Anti-blocking quantitative feeding machine for sodium sulfite production

Abstract

The invention belongs to the technical field of sodium sulfite production, and discloses an anti-blocking quantitative feeding machine for sodium sulfite production. Comprising a mounting frame, the mounting frame is provided with a fixing cylinder, and a spiral conveying shaft is rotationally connected into the fixing cylinder; the shell is fixedly connected to the mounting frame, a motor is mounted on the shell, an output shaft of the motor is fixedly connected with a first spline rod, and the first spline rod is in spline connection with a rotating shaft; and the rotating shell is connected to the rotating shaft through a spline, the rotating shell is rotationally connected with the shell, the rotating shell is fixedly connected with a first gear, and the inner circumferential side of the rotating shell is fixedly connected with an arc-shaped rack. By changing the rotating mode of the spiral conveying shaft, the spiral conveying shaft rotates in a reciprocating mode to push powder in the fixing barrel to move in a reciprocating mode, the caked powder is gradually loosened, the situation that the powder in the fixing barrel is blocked greatly due to caking is avoided, the operation load of the motor is reduced, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of sodium sulfite production and discloses an anti-blocking quantitative feeder for sodium sulfite production. Background Art

[0002] With the rapid development of the chemical industry, the production process of various chemicals has higher and higher requirements for equipment, especially in material handling. Sodium sulfite, as an important chemical raw material, often requires the use of quantitative feeders for accurate metering and transportation of materials during the production process. However, in actual operation, the sodium bisulfite powder and sodium hydroxide powder used to prepare sodium sulfite have strong hygroscopicity. After long-term storage, they are easy to absorb moisture in the air and agglomerate, making it easy to adhere to the inside of the equipment during transportation. This not only affects the normal fluidity of the material, but also leads to problems such as reduced transportation efficiency and increased energy consumption. In particular, when a screw conveyor is used as the main conveying tool, the wet powder will increase the friction between the screw conveyor shaft and the conveyor casing, resulting in an increase in the motor load. Long-term operation may even cause the motor to overheat and damage, increasing the equipment maintenance cost and failure rate. Summary of the invention

[0003] In order to overcome the shortcoming that the transport of wet powder by a screw conveyor will increase the load on the motor, the present invention provides an anti-blocking quantitative feeder for sodium sulfite production.

[0004] The technical solution is as follows: A blocking-proof quantitative feeder for sodium sulfite production, comprising:

[0005] A mounting frame, wherein the mounting frame is provided with a fixed cylinder, the fixed cylinder is provided with a feed port and a discharge port, a spiral conveying shaft is rotatably connected in the fixed cylinder, and the mounting frame is provided with a weighing module;

[0006] A housing is fixed to the mounting frame, a motor is installed on the housing, a first spline rod is fixed to the output shaft of the motor, a rotating shaft is spline-connected to the first spline rod, a rotating plate is rotatably connected in the housing, and the rotating plate is fixed to the screw conveying shaft;

[0007] A first limiting ring, rotatably connected to the rotating plate, a first limiting block is provided on the rotating shaft, and the first limiting block is used to limit the first limiting ring;

[0008] A rotating shell, spline-connected to the rotating shaft, the rotating shell is rotatably connected to the housing, the rotating shell is fixedly connected to a first gear, and an arc-shaped rack is fixedly connected to the inner circumference of the rotating shell;

[0009] The detection component is arranged on the rotating plate and is used for detecting the resistance experienced by the spiral conveying shaft.

[0010] Preferably, the detection component comprises:

[0011] An arc-shaped shell is fixedly connected to the rotating plate, an arc-shaped rod is slidably connected inside the arc-shaped shell, a first elastic member is fixedly connected between the two, and the arc-shaped rod is fixedly connected to the first limiting ring;

[0012] A fixed shell is fixedly connected to the housing, a sliding rod is slidably connected in the fixed shell, a sliding plate is sealingly slidably connected in the fixed shell, a second elastic member is fixedly connected between the sliding plate and the sliding rod, and the sliding rod is rotationally connected to the rotating shaft in a limited position;

[0013] A first elastic telescopic rod is fixedly connected to the housing, and two limiting grooves are arranged on the sliding rod, and the first elastic telescopic rod is used to limit the limiting grooves of the sliding rod;

[0014] The transmission assembly is arranged in the housing and is used to control the movement of the sliding plate.

[0015] Preferably, the first elastic member sliding between the arc-shaped rod and the arc-shaped shell is in a force storage state.

[0016] Preferably, the elastic coefficient of the second elastic member between the sliding plate and the sliding rod is smaller than the elastic coefficient of the first elastic member between the arc-shaped shell and the arc-shaped rod.

[0017] Preferably, the transmission assembly comprises:

[0018] An elastic oil bag is arranged in the arc-shaped shell, and the elastic oil bag is fixedly connected to the arc-shaped rod;

[0019] A first oil guide housing is sealingly and rotatably connected to the rotating shaft, a first oil delivery pipe is connected between the first oil guide housing and the elastic oil bag, a second oil guide housing is sealingly and rotatably connected to the rotating shaft, a cavity is provided in the rotating shaft, both the first oil guide housing and the second oil guide housing are connected to the cavity of the rotating shaft, a second oil delivery pipe is connected between a side of the fixed housing close to the sliding plate and the second oil guide housing, the sliding plate is located between the second oil delivery pipe of the fixed housing and the sliding rod, and the second oil guide housing is limitedly and slidably connected to the housing;

[0020] A fixed plate is fixedly connected to the cavity of the rotating shaft, and a first oil guide hole and a second oil guide hole are formed on the fixed plate. The fixed plate is located between the cavity of the rotating shaft and the connection point between the first oil guide shell and the second oil guide shell, and a one-way valve is arranged in the first oil guide hole of the fixed plate.

[0021] Preferably, the flow rate of the one-way valve on the fixed plate is greater than the flow rate of the second oil guide hole of the fixed plate.

[0022] Preferably, the transmission assembly further comprises:

[0023] A support plate is fixed in the housing, the support plate is rotatably connected to a rotating rod, the rotating rod is fixed to a second gear, and the first gear and the arc-shaped rack are both used to drive the second gear to rotate;

[0024] The second limiting ring is rotatably connected to the support plate, a transmission member is arranged between the second limiting ring and the rotating rod, a disc is rotatably connected to the rotating shaft, a plurality of transmission telescopic rods are arranged between the disc and the rotating plate, a second limiting block is arranged on the disc, and the second limiting block is used for limiting the second limiting ring, and the disc is fixedly connected to the first oil guide housing.

[0025] As a preference, it also includes:

[0026] A sliding block, wherein a chamber is provided in the spiral conveying shaft, the sliding block is slidably connected in the chamber of the spiral conveying shaft, the sliding block is fixedly connected with a spiral plate, the spiral plate slides in the chamber of the spiral conveying shaft, the spiral conveying shaft is provided with a spiral groove, and the spiral plate is used to block the spiral groove of the spiral conveying shaft;

[0027] There are several scrapers fixed to the spiral plate. The scrapers pass through the spiral groove of the spiral conveying shaft and slide along the spiral groove of the spiral conveying shaft. The spiral plate is used to clean the spiral conveying shaft.

[0028] As a preference, it also includes:

[0029] A support member is fixedly connected to a side of the fixed cylinder close to the discharge port, the support member is rotatably connected to a rotating block, the rotating block is fixedly connected to a second spline rod, the sliding block is provided with a one-way rotating wheel, the sliding block is provided with a through hole, the second spline rod passes through the through hole of the sliding block and is spline-connected to the one-way rotating wheel, and a third elastic member is fixedly connected between the rotating block and the one-way rotating wheel.

[0030] As a preference, it also includes:

[0031] The second elastic telescopic rod is arranged on the one-way rotating wheel. The support member is provided with a plurality of limiting holes. The limiting holes on the support member are used to limit the telescopic end of the second elastic telescopic rod. The support member and the telescopic end of the second elastic telescopic rod are magnetically attracted to each other.

[0032] The beneficial effects achieved by the present invention using the above structure are as follows: the present invention changes the rotation mode of the screw conveying shaft to make the screw conveying shaft rotate reciprocatingly, thereby pushing the powder in the fixed barrel to move reciprocatingly, so that the agglomerated powder is gradually loosened, thereby avoiding a large amount of blockage of the powder in the fixed barrel due to agglomeration, reducing the operating load of the motor, and extending the service life of the motor. The proportion of material conveyed by the screw conveying shaft is controlled by the weighing module, thereby avoiding unnecessary side reactions and improving the purity of the product.

[0033] By detecting the running resistance of the screw conveyor shaft, it can be discovered in time when agglomerated powder appears in the fixed cylinder and causes the running resistance of the screw conveyor shaft to increase. The screw conveyor shaft can be used to push the agglomerated powder back and forth to gradually loosen the powder, thereby preventing the motor from working in a high-load environment for a long time and extending the service life of the motor.

[0034] The powder adhered to the spiral conveying shaft is scraped off by the scraper, and the third elastic member accumulates force when the scraper moves for the first time. The accumulated force of the third elastic member enables the scraper to perform secondary cleaning on the spiral conveying shaft when resetting, and stir the powder in the fixed cylinder to improve the dispersion of the powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0036] Figure 2 It is a cross-sectional view of the fixing cylinder and the housing of the present invention;

[0037] Figure 3 It is a three-dimensional structural schematic diagram of the motor and the rotating plate of the present invention;

[0038] Figure 4 It is a schematic diagram of the three-dimensional structure of the arc-shaped shell and the first oil guide shell of the present invention;

[0039] Figure 5 It is a schematic diagram of the three-dimensional structure of the arc rod and the elastic oil bag of the present invention;

[0040] Figure 6 It is a schematic diagram of the three-dimensional structure of the sliding rod and the second oil guide housing of the present invention;

[0041] Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating shaft and the first limit block of the present invention;

[0042] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing plate of the present invention;

[0043] Fig. 9 It is a schematic diagram of the three-dimensional structure of the rotating shell and the second limiting ring of the present invention;

[0044] Fig.10 It is a cross-sectional view of the fixed cylinder and the spiral conveying shaft of the present invention;

[0045] Fig.11 It is a schematic diagram of the three-dimensional structure of the spiral plate and the scraper of the present invention;

[0046] Fig.12 It is a schematic diagram of the three-dimensional structure of the sliding block and the supporting member of the present invention;

[0047] Fig.13 It is a schematic diagram of the three-dimensional structure of the one-way rotating wheel and the second elastic telescopic rod of the present invention.

[0048] Explanation of reference numerals: 1-mounting frame, 2-fixed cylinder, 3-screw conveying shaft, 4-weighing module, 5-housing, 6-motor, 601-first spline rod, 7-rotating shaft, 8-rotating plate, 9-first limiting ring, 10-first limiting block, 11-arc shell, 12-arc rod, 13-fixed shell, 14-sliding rod, 15-sliding plate, 16-first elastic telescopic rod, 17-elastic oil bag, 18-first oil guide shell, 19-second guide Oil shell, 20-fixed plate, 22-rotating shell, 23-first gear, 2301-arc rack, 25-support plate, 26-rotating rod, 27-second gear, 28-second limiting ring, 29-disc, 30-transmission telescopic rod, 31-second limiting block, 32-sliding block, 33-spiral plate, 34-scraper, 35-support member, 36-rotating block, 37-second spline rod, 38-one-way rotating wheel, 39-second elastic telescopic rod. DETAILED DESCRIPTION

[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0050] Example 1: A quantitative feeder for sodium sulfite production with an anti-blocking type, such as Figure 1-Figure 6 and Fig. 9 As shown, it includes: a mounting frame 1, the mounting frame 1 is provided with a fixed cylinder 2, the fixed cylinder 2 is provided with a feed port and a discharge port, a screw conveying shaft 3 is rotatably connected in the fixed cylinder 2, and the mounting frame 1 is provided with a weighing module 4; a shell 5, fixedly connected to the mounting frame 1, the shell 5 is installed with a motor 6, the output shaft of the motor 6 is fixedly connected to a first spline rod 601, the first spline rod 601 is spline-connected to a rotating shaft 7, a rotating plate 8 is rotatably connected in the shell 5, and the rotating plate 8 is fixedly connected to the screw conveying shaft 3; a first limiting ring 9, rotatably connected to the rotating plate 8, a first limiting block 10 is provided on the rotating shaft 7, and the first limiting block 10 is used to limit the first limiting ring 9; a rotating shell 22, spline-connected to the rotating shaft 7, the rotating shell 22 is rotatably connected to the shell 5, the rotating shell 22 is fixedly connected to the first gear 23, and the inner circumference of the rotating shell 22 is fixedly connected to an arc-shaped rack 2301; a detection component, arranged on the rotating plate 8, for detecting the resistance exerted on the screw conveying shaft 3.

[0051] In the above scheme, the weighing module 4 is composed of a mounting frame, a pressure sensor, an electronic valve and a hopper. The weighing module 4 can be detachably mounted on the mounting frame 1, and the mounting angle can be freely selected. The pressure sensor is used to detect the weight of the material in the hopper. The electronic valve is installed at the discharge port of the hopper and is electrically connected to the pressure sensor to control the opening and closing of the discharge port. The hopper of the weighing module 4 is connected to the feed port of the fixed cylinder 2 through a soft pipe. The first limit ring 9 is provided with a plurality of circumferentially distributed grooves. The number of the first limit blocks 10 is consistent with the number of grooves on the first limit ring 9. The first limit blocks 10 correspond one-to-one to the grooves on the first limit ring 9, and the facing sides of the two are provided with inclined surfaces to facilitate the first limit block 10 to be inserted into the corresponding groove on the first limit ring 9. The first limit ring 9 and the first limit block 10 are initially in a limited state, and the first gear 23 is a missing gear.

[0052] like Figure 3-Figure 6 As shown, the detection assembly includes: an arc-shaped shell 11, which is fixed to the rotating plate 8, and an arc-shaped rod 12 is slidably connected in the arc-shaped shell 11, and a first elastic member is fixed between the two, and the first elastic member between the arc-shaped rod 12 and the arc-shaped shell 11 is in a force storage state, and the arc-shaped rod 12 is fixed to the first limit ring 9; a fixed shell 13, which is fixed to the housing 5, and a sliding rod 14 is slidably connected in the fixed shell 13, and a sliding plate 15 is sealed and slidably connected in the fixed shell 13, and the sliding plate 15 and the sliding rod 14 are connected. A second elastic member is fixedly connected between the sliding plate 15 and the sliding rod 14, and the elastic coefficient of the second elastic member between the sliding plate 15 and the sliding rod 14 is smaller than the elastic coefficient of the first elastic member between the arc shell 11 and the arc rod 12. The sliding rod 14 is connected to the rotating shaft 7 for limited rotation; a first elastic telescopic rod 16 is fixedly connected to the shell 5, and two limiting grooves are provided on the sliding rod 14. The first elastic telescopic rod 16 is used to limit the limiting grooves of the sliding rod 14; a transmission assembly is arranged in the shell 5, and is used to control the movement of the sliding plate 15.

[0053] In the above scheme, the first elastic member between the arc shell 11 and the arc rod 12 is set as a spring, and is initially in a power storage state. If the powder in the fixed cylinder 2 is not agglomerated, the resistance encountered by the spiral conveying shaft 3 will not be compressed when it is transmitted to the first elastic member in the arc shell 11. If the powder is agglomerated, the rotational resistance of the spiral conveying shaft 3 will increase. When the resistance encountered by the spiral conveying shaft 3 is transmitted to the first elastic member in the arc shell 11, the first elastic member in the arc shell 11 will be compressed, so as to detect the size of the resistance encountered by the spiral conveying shaft 3. In the initial state, the sliding plate 15 is close to the side of the fixed shell 13 away from the sliding rod 14, and the second elastic member between the sliding plate 15 and the sliding rod 14 The elastic member is configured as a spring, and the sliding rod 14 is composed of an L-shaped rod and a limiting swivel. The limiting swivel of the sliding rod 14 is connected to the rotating shaft 7 for limiting rotation. The telescopic end of the first elastic telescopic rod 16 is provided with two symmetrically distributed inclined surfaces, and the limiting groove of the sliding rod 14 is provided with two symmetrically distributed inclined surfaces. The inclined surface of the telescopic end of the first elastic telescopic rod 16 squeezes the inclined surface of the limiting groove of the sliding rod 14, so that the first elastic telescopic rod 16 limits the sliding rod 14 quickly and accurately. In the initial state, the first elastic telescopic rod 16 limits the limiting groove on the side of the sliding rod 14 away from the sliding plate 15. When the first elastic member between the arc shell 11 and the arc rod 12 is extended and reset, it can stretch the second elastic member between the sliding plate 15 and the sliding rod 14.

[0054] like Figure 3-Figure 8 As shown, the transmission assembly includes: an elastic oil bag 17, which is arranged in the arc-shaped shell 11, and the elastic oil bag 17 is fixedly connected to the arc-shaped rod 12; a first oil guide shell 18, which is sealed and rotatably connected to the rotating shaft 7, and a first oil delivery pipe is connected between the first oil guide shell 18 and the elastic oil bag 17, and the rotating shaft 7 is sealed and rotatably connected to the second oil guide shell 19, and a cavity is arranged in the rotating shaft 7, and the first oil guide shell 18 and the second oil guide shell 19 are both connected to the cavity of the rotating shaft 7, and a fixed shell 13 is connected to the second oil guide shell 19 on the side close to the sliding plate 15. The second oil delivery pipe, the sliding plate 15 is located between the second oil delivery pipe of the fixed shell 13 and the sliding rod 14, and the second oil guide shell 19 is connected to the shell 5 in a limited sliding manner; the fixed plate 20 is fixedly connected to the cavity of the rotating shaft 7, and the first oil guide hole and the second oil guide hole are opened on the fixed plate 20. The fixed plate 20 is located between the cavity of the rotating shaft 7 and the connecting part of the first oil guide shell 18 and the second oil guide shell 19. A one-way valve is arranged in the first oil guide hole of the fixed plate 20, and the flow rate of the one-way valve on the fixed plate 20 is greater than the flow rate of the second oil guide hole of the fixed plate 20.

[0055] In the above scheme, the elastic oil bag 17, the first oil guide shell 18, the second oil guide shell 19, the first oil pipe of the first oil guide shell 18, the second oil pipe of the second oil guide shell 19 and the cavity of the rotating shaft 7 are all filled with hydraulic oil. The first oil pipe of the first oil guide shell 18 and the second oil pipe of the second oil guide shell 19 have a margin, so that the first oil guide shell 18 and the second oil guide shell 19 can move smoothly. The second oil guide shell 19 is composed of a rotating shell and a limit rod. The limit rod of the second oil guide shell 19 is slidably connected to the housing 5. The flow rate of the one-way valve on the fixed plate 20 is greater than that of the fixed plate. 20, and the flow direction of the one-way valve on the fixed plate 20 is from the side of the fixed plate 20 close to the first oil guide shell 18 to the side of the fixed plate 20 close to the second oil guide shell 19, so that the hydraulic oil in the first oil guide shell 18 can flow quickly when flowing to the second oil guide shell 19, and the hydraulic oil in the second oil guide shell 19 flows slowly when flowing to the first oil guide shell 18, so that the reflux speed of the hydraulic oil is reduced, so that the spiral conveying shaft 3 has enough time to reciprocate and reciprocate to push the agglomerated powder in the fixed cylinder 2 to loosen the agglomerated powder.

[0056] like Figure 1 , Figure 3 , Figure 4 , Figure 6 and Fig. 9 As shown, the transmission assembly also includes: a support plate 25, which is fixed in the shell 5, and the support plate 25 is rotatably connected to a rotating rod 26, and the rotating rod 26 is fixed to a second gear 27, and the first gear 23 and the arc rack 2301 are both used to drive the second gear 27 to rotate; a second limiting ring 28, which is rotatably connected to the support plate 25, and a transmission member is arranged between the second limiting ring 28 and the rotating rod 26, and a rotating shaft 7 is rotatably connected to a disc 29, and a plurality of transmission telescopic rods 30 are arranged between the disc 29 and the rotating plate 8, and the disc 29 is provided with a second limiting block 31, and the second limiting block 31 is used to limit the second limiting ring 28, and the disc 29 is fixed to the first oil guide shell 18.

[0057] In the above scheme, the second gear 27 is meshed with the arc-shaped rack 2301 while being disengaged from the first gear 23, and the second gear 27 is meshed with the first gear 23 while being disengaged from the arc-shaped rack 2301, so that the first gear 23 and the arc-shaped rack 2301 drive the second gear 27 to reciprocate, and the second limiting ring 28 is provided with a plurality of circumferentially distributed grooves, and the number of the second limiting blocks 31 is consistent with the number of grooves on the second limiting ring 28, and the second limiting blocks 31 and the grooves on the second limiting ring 28 are consistent. The bodies correspond one to one, and the facing sides of the two are provided with inclined surfaces, which are used to facilitate the second limit block 31 to be inserted into the corresponding groove body on the second limit ring 28. At least two transmission telescopic rods 30 are provided, which are used to ensure stable transmission between the disc 29 and the rotating plate 8. A displacement sensor is provided in one of the transmission telescopic rods 30. The displacement sensor of the transmission telescopic rod 30 and the electronic valve in the weighing module 4 are transmitted through electrical signals. The transmission member between the second limit ring 28 and the rotating rod 26 is provided as two gears meshing with each other.

[0058] When the device is needed to be used for feeding during the sodium sulfite production process, the device is installed at a required angle, and the discharge port of the fixed cylinder 2 is connected to the sodium sulfite production device. After the device is fixed, the weighing module 4 is installed, and the weighing module 4 is placed in a horizontal state. After the installation of the device is completed, the staff adds the powder that needs to be transported to the sodium sulfite production device into the weighing module 4, and then starts the motor 6. The output shaft of the motor 6 rotates and drives the rotating shaft 7 to rotate. While the rotating shaft 7 rotates, the first limiting ring 9 is driven to rotate through the first limiting block 10. The rotation of the first limiting ring 9 causes the arc rod 12 to apply pressure to the first elastic member in the arc shell 11. At this time, if the powder in the fixed cylinder 2 is not agglomerated, the resistance encountered by the spiral conveying shaft 3 is transmitted to the first elastic member in the arc shell 11 through the rotating plate 8, and the first elastic member in the arc shell 11 will not be compressed.

[0059] When the powder in the fixed cylinder 2 is not agglomerated, the pressure of the first elastic member on the arc rod 12 is transmitted to the arc shell 11, and the rotating plate 8 is driven to rotate through the arc shell 11. The rotation of the rotating plate 8 drives the screw conveying shaft 3 to rotate. The rotation of the screw conveying shaft 3 conveys the powder in the weighing module 4 to the sodium sulfite production device through the fixed cylinder 2. In the process of the screw conveying shaft 3 conveying the powder, the weighing module 4 detects the weight of the remaining powder therein. After the powder in the weighing module 4 is reduced by a specified weight, the electronic valve in the weighing module 4 is closed, and the feeding to the fixed cylinder 2 is stopped. Subsequently, after the powder in the fixed cylinder 2 is completely conveyed into the sodium sulfite production device, the staff turns off the motor 6, and the rotating shaft 7 and the screw conveying shaft 3 stop rotating.

[0060] During the rotation of the rotating plate 8, the disc 29 is driven to rotate synchronously through the transmission telescopic rod 30, and the disc 29 drives the first oil guide shell 18 to rotate, so as to ensure that the first oil guide shell 18 and the rotating plate 8 keep rotating synchronously, so that the first oil pipeline between the arc-shaped shell 11 and the first oil guide shell 18 is in a stationary state between the two. During the rotation of the rotating shaft 7, the rotating shell 22 is also driven to rotate synchronously. When the rotating shell 22 rotates, the first gear 23 and the arc-shaped rack 2301 thereon are driven to rotate synchronously. The first gear 23 and the arc-shaped rack 2301 rotate synchronously to drive the second gear 27 to reciprocate. The reciprocating rotation of the second gear 27 drives the second limit ring 28 to reciprocate through the transmission member between the rotating rod 26 and the rotating rod 26 and the second limit ring 28.

[0061] During the process of the spiral conveying shaft 3 rotating to convey the powder, if the powder is in a wet state, its fluidity becomes poor, which will increase the rotation resistance of the spiral conveying shaft 3. The resistance encountered by the spiral conveying shaft 3 is transmitted to the arc shell 11 through the rotating plate 8, so that the first elastic member between the arc shell 11 and the arc rod 12 is subjected to additional extrusion force. At this time, the first elastic member in the arc shell 11 is compressed again, and the arc shell 11 and the arc rod 12 slide relative to each other. The arc rod 12 slides and squeezes the elastic oil bag 17. The hydraulic oil in the elastic oil bag 17 enters the first oil guide shell 18 through the first oil delivery pipe thereon. The hydraulic oil entering the first oil guide shell 18 enters the second oil guide shell 19 through the cavity in the rotating shaft 7 and the one-way valve and the second oil guide hole on the fixed plate 20. The hydraulic oil entering the second oil guide shell 19 enters the fixed shell 13 through the second oil delivery pipe thereon. The hydraulic oil entering the fixed shell 13 pushes the sliding plate 15 to move in the direction close to the sliding rod 14 and compresses the second elastic member of the sliding rod 14.

[0062] During the compression of the second elastic member of the sliding rod 14, the sliding rod 14 will not move under the limitation of the first elastic telescopic rod 16. After the second elastic member of the sliding rod 14 is compressed to the limit state, the sliding plate 15 pushes the sliding rod 14 to move through the second elastic member thereon. The sliding rod 14 moves to squeeze the telescopic end of the first elastic telescopic rod 16, so that the first elastic telescopic rod 16 releases the limitation on the sliding rod 14. After the limitation of the sliding rod 14 is released, the elastic force of the second elastic member of the sliding rod 14 is quickly released and drives the sliding rod 14 to move quickly. The movement of the sliding rod 14 drives the rotating shaft 7 to move to the right until the sliding rod 14 is close to the limiting groove of the sliding plate 15 and the telescopic end of the first elastic telescopic rod 16 is in the corresponding position, and the telescopic end of the first elastic telescopic rod 16 extends out to limit the sliding rod 14 and then stops.

[0063] During the movement of the rotating shaft 7, the rotating shaft 7 drives the first limit block 10, the first oil guide shell 18, the second oil guide shell 19 and the disc 29 to move synchronously, the first limit block 10 and the first limit ring 9 are disengaged from the limit, the rotating plate 8 and the disc 29 temporarily stop rotating, the disc 29 moves to stretch the transmission telescopic rod 30, the telescopic end of the transmission telescopic rod 30 is stretched, the displacement sensor inside it is triggered, and the electronic valve in the weighing module 4 is controlled to be temporarily closed, the movement of the disc 29 drives the second limit block 31 to move and limit the second limit ring 28, at this time, the second limit ring 28 reciprocates to drive the disc 29 to reciprocate, the disc 29 drives the rotating plate 8 to reciprocate through the transmission telescopic rod 30, the rotating plate 8 drives the screw conveying shaft 3 to reciprocate, the reciprocating rotation of the screw conveying shaft 3 pushes the powder in the fixed barrel 2 back and forth, so that the agglomerated powder in the fixed barrel 2 is loosened, so as to reduce the resistance of the powder to the screw conveying shaft 3, avoid the motor 6 from working under high load for a long time, and extend the service life of the motor 6.

[0064] In the process of the disc 29 driving the rotating plate 8 to rotate back and forth, the thrust of the first limit ring 9 on the arc rod 12 disappears, and the arc rod 12 is reset under the action of the first elastic member thereon and pulls the elastic oil bag 17 to reset. The reset of the elastic oil bag 17 drives the hydraulic oil in the fixed shell 13 to flow back. When the hydraulic oil flowing back in the fixed shell 13 passes through the fixed plate 20, the one-way valve thereon is in a blocked state, so that the hydraulic oil can only flow back through the second oil guide hole on the fixed plate 20. Since the flow rate of the second oil guide hole on the fixed plate 20 is less than the flow rate of the one-way valve thereon, the reflux speed of the hydraulic oil in the fixed plate 20 is slow, so that the spiral conveying shaft 3 has enough time to reciprocate and push the powder in the fixed cylinder 2 to loosen the powder.

[0065] When the second elastic member of the sliding rod 14 is pulled back, the second elastic member of the sliding rod 14 is pulled back, and the sliding rod 14 is pulled back to the original position, and the second elastic member of the sliding rod 15 is pulled back to the original position, and the sliding rod 14 is pulled back to the original position, and the second elastic member of the sliding rod 14 is pulled back to the original position, and the sliding rod 14 is pulled back to the original position, and the second elastic member of the sliding rod 14 is pulled back to the original position, and the sliding rod 14 is pulled back to the original position, and the second elastic member of the sliding rod 14 is pulled back to the original position, and the sliding rod 14 is pulled back to the original position, and the second elastic member of the sliding rod 14 is pulled back to the original position, and the sliding rod 14 is pulled back to the original position, and the second elastic member of the sliding rod 14 is pulled back to the original position, and the sliding rod 14 is pulled back to the original position, and the sliding rod 14 is pulled back to the original position, and the sliding rod 14 is pulled back to the original position, and the sliding rod 14 is pulled back to the original position, and the sliding rod 14 is pulled back to the original position, and the sliding shaft 7 is pulled back to the original position, and the rotating ...

[0066] After the rotating shaft 7 is reset, the second limit block 31 and the second limit ring 28 are disengaged from the limit, the transmission telescopic rod 30 is completely retracted, and the displacement sensor in the transmission telescopic rod 30 controls the electronic valve in the weighing module 4 to open. The rotating shaft 7 drives the rotating plate 8 to rotate through the first limit ring 9, the first limit block 10, the arc rod 12 and the arc shell 11. The rotation of the rotating plate 8 drives the screw conveying shaft 3 to rotate, and then the screw conveying shaft 3 can convey materials normally. If the fixed cylinder 2 has agglomerated powder again, the above action is repeated.

[0067] Embodiment 2: Based on embodiment 1, Fig.10 and Fig.11 As shown, it also includes: a sliding block 32, a chamber is set in the spiral conveying shaft 3, the sliding block 32 is slidably connected to the chamber of the spiral conveying shaft 3, the sliding block 32 is fixedly connected to a spiral plate 33, the spiral plate 33 slides in the chamber of the spiral conveying shaft 3, the spiral conveying shaft 3 is provided with a spiral groove, and the spiral plate 33 is used to block the spiral groove of the spiral conveying shaft 3; there are several scrapers 34, which are fixedly connected to the spiral plate 33, the scrapers 34 pass through the spiral groove of the spiral conveying shaft 3, and slide along the spiral groove of the spiral conveying shaft 3, and the spiral plate 33 is used to clean the spiral conveying shaft 3.

[0068] In the above scheme, the length of the spiral plate 33 is greater than the length of the spiral groove of the spiral conveying shaft 3. The spiral plate 33 is restricted by the scraper 34 to ensure that the spiral plate 33 can always block the spiral groove of the spiral conveying shaft 3. The scraper 34 is located on the side of the spiral conveying shaft 3 close to the discharge port, and is used to clean the powder adhered to the spiral conveying shaft 3.

[0069] like Fig.10 , Fig.12 and Fig.13 As shown, it also includes: a support member 35, which is fixedly connected to one side of the fixed cylinder 2 near the discharge port. The support member 35 is rotatably connected to a rotating block 36, and the rotating block 36 is fixedly connected to a second spline rod 37. The sliding block 32 is provided with a one-way rotating wheel 38. The sliding block 32 has a through hole. The second spline rod 37 passes through the through hole of the sliding block 32 and is spline-connected to the one-way rotating wheel 38. A third elastic member is fixedly connected between the rotating block 36 and the one-way rotating wheel 38.

[0070] In the above scheme, the outer ring of the one-way wheel 38 is fixed to the sliding block 32, the inner ring of the one-way wheel 38 is rotatably connected to the sliding block 32, the sliding block 32 and the second spline rod 37 do not contact each other, and the third elastic member between the rotating block 36 and the one-way wheel 38 is set as a tension spring, and the third elastic member is fixed to the inner ring of the one-way wheel 38.

[0071] like Fig.10 , Fig.12 and Fig.13As shown, it also includes: a second elastic telescopic rod 39, which is arranged on the one-way rotating wheel 38, and a plurality of limiting holes are arranged on the support member 35. The limiting holes on the support member 35 are used to limit the telescopic end of the second elastic telescopic rod 39, and the support member 35 and the telescopic end of the second elastic telescopic rod 39 are magnetically attracted to each other.

[0072] In the above scheme, the second elastic telescopic rod 39 is fixed to the inner ring of the one-way rotating wheel 38. Before the telescopic end of the second elastic telescopic rod 39 is fully extended, it will not slide in the limiting hole on the support member 35. The telescopic end of the second elastic telescopic rod 39 is provided with a spherical surface so that it can smoothly enter the limiting hole on the support member 35.

[0073] During the normal feeding process of the screw conveyor shaft 3, the screw conveyor shaft 3 drives the scraper 34 to rotate synchronously, and the scraper 34 drives the sliding block 32 to rotate synchronously through the screw plate 33. The rotation of the sliding block 32 drives the outer ring of the one-way rotating wheel 38 to rotate. At this time, the outer ring and the inner ring of the one-way rotating wheel 38 are not limited to each other (with Fig.13 The powder is in a wet state, and its fluidity deteriorates. At the same time, part of the powder adheres to the screw conveying shaft 3. During the reciprocating rotation of the screw conveying shaft 3, when the screw conveying shaft 3 is reversed (in the form of Fig.13 The outer ring and the inner ring of the one-way rotating wheel 38 are in a limited position. At this time, under the action of the second elastic telescopic rod 39, the inner ring of the one-way rotating wheel 38 clamps the outer ring, so that the sliding block 32 does not rotate when the screw conveying shaft 3 is reversed.

[0074] During the reversal of the spiral conveying shaft 3, the spiral plate 33 and the scraper 34 thereon do not rotate under the action of the sliding block 32. As the spiral conveying shaft 3 rotates, the scraper 34 and the spiral groove of the spiral conveying shaft 3 slide relative to each other, causing the sliding block 32 to move away from the support member 35. During this process, the scraper 34 scrapes off the powder attached to the spiral conveying shaft 3. During the movement of the sliding block 32, the sliding block 32 drives the one-way rotating wheel 38 to move, and the one-way rotating wheel 38 drives the second elastic telescopic rod 39 to move and stretch the third elastic member thereon. The one-way rotating wheel 38 slides on the second spline rod 37 when moving. During this process, the telescopic end of the second elastic telescopic rod 39 extends out and maintains magnetic attraction with the support member 35.

[0075] When the telescopic end of the second elastic telescopic rod 39 is fully pulled out, the movement of the sliding block 32 can drive the telescopic end of the second elastic telescopic rod 39 to move, so that the telescopic end of the second elastic telescopic rod 39 is separated from the magnetic attraction, and then the telescopic end of the second elastic telescopic rod 39 is quickly retracted due to its own elasticity. At this time, the second elastic telescopic rod 39 releases the limit of the sliding block 32 and the rotating block 36 through the one-way rotating wheel 38, and the sliding block 32 and the rotating block 36 can rotate, so that the spiral plate 33 can rotate. Then the pulling force of the third elastic member is released, and the sliding block 32 is pulled to move and reset through the one-way rotating wheel 38. During the movement of the sliding block 32, the scraper 34 slides in the spiral groove of the screw conveying shaft 3, so that the scraper 34 rotates relative to the screw conveying shaft 3. The scraper 34 rotates rapidly to quickly scrape off the powder attached to the screw conveying shaft 3, thereby improving the cleaning effect of the screw conveying shaft 3. During the rapid rotation of the scraper 34, it stirs the powder in the fixed cylinder 2 to loosen the agglomerated powder faster.

[0076] After the sliding block 32 moves to reset, the telescopic end of the second elastic telescopic rod 39 is limited by the support member 35 again, so that the second elastic telescopic rod 39 limits the sliding block 32 again through the one-way rotating wheel 38, and the scraper 34 and the spiral plate 33 repeat the above action during the reversal of the spiral conveying shaft 3. The scraper 34 cleans the spiral conveying shaft 3 through the reversal of the spiral conveying shaft 3, so that the powder in the fixed cylinder 2 is loosened faster.

[0077] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A blockage-proof quantitative feeder for sodium sulfite production, characterized in that: include: A mounting frame (1), the mounting frame (1) being provided with a fixed cylinder (2), the fixed cylinder (2) being provided with a feed port and a discharge port, a screw conveying shaft (3) being rotatably connected inside the fixed cylinder (2), and the mounting frame (1) being provided with a weighing module (4); A housing (5) is fixedly connected to the mounting frame (1), the housing (5) is equipped with a motor (6), the output shaft of the motor (6) is fixedly connected to a first spline rod (601), the first spline rod (601) is spline-connected to a rotating shaft (7), a rotating plate (8) is rotatably connected inside the housing (5), and the rotating plate (8) is fixedly connected to the screw conveying shaft (3); a first limiting ring (9) rotatably connected to the rotating plate (8), a first limiting block (10) being provided on the rotating shaft (7), the first limiting block (10) being used to limit the first limiting ring (9); a rotating shell (22) being spline-connected to the rotating shaft (7), the rotating shell (22) being rotatably connected to the housing (5), the rotating shell (22) being fixedly connected to a first gear (23), and an arc-shaped rack (2301) being fixedly connected to the inner circumference of the rotating shell (22); A detection component is arranged on the rotating plate (8) and is used to detect the resistance experienced by the spiral conveying shaft (3).

2. The anti-blocking quantitative feeder for sodium sulfite production according to claim 1, characterized in that: The detection component comprises: An arc-shaped shell (11) is fixedly connected to the rotating plate (8), an arc-shaped rod (12) is slidably connected inside the arc-shaped shell (11), and a first elastic member is fixedly connected between the two, and the arc-shaped rod (12) is fixedly connected to the first limiting ring (9); A fixed shell (13) is fixedly connected to the housing (5); a sliding rod (14) is slidably connected inside the fixed shell (13); a sliding plate (15) is sealingly slidably connected inside the fixed shell (13); a second elastic member is fixedly connected between the sliding plate (15) and the sliding rod (14); and the sliding rod (14) is rotationally connected to the rotating shaft (7) in a limited manner; A first elastic telescopic rod (16) is fixedly connected to the housing (5); the sliding rod (14) is provided with two limiting grooves, and the first elastic telescopic rod (16) is used to limit the limiting grooves of the sliding rod (14); A transmission assembly is arranged in the housing (5) and is used to control the movement of the sliding plate (15).

3. The anti-blocking quantitative feeder for sodium sulfite production according to claim 2, characterized in that: The first elastic member sliding between the arc-shaped rod (12) and the arc-shaped shell (11) is in a force storage state.

4. The anti-blocking quantitative feeder for sodium sulfite production according to claim 2, characterized in that: The elastic coefficient of the second elastic member between the sliding plate (15) and the sliding rod (14) is smaller than the elastic coefficient of the first elastic member between the arc-shaped shell (11) and the arc-shaped rod (12).

5. The anti-blocking quantitative feeder for sodium sulfite production according to claim 2, characterized in that: The transmission assembly comprises: An elastic oil bag (17) is arranged in the arc-shaped shell (11), and the elastic oil bag (17) is fixedly connected to the arc-shaped rod (12); A first oil guide housing (18) is connected to the rotating shaft (7) in a sealing and rotatable manner. A first oil delivery pipe is connected between the first oil guide housing (18) and the elastic oil bag (17). The rotating shaft (7) is connected to a second oil guide housing (19) in a sealing and rotatable manner. A cavity is provided in the rotating shaft (7). Both the first oil guide housing (18) and the second oil guide housing (19) are connected to the cavity of the rotating shaft (7). A second oil delivery pipe is connected between a side of the fixed housing (13) close to the sliding plate (15) and the second oil guide housing (19). The sliding plate (15) is located between the second oil delivery pipe of the fixed housing (13) and the sliding rod (14). The second oil guide housing (19) is connected to the housing (5) in a limited sliding manner. A fixed plate (20) is fixedly connected to the cavity of the rotating shaft (7), and a first oil guide hole and a second oil guide hole are formed on the fixed plate (20). The fixed plate (20) is located between the cavity of the rotating shaft (7) and the connecting point between the first oil guide shell (18) and the second oil guide shell (19), and a one-way valve is provided in the first oil guide hole of the fixed plate (20).

6. The anti-blocking quantitative feeder for sodium sulfite production according to claim 5, characterized in that: The flow rate of the one-way valve on the fixed plate (20) is greater than the flow rate of the second oil guide hole of the fixed plate (20).

7. The anti-blocking quantitative feeder for sodium sulfite production according to claim 5, characterized in that: The transmission assembly also includes: A support plate (25) is fixedly connected to the housing (5); the support plate (25) is rotatably connected to a rotating rod (26); the rotating rod (26) is fixedly connected to a second gear (27); the first gear (23) and the arc-shaped rack (2301) are both used to drive the second gear (27) to rotate; A second limiting ring (28) is rotatably connected to the support plate (25); a transmission member is provided between the second limiting ring (28) and the rotating rod (26); a disk (29) is rotatably connected to the rotating shaft (7); a plurality of transmission telescopic rods (30) are provided between the disk (29) and the rotating plate (8); the disk (29) is provided with a second limiting block (31); the second limiting block (31) is used for limiting the second limiting ring (28); the disk (29) is fixedly connected to the first oil guide housing (18).

8. The anti-blocking quantitative feeder for sodium sulfite production according to claim 1, characterized in that: Also includes: A sliding block (32), wherein a chamber is arranged in the spiral conveying shaft (3), wherein the sliding block (32) is slidably connected in the chamber of the spiral conveying shaft (3), wherein the sliding block (32) is fixedly connected with a spiral plate (33), wherein the spiral plate (33) slides in the chamber of the spiral conveying shaft (3), wherein the spiral conveying shaft (3) is provided with a spiral groove, and wherein the spiral plate (33) is used to block the spiral groove of the spiral conveying shaft (3); A plurality of scrapers (34) are fixedly connected to the spiral plate (33). The scrapers (34) pass through the spiral groove of the spiral conveying shaft (3) and slide along the spiral groove of the spiral conveying shaft (3). The spiral plate (33) is used to clean the spiral conveying shaft (3).

9. The anti-blocking quantitative feeder for sodium sulfite production according to claim 8, characterized in that: Also includes: A support member (35) is fixedly connected to a side of the fixed cylinder (2) close to the discharge port. The support member (35) is rotatably connected to a rotating block (36). The rotating block (36) is fixedly connected to a second spline rod (37). The sliding block (32) is provided with a one-way rotating wheel (38). The sliding block (32) is provided with a through hole. The second spline rod (37) passes through the through hole of the sliding block (32) and is spline-connected to the one-way rotating wheel (38). A third elastic member is fixedly connected between the rotating block (36) and the one-way rotating wheel (38).

10. The anti-blocking quantitative feeder for sodium sulfite production according to claim 9, characterized in that: Also includes: The second elastic telescopic rod (39) is arranged on the one-way rotating wheel (38), and a plurality of limiting holes are arranged on the support member (35). The limiting holes on the support member (35) are used to limit the telescopic end of the second elastic telescopic rod (39), and the support member (35) and the telescopic end of the second elastic telescopic rod (39) are magnetically attracted to each other.

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