Mineral particle feeding device for waterproof roll production

Abstract

The application relates to a mineral particle feeding device for waterproof roll production, and relates to the field of waterproof roll production equipment.The device comprises a receiving table for receiving a particle bag, an opening is arranged in the middle of the receiving table for allowing the particle bag to pass through, a dustproof hopper is fixedly arranged below the receiving table, and the bag opening of the particle bag is located in the dustproof hopper; a discharging pipe is communicated with the bottom of the dustproof hopper, the discharging pipe is used for guiding raw materials in the particle bag into a feeding hopper, and a limiting assembly for limiting the position of the bag opening is arranged in the dustproof hopper. The dustproof hopper receives the bag opening, prevents the bag opening from being excessively opened to generate a large amount of dust, and also shields the bag opening to a certain extent to prevent dust from spreading; the limiting assembly limits the position of the bag opening in the dustproof hopper, prevents the bag opening from shaking or shifting during discharging to generate a large amount of dust, the dustproof hopper and the limiting assembly are matched, dust generation and spreading during discharging are effectively reduced, the amount of dust in a workshop is reduced, and the environment of the workshop is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of waterproof roll production equipment, in particular to a mineral particle feeding device for waterproof roll production. BACKGROUND

[0002] The waterproof roll is mainly used for building walls, roofs, tunnels and roads, and can resist rainwater and low water seepage. The waterproof roll is made of asphalt or high polymer waterproof material impregnated in the matrix, and is provided in the form of a roll, which is called a waterproof roll. There are many types of waterproof rolls, and the raw materials for producing the rolls are different according to different requirements. At present, in order to replace the isolating film in the waterproof roll structure and improve the anti-aging effect, slate and other mineral particles are often used as one of the raw materials.

[0003] The slate is generally contained in a large mineral particle bag, and in the production process, workers need to open the bag opening of the particle bag and pour the raw material in the particle bag into the feeding hopper of the waterproof roll production equipment. However, a large amount of dust will be generated in the process of pouring the mineral particles into the feeding hopper, which will affect the workshop environment. SUMMARY

[0004] In order to reduce the dust in the workshop, the application provides a mineral particle feeding device for waterproof roll production.

[0005] The mineral particle feeding device for waterproof roll production provided by the application adopts the following technical scheme:

[0006] The mineral particle feeding device for waterproof roll production comprises a receiving table for receiving a particle bag, an opening for allowing the particle bag to pass through is arranged in the middle of the receiving table, a dustproof hopper is fixedly arranged below the receiving table, and the bag opening of the particle bag is located in the dustproof hopper; a discharging pipe is communicated with the bottom of the dustproof hopper, the discharging pipe is used for guiding the raw material in the particle bag into a feeding hopper, and a limiting assembly for limiting the position of the bag opening is arranged in the dustproof hopper.

[0007] By adopting the above technical scheme, the pellet bag containing raw materials is placed on the receiving table, the bag opening of the pellet bag is passed through the opening of the receiving table, then the bag opening is placed in the dustproof hopper, and the position of the bag opening is limited by the limiting assembly; when discharging, the raw materials fall into the dustproof hopper from the bag opening, and then fall into the feed hopper of the waterproof roll production equipment through the discharging pipe. The dustproof hopper plays a role in receiving the bag opening, preventing the bag opening from being opened too large to generate a large amount of dust, and also shielding the bag opening to a certain extent to prevent dust from spreading; and the limiting assembly limits the position of the bag opening in the dustproof hopper, preventing the bag opening from shaking or shifting during discharging to generate a large amount of dust; the dustproof hopper cooperates with the limiting assembly to effectively reduce the generation and spread of dust during discharging, reduce the amount of dust in the workshop, and improve the environment of the workshop.

[0008] Further, a fixed pipe is fixedly arranged in the dustproof hopper, the bag opening of the pellet bag is sleeved on the fixed pipe, the fixed pipe is located above the discharging pipe and communicates with the discharging pipe, and a gap for the raw materials to fall is formed between the fixed pipe and the inner wall of the dustproof hopper; the limiting assembly is used to abut the pellet bag against the fixed pipe.

[0009] Further, the limiting assembly comprises a sliding rod, an abutting block and an elastic member, the sliding rod is arranged in the dustproof hopper, the abutting block is fixedly arranged at one end of the sliding rod close to the fixed pipe, the elastic member is used to drive the abutting block to move close to the fixed pipe to abut the pellet bag against the fixed pipe, and at least two groups of the limiting assembly are arranged along the circumference of the fixed pipe.

[0010] Further, a hinged rod is hinged to the dustproof hopper, the sliding rod is slidably sleeved on the hinged rod, a hinged hole is formed in the side wall of the dustproof hopper, the hinged rod is arranged in the hinged hole, one end of the hinged rod extends out of the dustproof hopper through the hinged hole, and a reset member is arranged on the outer wall of the dustproof hopper and used to drive the end of the hinged rod extending out of the dustproof hopper to deflect upward; a driving assembly is arranged on the dustproof hopper and used to drive the fixed pipe to deflect upward.

[0011] Further, the driving assembly comprises a plurality of pull ropes and a swivel ring, each pull rope corresponds to each hinged rod, and the swivel ring is rotatably sleeved on the discharging pipe, one end of each pull rope is fixedly connected with the swivel ring, and the other end is fixedly connected with the end of the hinged rod extending out of the dustproof hopper.

[0012] By adopting the technical scheme, the pull rope is pulled to move the hinge rod to deflect the end of the hinge rod outside the dustproof hopper downward, and then the hinge rod drives the sliding rod and the abutting block to deflect upward, so that the abutting block is away from the fixed tube, at this time, the bag opening of the granular bag can be sleeved on the fixed tube. After the granular bag is sleeved, the rotating ring is rotated again, the pull rope is relaxed, and under the action of the reset member, the hinge rod outside the dustproof hopper deflects upward to reset, drives the entire sliding rod and the abutting block to deflect downward, until the abutting block abuts the granular bag on the fixed tube, and the limiting of the bag opening is completed.

[0013] Further, a plurality of tooth grooves are formed on the rotating ring along the circumference of the rotating ring, a gear is rotatably arranged on the discharge pipe, and the gear is engaged with the tooth grooves; a worm wheel is coaxially arranged on the gear, and a worm is rotatably arranged on the discharge pipe, and the worm is engaged with the worm wheel.

[0014] By adopting the technical scheme, when the granular bag is installed, the worm is rotated by holding the handle, the worm wheel is driven to rotate, the gear is driven to rotate by the worm wheel, and then the rotating ring is rotated, the pull rope is pulled to move by the rotating ring, so that the end of the hinge rod outside the dustproof hopper deflects downward, and then the hinge rod drives the sliding rod and the abutting block to deflect upward, so that the abutting block is away from the fixed tube, at this time, the bag opening of the granular bag can be sleeved on the fixed tube. The worm wheel and the worm cooperate to limit the position of the abutting block, keep the state of being away from the fixed tube, and facilitate the granular bag to be smoothly sleeved on the fixed tube.

[0015] Further, the side wall of the abutting block close to the fixed tube is arranged as an arc surface, and the distance from the arc surface to the fixed tube gradually decreases from the upper end to the lower end of the arc surface.

[0016] Further, an annular air bag is fixedly arranged on the inner wall of the dustproof hopper, the air bag is arranged along the circumference of the fixed tube, and an air pump for inflating and deflating the air bag is arranged on the dustproof hopper.

[0017] Further, a slot is formed in the side wall of the discharge pipe, and a sealing plate for opening and closing the discharge pipe is slidably arranged in the slot.

[0018] Further, a fixed rod is fixedly arranged on the bottom wall of the receiving table, the dustproof hopper is fixedly arranged on the fixed rod, and a gap exists between the top of the dustproof hopper and the receiving table.

[0019] In summary, the present application has at least one of the following beneficial technical effects:

[0020] 1. The dustproof hopper plays a role in receiving the bag opening, preventing the bag opening from being too large to generate more dust, and also shielding the bag opening to a certain extent to prevent dust from spreading; and the limiting assembly limits the position of the bag opening in the dustproof hopper, preventing the bag opening from shaking or shifting during the discharging process to generate a large amount of dust; the dustproof hopper cooperates with the limiting assembly to effectively reduce the generation and spread of dust during the discharging process, reduce the amount of dust in the workshop, and improve the workshop environment.

[0021] 2. When installing the granular material bag, the worm is rotated by holding the handle, the worm wheel is driven to rotate, the gear is driven to rotate by the worm wheel, and the rotating ring is rotated, the rotating ring pulls the pull rope to move, so that the pull rope pulls the hinged rod to deflect downward at the end of the dustproof hopper, and then the hinged rod drives the sliding rod and the abutting block to deflect upward, so that the abutting block is away from the fixed tube, at this time, the bag opening of the granular material bag can be sleeved on the fixed tube. The worm cooperates with the worm wheel to limit the position of the abutting block and keep it away from the fixed tube, so that the granular material bag can be smoothly sleeved on the fixed tube.

[0022] 3. When the air pump inflates the air bag, the air bag expands to seal the gap between the fixed tube and the dustproof hopper, further preventing dust from spreading from the upper end of the dustproof hopper. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0024] Figure 2 is a schematic diagram of part of the structure of the embodiment of the present application;

[0025] Figure 3 is a cross-sectional view of the dustproof hopper of the embodiment of the present application;

[0026] Figure 4 is a cross-sectional view of the hinged rod and the sliding rod of the embodiment of the present application.

[0027] BRIEF DESCRIPTION OF DRAWINGS: 1, receiving table; 11, support; 12, fixed rod; 2, granular material bag; 3, dustproof hopper; 31, discharging pipe; 311, sealing plate; 3111, handle groove; 32, fixed tube; 321, support rod; 33, hinge hole; 34, fixed block; 341, tension spring; 35, guide ring; 36, air bag; 37, air pump; 4, limiting assembly; 41, sliding rod; 411, guide groove; 42, abutting block; 421, arc surface; 43, elastic member; 5, hinged rod; 51, limiting block; 6, driving assembly; 61, pull rope; 62, rotating ring; 621, gear slot; 7, ear plate; 71, gear; 72, worm wheel; 73, worm; 74, handle. DETAILED DESCRIPTION

[0028] The following will be described in detail in combination with the accompanying Figures 1-4 The present application will be further described in detail.

[0029] The embodiment of the present application discloses a mineral particle feeding device for waterproof roll production.

[0030] With reference to Figure 1 The mineral particle feeding device for waterproof roll production comprises a receiving table 1 for receiving a particle bag 2, a support 11 is fixedly arranged at the bottom of the receiving table 1, the receiving table 1 is located above a feeding hopper of a waterproof roll production device, a particle bag 2 filled with raw materials such as schist is placed on the receiving table 1, and the particle bag 2 is made of a cloth bag.

[0031] With reference to Figure 1 And Figure 2 An opening for the particle bag 2 to pass through is arranged at the middle of the receiving table 1, the size of the opening is smaller than the diameter of the particle bag 2, so that the whole particle bag 2 cannot fall off from the opening. A dustproof hopper 3 is fixedly arranged below the receiving table 1, the bag opening of the particle bag 2 is located in the dustproof hopper 3, the bottom of the dustproof hopper 3 is communicated with a discharging pipe 31, the discharging pipe 31 is used for guiding the raw materials in the particle bag 2 into the feeding hopper, and the discharging pipe 31 is located directly above the feeding hopper.

[0032] With reference to Figure 1 And Figure 2 A fixing rod 12 is fixedly arranged at the bottom wall of the receiving table 1, the dustproof hopper 3 is fixedly arranged on the fixing rod 12, and a gap is formed between the top of the dustproof hopper 3 and the receiving table 1. The particle bag 2 is exposed, and if the raw materials are blocked, workers can squeeze the particle bag 2 between the dustproof hopper 3 and the receiving table 1, so that the raw materials can be smoothly discharged.

[0033] With reference to Figure 2 A slot is formed in the side wall of the discharging pipe 31, a sealing plate 311 for opening and closing the discharging pipe 31 is slidably arranged in the slot, the sealing plate 311 is horizontally arranged, a handle slot 3111 is arranged at the end of the sealing plate 311 extending out of the discharging pipe 31, so that workers can pull or push the sealing plate 311.

[0034] With reference to Figure 2 And Figure 3The fixed tube 32 is vertically arranged and circular, the bag opening of the granular bag 2 is sleeved on the fixed tube 32, the bottom of the fixed tube 32 is fixedly provided with a supporting rod 321, and the supporting rod 321 is fixedly connected with the dustproof hopper 3. The fixed tube 32 is located above the discharging pipe 31 and communicates with the discharging pipe 31, there is a certain distance between the bottom of the fixed tube 32 and the discharging pipe 31, and there is a gap between the fixed tube 32 and the inner wall of the dustproof hopper 3 for the falling of raw materials; during the discharging process, part of the raw materials inevitably leaks out from the gap between the granular bag 2 and the fixed tube 32, and the part of the raw materials directly falls into the discharging pipe 31 along the dustproof hopper 3, so that the raw materials in the dustproof hopper 3 are prevented from being accumulated. Meanwhile, the setting of the fixed tube 32 makes most of the raw materials fall through the fixed tube 32, reduces the raw materials in the dustproof hopper 3, and further reduces the effect of dust spreading out of the dustproof hopper 3.

[0035] With reference to Figure 3 and Figure 4 , the dustproof hopper 3 is provided with a limiting assembly 4 for limiting the position of the bag opening, the limiting assembly 4 is used for abutting the granular bag 2 against the fixed tube 32, and the limiting assembly 4 comprises a sliding rod 41, an abutting block 42 and an elastic piece 43. The limiting assembly 4 is arranged in at least two groups along the circumference of the fixed tube 32, the sliding rod 41 is arranged in the dustproof hopper 3, the abutting block 42 is fixedly arranged at one end of the sliding rod 41 close to the fixed tube 32, the side wall of the abutting block 42 close to the fixed tube 32 is provided with an arc-shaped surface 421, the arc-shaped surface 421 is matched with the pipe wall of the fixed tube 32, so as to increase the contact area of the abutting block 42 and the fixed tube 32; and the distance from the arc-shaped surface 421 to the fixed tube 32 gradually decreases from the upper end to the lower end of the arc-shaped surface 421, so that the abutting block 42 is gradually abutted against the fixed tube 32 during the downward deflection of the abutting block 42, and the abutting block 42 can smoothly separate from the granular bag 2 during the upward deflection of the abutting block 42.

[0036] With reference to Figure 2 and Figure 3 , the dustproof hopper 3 is hingedly connected with a hinge rod 5, the sliding rod 41 is slidably sleeved on the hinge rod 5, and the elastic piece 43 is used for driving the abutting block 42 to move close to the fixed tube 32, so as to abut the granular bag 2 against the fixed tube 32. The elastic piece 43 is arranged as a compression spring, a sliding groove is formed in the sliding rod 41, the compression spring is arranged in the sliding groove, one end of the compression spring abuts against the bottom wall of the sliding groove, and the other end abuts against one end of the hinge rod 5 extending into the sliding rod 41.

[0037] With reference to Figure 3 and Figure 4To prevent the slide rod 41 from detaching from the hinge rod 5, a guide groove 411 is provided on the inner wall of the slide rod 41 along the axial direction of the slide rod 41. A limit block 51 is fixedly provided on the side wall of the hinge rod 5. The limit block 51 is slidably connected to the guide groove 411. The end of the guide groove 411 near the slide rod 41 and away from the fixed tube 32 is closed. When the limit block 51 abuts against the side wall of the guide groove 411 away from the fixed tube 32, the position of the slide rod 41 is limited, which serves to prevent the slide rod 41 from detaching from the hinge rod 5.

[0038] Reference Figure 2 and Figure 3 A hinge hole 33 is provided on the side wall of the dust hopper 3. The hinge rod 5 passes through the hinge hole 33, and the rotation center of the hinge rod 5 is located in the hinge hole 33. One end of the hinge rod 5 extends out of the dust hopper 3 through the hinge hole 33. A reset member is provided on the outer wall of the dust hopper 3 to drive the end of the hinge rod 5 extending out of the dust hopper 3 to deflect upward. A fixing block 34 is fixedly provided on the outer wall of the dust hopper 3. The reset member is a tension spring 341. One end of the tension spring 341 is fixedly connected to the fixing block 34, and the other end is fixedly connected to the end of the hinge rod 5 extending out of the dust hopper 3. The tension spring 341 drives the end of the hinge rod 5 extending out of the dust hopper 3 to deflect upward.

[0039] Reference Figure 2 and Figure 3 The dust hopper 3 is equipped with a drive assembly 6 for driving the fixed tube 32 to deflect upwards. The drive assembly 6 includes a pull rope 61 and a rotating ring 62. Multiple pull ropes 61 are provided, each corresponding to a hinge rod 5. The rotating ring 62 is rotatably sleeved on the feed tube 31. One end of the pull rope 61 is fixedly connected to the rotating ring 62, and the other end is fixedly connected to the end of the hinge rod 5 extending out of the dust hopper 3. A guide ring 35 is fixedly installed on the side wall of the dust hopper 3 directly below the hinge rod 5. The pull rope 61 passes through the guide ring 35 and is fixedly connected to the rotating ring 62.

[0040] Reference Figure 2 and Figure 3 The rotating ring 62 has several grooves 621 along its circumference. A gear 71 is rotatably mounted on the feed tube 31, meshing with the grooves 621. An ear plate 7 is fixedly mounted on the side wall of the feed tube 31, and the gear 71 is rotatably mounted on the ear plate 7. A worm gear 72 is coaxially mounted on the gear 71, rotatably mounted on the ear plate 7. A worm 73 is rotatably mounted on the feed tube 31, meshing with the worm gear 72. A handle 74 is fixedly mounted on one end of the worm 73.

[0041] Among them, reference Figure 2 and Figure 3The inner wall of the dustproof hopper 3 is fixedly provided with an annular air bag 36, the air bag 36 is arranged along the circumferential direction of the fixed tube 32, the dustproof hopper 3 is provided with an air pump 37 for inflating and deflating the air bag 36, and the air pump 37 is in communication with the air bag 36. The air bag 36 is located below the sliding rod 41, when the air pump 37 inflates the air bag 36, the air bag 36 expands, seals the gap between the fixed tube 32 and the dustproof hopper 3, and further prevents dust from spreading from the upper end of the dustproof hopper 3. Specifically, the side wall of the air bag 36 is fixedly connected with the inner wall of the dustproof hopper 3, and the side of the air bag 36 away from the dustproof hopper 3 is not connected with the fixed tube 32, when the air bag 36 is deflated, the air bag 36 is separated from the state of abutting against the fixed tube 32, so that the granular material bag 2 can be smoothly installed. The lowermost end of the air bag 36 is located above the fixed tube 32, and after the granular material bag 2 is sleeved on the fixed tube 32, the bag opening is located below the lowermost end of the air bag 36, so that the raw materials leaked from the gap between the granular material bag 2 and the fixed tube 32 are located below the air bag 36, and the dustproof effect is guaranteed.

[0042] The implementation principle of the embodiment of the present application is that the granular material bag 2 containing raw materials is placed on the receiving table 1, the bag opening of the granular material bag 2 is passed through the opening of the receiving table 1, and then the bag opening is placed in the dustproof hopper 3, and the position of the bag opening is limited by the limiting assembly 4. Specifically, by holding the handle 74, rotating the worm 73, driving the worm wheel 72 to rotate, driving the gear 71 to rotate through the worm wheel 72, and then rotating the rotating ring 62, the rotating ring 62 drives the pull rope 61 to move, so that the pull rope 61 drives the one end of the articulated rod 5 extending out of the dustproof hopper 3 to deflect downward, and then the articulated rod 5 drives the sliding rod 41 and the abutting block 42 to deflect upward, so that the abutting block 42 is away from the fixed tube 32, at this time, the bag opening of the granular material bag 2 can be sleeved on the fixed tube 32. The worm wheel 72 cooperates with the worm 73 to limit the position of the abutting block 42, and keep the state of being away from the fixed tube 32, so as to facilitate the granular material bag 2 to be smoothly sleeved on the fixed tube 32. After the granular material bag 2 is sleeved, the worm 73 is rotated again, so that the pull rope 61 is relaxed, and under the action of the tension spring 341, the articulated rod 5 extending out of the dustproof hopper 3 deflects upward to reset, drives the entire sliding rod 41 and the abutting block 42 to deflect downward, until the abutting block 42 abuts the granular material bag 2 on the fixed tube 32, and the limiting of the bag opening is completed.

[0043] When discharging, the raw materials fall from the bag opening into the dustproof hopper 3, and then fall into the feeding hopper of the waterproof coiled material production equipment through the discharging pipe 31. The dustproof hopper 3 serves to receive the bag opening, prevent the bag opening from being opened too large to generate too much dust, and also shield the bag opening to a certain extent to prevent dust from spreading; and the limiting assembly 4 limits the position of the bag opening in the dustproof hopper 3, prevents the bag opening from shaking or shifting during discharging to generate a large amount of dust; the dustproof hopper 3 cooperates with the limiting assembly 4 to effectively reduce the generation and spread of dust during discharging, reduce the amount of dust in the workshop, and improve the environment of the workshop.

[0044] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A mineral granule feeding device for waterproof membrane production, characterized in that: The system includes a receiving platform (1) for receiving granule bags (2), with an opening in the middle for the granule bags (2) to pass through. A dust hopper (3) is fixedly installed below the receiving platform (1), and the opening of the granule bag (2) is located inside the dust hopper (3). A discharge pipe (31) is connected to the bottom of the dust hopper (3), which is used to guide the raw material in the granule bag (2) into the feed hopper. A limiting component (4) for limiting the position of the bag opening is installed inside the dust hopper (3). A fixing pipe (32) is fixedly installed inside the dust hopper (3), and the granule bag (2) is... The bag opening is fitted onto the fixed tube (32), which is located above and connected to the discharge tube (31). A gap exists between the fixed tube (32) and the inner wall of the dust hopper (3) for the raw material to fall. The limiting component (4) is used to press the granular bag (2) against the fixed tube (32). The limiting component (4) includes a sliding rod (41), an abutting block (42), and an elastic element (43). The sliding rod (41) is located inside the dust hopper (3), and the abutting block (42) is fixedly located at one end of the sliding rod (41) near the fixed tube (32). The elastic element (43) is used to drive the abutment block (42) to move closer to the fixed tube (32) to press the granule bag (2) against the fixed tube (32). The limiting component (4) is provided in at least two sets along the circumference of the fixed tube (32). The dust hopper (3) is hinged with a hinge rod (5). The slide rod (41) is slidably sleeved on the hinge rod (5). The side wall of the dust hopper (3) is provided with a hinge hole (33). The hinge rod (5) passes through the hinge hole (33), and one end of the hinge rod (5) extends out of the dust hopper (3) through the hinge hole (33). A reset component is provided on the wall to drive the end of the hinge rod (5) extending out of the dust hopper (3) to deflect upward; a drive assembly (6) is provided on the dust hopper (3) to drive the fixed tube (32) to deflect upward; the drive assembly (6) includes a pull rope (61) and a rotating ring (62), the pull rope (61) is provided in multiple places, and each pull rope (61) corresponds to each hinge rod (5), the rotating ring (62) is rotatably sleeved on the feed tube (31), one end of the pull rope (61) is fixedly connected to the rotating ring (62), and the other end is fixedly connected to the end of the hinge rod (5) extending out of the dust hopper (3).

2. The mineral granule feeding device for waterproof membrane production according to claim 1, characterized in that: The rotating ring (62) has a plurality of toothed grooves (621) along its circumference. A gear (71) is rotatably mounted on the feed tube (31), and the gear (71) meshes with the toothed grooves (621). A worm gear (72) is coaxially mounted on the gear (71), and a worm (73) is rotatably mounted on the feed tube (31), and the worm (73) meshes with the worm gear (72).

3. The mineral granule feeding device for waterproof membrane production according to claim 1, characterized in that: The side wall of the abutment block (42) near the fixed tube (32) is set as an arc-shaped surface (421), and the distance from the arc-shaped surface (421) to the fixed tube (32) gradually decreases from the upper end to the lower end of the arc-shaped surface (421).

4. The mineral granule feeding device for waterproof membrane production according to claim 1, characterized in that: The inner wall of the dust hopper (3) is fixedly provided with an annular airbag (36), the airbag (36) is arranged along the circumference of the fixed tube (32), and the dust hopper (3) is provided with an air pump (37) for inflating and deflating the airbag (36).

5. A mineral granule feeding device for waterproof membrane production according to claim 1, characterized in that: The side wall of the feed pipe (31) is provided with a slot, and a sealing plate (311) for opening and closing the feed pipe (31) is slidably inserted in the slot.

6. The mineral granule feeding device for waterproof membrane production according to claim 1, characterized in that: The bottom wall of the receiving platform (1) is fixedly provided with a fixing plate, and the dust hopper (3) is fixedly provided on the fixing plate. There is a gap between the top of the dust hopper (3) and the receiving platform (1).

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