transmission rod 132 is rotationally connected in the housing 11 and is in transmission connection with the drive wheel 131, and one end of the transmission rod 132 is connected with the output end of the drive member 14.

[0044] In this embodiment, the drive member 14 is a rotary drive member 14 such as a motor. The motor drives the transmission rod 132 to rotate, and the transmission rod 132 transmits the rotary power to the drive wheel 131. Since the drive wheel 131 is threadedly connected with the pressing rod 12, the drive wheel 131 can drive the pressing rod 12 to move up and down when the drive wheel 131 rotates at a constant height, thereby adjusting the output pressure. Specifically, the transmission mode of the transmission rod 132 and the drive wheel 131 can be worm gear transmission or gear transmission (i.e. the drive wheel 131 is provided with gear teeth on the outer periphery, and a gear is sleeved on the transmission rod 132 or is integrally machined). In this embodiment, the transmission rod 132 and the drive wheel 131 are connected in transmission between the pressing rod 12 and the drive member 14, which can facilitate the spatial layout of the drive member 14, and can also utilize power transmission to form the effect of speed reduction and torque increase, thereby improving the driving force for the upward and downward movement of the pressing rod 12.

[0045] For example, Figure 4As shown, the driving wheel 131 is a worm wheel, the transmission rod 132 is a worm, and the worm and the worm wheel are in meshing transmission; one end of the pressing rod 12 passes out of the shell 11 upward to form a first operation end 121. The worm and worm wheel transmission mode has the advantages of large transmission ratio, which can reduce the dependence on the driving member 14 such as a motor, and then a relatively small low-power motor can be used to reduce the space occupation and facilitate the layout and installation; on the other hand, the transmission self-locking property of the worm and worm wheel can be used to avoid the worm wheel from driving the worm to rotate in the reverse direction and causing the pressing force of the pressing rod 12 on the screen grid to decrease; at the same time, the self-locking property of the worm and worm wheel can also be used to adjust the output pressure of the pressing rod 12 by manually rotating the first operation end 121; at this time, since the worm wheel is restricted by the worm and cannot rotate, the pressing rod 12 can move up and down based on the thread cooperation between the pressing rod 12 and the worm wheel, so as to avoid the situation that the pressure cannot be adjusted when the driving member 14 or the transmission mechanism 13 fails.

[0046] In some possible implementation manners, please refer to Figures 3 to 6 The composite pressing assembly 10 further includes a manual operation member 15 connected with the transmission rods 132 of the two transmission mechanisms 13 respectively, the manual operation member 15 includes a first sleeve 151, a second sleeve 152, and an operation rod 153; the first sleeve 151 is rotationally connected in the shell 11 and extends horizontally along the axial direction of the transmission rod 132, a first gear 1511 is sleeved on the first sleeve 151, and the first gear 1511 is in meshing transmission with a second gear 1321 sleeved on one of the transmission rods 132; one end of the first sleeve 151 passes out of the shell 11 to form a second operation end 1512; the second sleeve 152 is rotationally connected in the shell 11 coaxially with the first sleeve 151, a third gear 1521 is sleeved on the second sleeve 152, and the third gear 1521 is in meshing transmission with a fourth gear 1322 sleeved on the other transmission rod 132; one end of the operation rod 153 is connected with the second sleeve 152, and the other end passes through the first sleeve 151 and extends out of the second operation end 1512 to form a third operation end 1531.

[0047] The first sleeve 151 and the first gear 1511 can be rotated together by rotating the second operation end 1512 to drive the second gear 1321 to rotate, so that one of the transmission rods 132 is rotated to drive the driving wheel 131 to rotate, thereby realizing manual adjustment of the output pressure of the corresponding pressing rod 12; the operation rod 153 can drive the second sleeve 152 to rotate by rotating the third operation end 1531, so that the other transmission rod 132 is rotated through the power transmission of the third gear 1521 and the fourth gear 1322, thereby realizing manual adjustment of the output pressure of the other pressing rod 12; since the first sleeve 151 and the operation rod 153 extend horizontally, the second operation end 1512 and the third operation end 1531 can extend to the edge of the screen box 40 horizontally after passing through the shell 11, thereby facilitating manual operation and adjustment of the pressure by the operator, compared with the first operation end 121 located at the top of the screen box 40 and extending upward, which requires the worker to climb to the top wall of the screen box 40 during operation, which can greatly reduce the operation difficulty of manual adjustment.

[0048] It should be noted that the alarm device 60 electrically connected with the controller 30 can also be configured in the embodiment, and when the pressure detection value of the pressure sensor 20 fed back to the controller 30 exceeds the set time and the pressure detection value still does not return to the set threshold range, the controller 30 sends an alarm signal instruction to the alarm device 60. The alarm device 60 can be an audible and visual alarm, and when the duration of the pressure detection value exceeding the threshold value exceeds the set value such as one minute and still cannot recover to normal, it indicates that the automatic adjustment fails (i.e., the drive member 14 or the transmission mechanism 13 or the control fails), at this time, in order to avoid causing the screen to shift, the alarm device 60 can send an alarm to remind the worker to handle and maintain in time, and if the production task is urgent, the pressure can be adjusted to the normal state by adjusting the second operation end 1512 and / or the third operation end 1531.

[0049] In some embodiments, referring to Figure 5 and Figure 6 The first sleeve 151 is in sliding fit with the shell 11 along the axial direction, and the first sleeve 151 has a first transmission connection state of sliding to engage the first gear 1511 and the second gear 1321, and has a first transmission interruption state of sliding to separate the first gear 1511 and the second gear 1321.

[0050] It should be noted that the manual operating member 15 is a backup adjusting means in the event of failure of the driving member 14 or the transmission mechanism 13, and the first sleeve 151 is in sliding fit with the shell 11, so that the engagement and disengagement state of the first gear 1511 and the second gear 1321 can be switched by sliding the first sleeve 151, i.e. the first transmission connection state and the first transmission interruption state are switched. Under normal circumstances, only the first transmission interruption state needs to be maintained, which can reduce the invalid wear of the first gear 1511 and the second gear 1321 on one hand, and on the other hand, can avoid the influence of the transmission connection between the first gear 1511 and the second gear 1321 on the power transmission efficiency of the driving member 14 to the pressing rod 12. When the driving member 14 or the transmission mechanism 13 fails, the first transmission connection state is switched to rotate the second operating end 1512 to manually adjust the pressure of the corresponding pressing rod 12.

[0051] Specifically, the end of the first sleeve 151 extending into the shell 11 is provided with a first stop table 1513, and the first sleeve 151 is sleeved with a first elastic member 1514, one end of the first elastic member 1514 abuts against the first stop table 1513, and the other end is connected with the shell 11. The first sleeve 151 is kept in the first transmission interruption state under the thrusting action of the first elastic member 1514.

[0052] The first elastic member 1514 can be a spring, which forms an elastic thrusting force between the first stop table 1513 and the inner wall (or other ribs) of the shell 11, so that the first sleeve 151 is kept in the first transmission interruption state, avoiding the collision between the first gear 1511 and the second gear 1321 during the operation of the equipment. When manual pressure adjustment is needed, the first sleeve 151 can be pulled to make the first gear 1511 and the second gear 1321 engage, so as to switch to the first transmission connection state, which is simple and convenient to operate.

[0053] In some embodiments, as shown in Figure 6 The second sleeve 152 has a polygonal hole section 1522, and one end of the operating rod 153 is slidably arranged in the second sleeve 152 and is provided with a polygonal column 1532. The operating rod 153 has a second transmission connection state in which the polygonal column 1532 is inserted and fitted with the polygonal hole section 1522, and has a second transmission interruption state in which the polygonal column 1532 is separated from the polygonal hole section 1522.

[0054] When the polygonal column 1532 is inserted into the polygonal hole section 1522, the rotating power of the operating rod 153 can be transmitted to the second sleeve 152, so that the second transmission connection state and the second transmission interruption state can be switched by pushing and pulling the operating rod 153, and the second transmission interruption state is normally maintained, which can avoid the influence of the rotation of the operating rod 153 with the second sleeve 152 on the power transmission efficiency of the driving member 14 to the pressing rod 12; when the driving member 14 or the transmission mechanism 13 fails, the second transmission connection state is switched to rotate the third operating end 1531 to manually adjust the pressure of the corresponding pressing rod 12.

[0055] Specifically, referring to Figure 5 , the second stop table 1533 is arranged at the part of the operating rod 153 between the first sleeve 151 and the second sleeve 152, and the second elastic member 1534 is sleeved on the operating rod 153, one end of the second elastic member 1534 abuts against the second stop table 1533, and the other end is connected with the shell 11; wherein the operating rod 153 is kept in the second transmission interruption state under the thrust of the second elastic member 1534.

[0056] The second elastic member 1534 can be a spring, and the elastic thrust force is formed between the second stop table 1533 and the inner wall (or other rib plate) of the shell 11 through the second elastic member 1534, so that the operating rod 153 is kept in the second transmission interruption state; when manual pressure adjustment is needed, the operating rod 153 is pushed to overcome the elastic force of the second elastic member 1534, so that the polygonal column 1532 is inserted into the polygonal hole section 1522, and the second transmission connection state is switched, which is simple and convenient.

[0057] It should be explained that the thrust directions of the first elastic member 1514 to the first sleeve 151 and the second elastic member 1534 to the operating rod 153 are opposite. Since the operating rod 153 extends out of the first sleeve 151 through the second operating end 1512, when the second operating end 1512 needs to be rotated to manually adjust the pressure of the corresponding pressing rod 12, the second operating end 1512 is pulled outward to make the first sleeve 151 achieve the meshing of the first gear 1511 and the second gear 1321 during sliding, and when the third operating end 1531 needs to be rotated to manually adjust the corresponding pressing rod 12, the third operating end 1531 is pushed inward to make the operating rod 153 achieve the insertion of the polygonal column 1532 and the polygonal hole section 1522 during sliding, so as to avoid the interference problem between the second operating end 1512 and the third operating end 1531.

[0058] Based on the same inventive concept, combined with Figures 1 to 6It is understood that the embodiments of the present application also provide a high square flat screen, comprising a screen body and a plurality of composite compression detection devices; wherein a plurality of screen boxes 40 are arranged in an array in the screen body, and each screen box 40 is provided with a composite compression detection device on the top wall.

[0059] It should be noted that the controller 30 in each composite compression assembly 10 in the present embodiment is connected with the equipment control system, and the equipment control system can manually send control instructions to each controller 30, so as to release or compress the screen top grid 50 through the equipment control system when the screen grid is disassembled and replaced; of course, the controller 30 in each composite compression assembly 10 in the present embodiment can also be directly electrically connected with the equipment control system.

[0060] The high square flat screen provided by the embodiments of the present application compared with the prior art, since the composite compression detection device is arranged on the top of the screen box 40, not only can ensure the compression reliability of the screen grid, avoid the material channeling and leakage problem caused by the staff's inspection not in time and the screen grid loosening, but also can automatically release or compress the screen top grid 50 through the controller 30 to control the composite compression assembly 10 when the screen grid needs to be disassembled and replaced, without manual operation by climbing to the top of the screen body, so as to avoid the safety hidden danger of high-altitude operation, improve the disassembly and replacement efficiency of the screen grid, and further improve the production efficiency.

[0061] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A composite compression detection device, characterized by, The two composite pressing assemblies are respectively arranged on the two lateral sides of the top wall of one of the screen boxes, and each of the composite pressing assemblies has two vertically downward pressing output ends penetrating into the screen box and downward pressing on one of the corner of the screen top. Each of the composite pressing assemblies is provided with a controller electrically connected with the pressure sensor to obtain a pressure detection value, and the controller controls the corresponding pressing output end to adjust the output pressure when the pressure detection value exceeds a threshold value. The composite pressing assembly comprises: an outer shell fixedly connected with the top wall of the screen box; two pressing rods vertically slidingly connected in the outer shell and longitudinally spaced apart, one end of each of the pressing rods penetrating into the screen box and forming the pressing output end; two transmission mechanisms arranged in the outer shell, and the power output ends of the two transmission mechanisms are respectively connected with one of the pressing rods; two driving members arranged in the outer shell and electrically connected with the controller, and the output ends of the two driving members are respectively connected with the power input ends of the two transmission mechanisms. The transmission mechanism comprises: a driving wheel rotationally connected in the outer shell and sleeved on the pressing rod, and the driving wheel is threadedly connected with the pressing rod; a transmission rod rotationally connected in the outer shell and transmissionally connected with the driving wheel, one end of the transmission rod being connected with the output end of the driving member. The composite pressing assembly further comprises a manually operated member connected with the transmission rods of the two transmission mechanisms, and the manually operated member comprises: a first sleeve rotationally connected in the outer shell and horizontally extending along the axial direction of the transmission rod, a first gear being sleeved on the first sleeve, the first gear being meshed with a second gear sleeved on one of the transmission rods, one end of the first sleeve penetrating out of the outer shell to form a second operation end; a second sleeve rotationally connected in the outer shell and coaxially arranged with the first sleeve, a third gear being sleeved on the second sleeve, the third gear being meshed with a fourth gear sleeved on the other transmission rod; an operation rod having one end connected with the second sleeve and the other end penetrating through the first sleeve and extending out of the second operation end to form a third operation end. The first sleeve is slidingly connected with the outer shell along the axial direction, and the first sleeve has a first transmission connection state in which the first sleeve is slidingly connected with the first gear and the second gear, and a first transmission interruption state in which the first sleeve is slidingly connected with the first gear and the second gear is separated, one end of the first sleeve penetrating into the outer shell is provided with a first stop table, a first elastic member is sleeved on the first sleeve, one end of the first elastic member is abutted against the first stop table, and the other end of the first elastic member is connected with the outer shell, and the first sleeve is kept in the first transmission interruption state under the thrusting action of the first elastic member.

2. The composite compression detection device of claim 1, wherein, The driving wheel is a worm wheel, the transmission rod is a worm, and the worm is engaged with the worm wheel for transmission; one end of the pressing rod passes through the shell upward to form a first operation end.

3. The composite compression detection device of claim 1, wherein, The second sleeve has a polygonal hole section, one end of the operation rod is slidably arranged in the second sleeve and has a polygonal column; the operation rod has a second transmission connection state in which the polygonal column is inserted and matched with the polygonal hole section, and has a second transmission interruption state in which the polygonal column is separated from the polygonal hole section.

4. The composite compression detection device of claim 3, wherein, The operation rod is provided with a second stop table at a position between the first sleeve and the second sleeve, and a second elastic member is sleeved on the operation rod, one end of the second elastic member abuts against the second stop table, and the other end is connected with the shell; the operation rod is kept in the second transmission interruption state under the thrusting action of the second elastic member.

5. High square flat sieve, characterized in that, The composite compression detection device comprises the composite compression detection device according to any one of claims 1-4.

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