A mortar mixing and stirring device for gob-side entry retaining and its usage method

Abstract

The present invention relates to the technical field of mortar mixing, and specifically to a mortar mixing and stirring device for gob-side entry retaining and its use method. The present invention includes a ring body, and a stirring barrel is rotatably installed inside the ring body. The two ends of the stirring barrel are respectively rotatably connected to the inner walls of the two ends of the ring body. A spiral plate and a spiral end plate are arranged inside the stirring barrel. Both ends of the spiral plate are fixedly connected with spiral end plates. One end of the top of the ring body is provided with a water pump for supplying water to the stirring barrel. Through the spiral plate and the spiral end plate, the inner wall of the stirring barrel is effectively scraped. On the one hand, it can effectively clean the inner wall of the stirring barrel to prevent the problem of sedimentation and caking of mortar on the inner wall of the stirring barrel. On the other hand, it can also stir the mortar inside the stirring barrel through the spiral plate and the spiral end plate, so that the mortar can be effectively stirred when it is transported to the gob-side entry retaining area in the mine.

Description

Technical Field

[0001] The present invention relates to the field of mortar mixing, and specifically to a mortar mixing and stirring device for gob-side entry retaining and its usage method. Background Art

[0002] Gob-side entry retaining is to maintain the original return airway along the edge of the goaf behind the coal mining face. In order to recover the protective coal pillars left in the traditional mining method. When leaving coal pillars, in order to ensure the stability of the coal pillars, mortar is often used for pouring.

[0003] For example: In the patent with the publication number CN214741452U, a gob-side entry retaining filling device is disclosed, which includes a simulation component, a working component and a base component, and the traveling mechanism is matched with the frame, having the advantages of realizing the mechanization of gob-side entry retaining filling and reducing the working cost of gob-side entry retaining filling.

[0004] However, the devices such as those in "CN214741452U" still have certain defects when in use. Mortar often needs to be stirred during use, and the stirring of mortar is often carried out by a mixer truck outside the mine, and then the stirred mortar is transported to the mine for use. However, during the process of transporting the mortar to the place of use, problems such as mortar settlement and hardening often occur, so that the mortar cannot carry out normal filling work due to the reduction of adsorption capacity; secondly, after the mortar is transported to the construction position, when the transportation device returns, the situation of residual mortar coagulating inside the device often occurs. Summary of the Invention

[0005] The purpose of the present invention is to provide a mortar mixing and stirring device for gob-side entry retaining and its usage method to solve the problems raised in the above background art.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A mortar mixing and stirring device for gob-side entry retaining includes a ring body. A stirring barrel is rotatably installed inside the ring body, and both ends of the stirring barrel are rotatably connected to the inner walls at both ends of the ring body. A spiral plate and a spiral end plate are arranged inside the stirring barrel. Both ends of the spiral plate are fixedly connected to the spiral end plate. A water pump for supplying water to the stirring barrel is arranged at one end of the top of the ring body. An elastic boss is arranged outside the side wall of the stirring barrel, and the elastic boss is in movable abutment with the ground. Support blocks are rotatably installed at both ends of the ring body, and wheels are installed at both ends of the bottom of the support blocks in a lifting manner. A discharge hopper is arranged at one end of the stirring barrel away from the water pump, and the discharge hopper is slidably installed on the ring body.

[0008] Preferably, a first chute is provided on the top wall plate at one end of the ring body, an electric slider is slidably connected in the first chute, "U"-shaped connecting rods are fixedly connected to the tops of both ends of the electric slider, a mounting plate is fixedly connected to the end of the connecting rod away from the electric slider, rotating blocks with a "T"-shaped cross-section are fixedly connected to one side of the two mounting plates facing each other, second chutes are provided on the side wall plates of both sides of the discharge hopper, the two rotating blocks are respectively slidably connected in the two second chutes, and an abutting inclined surface for abutting against the side wall of the ring body is provided at one end of the discharge hopper.

[0009] Preferably, a "U"-shaped water tank is provided inside the ring body, both ends of the water tank are respectively located on both sides of the first chute, a water filling port for adding water is provided at the top of the water tank, the input end of a water pump is connected to an input pipe, the input pipe extends to the bottom of the water tank, the output end of the water pump is connected to an output pipe, the end of the output pipe away from the water pump is connected to a water inlet, a water delivery cavity is provided inside the spiral plate, the water inlet is communicated with the water delivery cavity, a fixing plate is fixedly connected to the end of the ring body away from the discharge hopper, the water inlet is provided in a fixing rod, and the fixing rod is fixedly connected to the center of the fixing plate, and the output pipe penetrates through the fixing plate and is communicated with the water inlet.

[0010] Preferably, a fixing ring is provided at the end of the ring body away from the discharge hopper, the fixing ring is fixedly connected to the side wall plates of both sides of the water tank, a rotating frustum is rotatably sleeved inside the fixing ring, the rotating frustum is fixedly connected to one end of the mixing barrel, a fixing rod is rotatably sleeved inside the rotating frustum, a scraping plate is fixedly connected to the end of the fixing rod away from the fixing plate, the scraping plate abuts against the inner wall of the rotating frustum, spiral end plates are fixedly connected to both ends of the scraping plate, the end of the spiral end plate away from the scraping plate is fixedly connected to the spiral plate, and spiral end plates are also fixedly connected to the end of the spiral plate away from the scraping plate, and a connecting plate is fixedly connected to one end of the two spiral end plates away from the scraping plate and facing each other.

[0011] Preferably, water delivery cavities are provided inside both the spiral end plate and the spiral plate, the water delivery cavities provided inside the spiral end plate and the spiral plate are communicated with each other, a plurality of spray nozzles are provided on the wall plates of the spiral end plate and the spiral plate, all the spray nozzles are communicated with the water delivery cavity, a one-way water outlet valve is provided at the end of the spray nozzle away from the water delivery cavity, a collecting groove is provided inside the scraping plate, both ends of the collecting groove are respectively communicated with the water delivery cavities inside the two spiral end plates at the same end inside the mixing barrel, and one side of the collecting groove is communicated with the water inlet.

[0012] Preferably, a discharge frustum is fixedly connected to the end of the mixing barrel away from the fixing plate, a discharge port is provided inside the discharge frustum, the discharge frustum is rotatably sleeved in the inner wall at the end of the ring body away from the fixing plate, the connecting plate is rotatably connected inside the discharge port, a triangular platform is fixedly connected to the end of the connecting plate close to the discharge hopper, the triangular platform is also rotatably connected inside the discharge port, and a cover plate is provided at the end of the discharge port away from the fixing plate, and the cover plate is used to block the discharge port.

[0013] Preferably, a plurality of air cavities are provided on the side wall of the stirring barrel. An elastic convex platform with a "T" - shaped cross - section is slidably connected in the air cavity. An elastic flap is provided at the bottom of the elastic convex platform, and the elastic flap is fixedly connected to the inner bottom wall plate of the air cavity. The center of the bottom of the air cavity is communicated with the inner cavity of the stirring barrel. A one - way air outlet valve is provided at the connection between the air cavity and the stirring barrel. One end of the elastic convex platform away from the elastic flap penetrates through the outer wall of the stirring barrel. A sector plate is fixedly connected to the inner wall of one side of the bottom of the ring body, and the sector plate is in movable abutment with the elastic convex platform.

[0014] Preferably, an air outlet pipe is communicated with one side of the air cavity close to the discharge hopper. The air outlet pipe penetrates through the side wall plate of the stirring barrel close to the discharge hopper. A pressure valve is provided at one end of the air outlet pipe away from the air cavity. An air inlet pipe is communicated with one end of the air cavity close to the fixing plate. The air inlet pipe penetrates through the side wall plate of the stirring barrel close to the fixing plate. A one - way air inlet valve is provided at one end of the air inlet pipe away from the air cavity, and a filter screen is provided at one end of the one - way air inlet valve away from the air inlet pipe.

[0015] Preferably, both ends of the ring body are fixedly connected with electric rotating shafts. The two electric rotating shafts are respectively rotatably sleeved in two support blocks. The bottom ends of both ends of the support block are fixedly connected with the telescopic ends of the telescopic rods. The support block is connected to the bottom plate through the telescopic rod. The fixed ends of the two telescopic rods are respectively fixedly connected to both ends of the top of the bottom plate. Rotating frames are fixedly connected to both ends of the bottom of the bottom plate, and wheels are rotatably connected in the rotating frames.

[0016] A usage method of a mortar mixing and stirring device for gob - side entry retaining includes the following steps:

[0017] Step 1: Move the discharge hopper to one end of the first chute through the electric slider and the first chute, so that the cover plate is no longer blocked by the discharge hopper. Then, rotate the stirring barrel to the vertical state through the telescopic rod and the electric rotating shaft, and then load the mortar stirred by the mixer into the stirring barrel.

[0018] Step 2: After adding the mortar into the stirring barrel, rotate the stirring barrel to the horizontal state through the telescopic rod and the electric rotating shaft, and make the outer wall of the stirring barrel abut against the sleeper on the railway laid in the mine. Then, during the process of transporting the mortar through the wheels, the stirring barrel can also rotate to stir the mortar inside the stirring barrel.

[0019] Step 3: After transporting the mortar to the gob - side entry retaining position, rotate the stirring barrel to the vertical state through the telescopic rod and the electric rotating shaft, move the discharge hopper to the lower part of the discharge port, and then open the cover plate for discharging work.

[0020] Step 4: After discharging, rotate the stirring barrel to the horizontal state, and turn on the water pump. During the return process of the device, clean the inner wall of the stirring barrel through the water flow output by the water pump.

[0021] Advantages of the present invention:

[0022] 1. The present invention effectively scrapes the inner wall of the mixing barrel through the spiral plate and the spiral end plate. On the one hand, it can effectively clean the inner wall of the mixing barrel, preventing the problem of sedimentation and caking of mortar on the inner wall of the mixing barrel. On the other hand, it can also stir the mortar inside the mixing barrel through the spiral plate and the spiral end plate, so that the mortar can be effectively stirred when it is transported to the gob-side entry retaining area in the mine, ensuring that the mortar is still in a uniform state when in use, guaranteeing the quality of the mortar, and avoiding the situation where the adsorption capacity of the mortar decreases due to the long distance between the mixing site outside the mine and the construction site in the mine.

[0023] 2. The present invention inputs water flow into the water delivery cavity through a water pump and sprays it on the inner wall of the mixing barrel. During the return process of the device, the water flow output by the water pump cleans and flushes the inner wall of the mixing barrel through the relative rotation between the spiral plate and the spiral end plate and the mixing barrel during the rotation of the mixing barrel, effectively avoiding the condensation of residual mortar on the inner wall of the mixing barrel.

[0024] 3. The setting of the elastic convex platform in the present invention, on the one hand, the elastic flap applies an upwardly inclined elastic force to the device through the sleeper, making it easier for technicians to push the mixing barrel. On the other hand, when the device has a reverse slip situation, the part of the elastic convex platform that moves outside the air cavity will be engaged with the sector plate, thereby being able to brake the mixing barrel and avoid the reverse slip of the device during the transfer of mortar, reducing the risk of safety accidents caused by reverse slip; secondly, the elastic convex platform can also squeeze the air in the air cavity into the inside of the mixing barrel, effectively increasing the air pressure inside the mixing barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts;

[0026] Figure 1 is the overall structural schematic diagram of the present invention;

[0027] Figure 2 is the bottom view of the overall structure of the present invention;

[0028] Figure 3 is the structural sectional schematic diagram of the mixing barrel of the present invention;

[0029] Figure 4 is the present invention Figure 3 The enlarged schematic diagram of the structure of part A shown;

[0030] Figure 5 is a schematic cross-sectional view of the structure of the electric rotating shaft of the present invention;

[0031] Figure 6 is the present invention Figure 5 a schematic enlarged view of the structure of part B shown;

[0032] Figure 7 is a schematic cross-sectional view of the structure of the fixed rod of the present invention;

[0033] Figure 8 is the present invention Figure 7 a schematic enlarged view of the structure of part C shown;

[0034] Figure 9 is a schematic overall structure view of the discharge hopper of the present invention;

[0035] Figure 10 is a schematic connection structure view of the spiral plate of the present invention;

[0036] Figure 11 is a schematic cross-sectional view of the structure of the input pipe of the present invention;

[0037] The reference numerals in the figure are as follows: 1, ring body; 2, discharge hopper; 3, support block; 4, telescopic rod; 5, bottom plate; 6, wheel; 7, electric rotating shaft; 8, mounting plate; 9, first chute; 10, mixing barrel; 12, water filling port; 13, water pump; 14, output pipe; 15, fixing plate; 16, connecting rod; 17, sector plate; 18, rotating turntable; 19, intake pipe; 20, exhaust pipe; 21, elastic boss; 22, air cavity; 23, elastic flap; 24, discharge turntable; 25, spiral plate; 26, water inlet; 27, fixed rod; 28, water tank; 29, spiral end plate; 30, collecting tank; 31, scraper; 32, one-way air outlet valve; 33, water delivery cavity; 34, cover plate; 35, second chute; 36, abutting inclined surface; 37, triangular platform; 38, connecting plate; 39, fixing ring; 40, input pipe; 41, pressure valve; 42, one-way intake valve. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0039] As Figures 1 - 11As shown in the figure, a mortar mixing and stirring device for gob-side entry retaining includes a ring body 1. A stirring barrel 10 is rotatably installed inside the ring body 1. Both ends of the stirring barrel 10 are rotatably connected to the inner walls at both ends of the ring body 1. A spiral plate 25 and a spiral end plate 29 are arranged inside the stirring barrel 10. Both ends of the spiral plate 25 are fixedly connected to the spiral end plate 29. A water pump 13 for supplying water to the stirring barrel 10 is arranged at one end of the top of the ring body 1. Elastic bosses 21 are arranged outside the side wall of the stirring barrel 10, and the elastic bosses 21 are in movable abutment with the ground. Support blocks 3 are rotatably installed at both ends of the ring body 1. Wheels 6 are installed at both ends of the bottom of the support blocks 3 in a lifting manner. A discharge hopper 2 is arranged at one end of the stirring barrel 10 away from the water pump 13, and the discharge hopper 2 is slidably installed on the ring body 1. The setting of the support blocks 3 enables the device to effectively adjust the stirring barrel 10, so that the stirring barrel 10 can be switched among three states: the discharge port is at the top of the stirring barrel 10, the discharge port is at the bottom of the stirring barrel 10, and the discharge port is on one side of the stirring barrel 10.

[0040] As Figures 1 - 3 and Figures 8 - 9 shown in the figure, a first chute 9 is opened on the top wall plate at one end of the ring body 1. An electric slider is slidably connected in the first chute 9. Both ends of the top of the electric slider are fixedly connected with "U"-shaped connecting rods 16. The end of the connecting rod 16 away from the electric slider is fixedly connected with a mounting plate 8. Rotating blocks with a "T"-shaped cross-section are fixedly connected to the opposite sides of the two mounting plates 8. Second chutes 35 are opened on both side wall plates of the discharge hopper 2, and the two rotating blocks are respectively slidably connected in the two second chutes 35. An abutting inclined surface 36 for abutting against the side wall of the ring body 1 is opened at one end of the discharge hopper 2. The setting of the abutting inclined surface 36 enables the discharge hopper 2 to effectively discharge the mortar in the stirring barrel 10.

[0041] As Figures 1 - 3 , Figure 7 and Figure 11 shown in the figure, a "U"-shaped water tank 28 is opened inside the ring body 1. Both ends of the water tank 28 are located on both sides of the first chute 9 respectively. A water filling port 12 for adding water is arranged at the top of the water tank 28. The input end of the water pump 13 is connected with an input pipe 40, and the input pipe 40 extends to the bottom of the water tank 28. The output end of the water pump 13 is connected with an output pipe 14. The end of the output pipe 14 away from the water pump 13 is connected with a water inlet 26. A water delivery cavity 33 is arranged inside the spiral plate 25, and the water inlet 26 is communicated with the water delivery cavity 33. A fixing plate 15 is fixedly connected to one end of the ring body 1 away from the discharge hopper 2. The water inlet 26 is opened in a fixing rod 27, and the fixing rod 27 is fixedly connected to the center of the fixing plate 15. The output pipe 14 passes through the fixing plate 15 and is communicated with the water inlet 26. The fixing plate 15 can effectively fix the fixing rod 27, the spiral plate 25 and the spiral end plate 29.

[0042] AsFigure 3 , Figures 5 - 6 and Figure 10 As shown in Figures 5 - 6 , Figure 10 , and , at one end of the annular body 1 away from the discharge hopper 2, there is a fixed ring 39. The fixed ring 39 is fixedly connected to the side wall plates of the water tank 28. A rotating frustum 18 is rotatably sleeved inside the fixed ring 39. The rotating frustum 18 is fixedly connected to one end of the mixing barrel 10. A fixed rod 27 is rotatably sleeved inside the rotating frustum 18. One end of the fixed rod 27 away from the fixed plate 15 is fixedly connected to a scraper 31. The scraper 31 abuts against the inner wall of the rotating frustum 18. Both ends of the scraper 31 are fixedly connected to spiral end plates 29. One end of the spiral end plate 29 away from the scraper 31 is fixedly connected to the spiral plate 25. One end of the spiral plate 25 away from the scraper 31 is also fixedly connected to the spiral end plate 29. One end of the two spiral end plates 29 away from the scraper 31 that are close to each other is fixedly connected to a connecting plate 38. The setting of the connecting plate 38 can effectively connect the two spiral end plates 29 away from the scraper 31. At the same time, the triangular platform 37 provided at the end of the connecting plate 38 can also disperse the mortar during the feeding process of the device.

[0043] As Figure 3 , Figures 5 - 6 and Figure 10 As shown in Figure 3 , Figures 5 - 6 , and Figure 10 , water delivery cavities 33 are provided inside both the spiral end plate 29 and the spiral plate 25. The water delivery cavities 33 provided inside the spiral end plate 29 and the spiral plate 25 are interconnected. A plurality of nozzles are provided on the wall plates of the spiral end plate 29 and the spiral plate 25. All the nozzles are connected to the water delivery cavity 33. A water outlet check valve is provided at one end of the nozzle away from the water delivery cavity 33. A collecting groove 30 is provided inside the scraper 31. Both ends of the collecting groove 30 are respectively connected to the water delivery cavities 33 inside the two spiral end plates 29 at the same end inside the mixing barrel 10. One side of the collecting groove 30 is connected to the water inlet 26. During the rotation of the mixing barrel 10, the scraper 31 can effectively scrape the rotating frustum 18 to prevent the mortar from coagulating on the inner wall of the rotating frustum 18.

[0044] As Figure 3 and Figure 7 As shown in Figure 3 and Figure 7 , one end of the mixing barrel 10 away from the fixed plate 15 is fixedly connected to a discharge frustum 24. A discharge port is provided inside the discharge frustum 24. The discharge frustum 24 is rotatably sleeved in the inner wall at one end of the annular body 1 away from the fixed plate 15. The connecting plate 38 is rotatably connected inside the discharge port. One end of the connecting plate 38 close to the discharge hopper 2 is fixedly connected to a triangular platform 37. The triangular platform 37 is also rotatably connected inside the discharge port. A cover plate 34 is provided at one end of the discharge port away from the fixed plate 15. The cover plate 34 is used to block the discharge port. A sealing ring is provided at the connection between the cover plate 34 and the discharge port. The sealing ring is used to seal the mixing barrel 10.

[0045] As Figures 3 - 6As shown in the figure, a plurality of air cavities 22 are provided on the side wall of the stirring barrel 10. An elastic boss 21 with a "T" - shaped cross - section is slidably connected in the air cavity 22. An elastic flap 23 is provided at the bottom of the elastic boss 21, and the elastic flap 23 is fixedly connected to the inner bottom wall plate of the air cavity 22. The center of the bottom of the air cavity 22 is communicated with the inner chamber of the stirring barrel 10. A one - way air outlet valve 32 is provided at the connection between the air cavity 22 and the stirring barrel 10. One end of the elastic boss 21 away from the elastic flap 23 penetrates through the outer wall of the stirring barrel 10. A sector plate 17 is fixedly connected to the inner wall of one side of the bottom of the ring body 1, and the sector plate 17 is in movable abutment with the elastic boss 21. The one - way air outlet valve 32 can only make the gas in the air cavity 22 enter into the stirring barrel 10.

[0046] As Figures 3 - 6 As shown in the figure, an air outlet pipe 20 is communicated with the side of the air cavity 22 close to the discharge hopper 2. The air outlet pipe 20 penetrates through the side wall plate of the stirring barrel 1 along the side close to the discharge hopper 2. A pressure valve 41 is provided at the end of the air outlet pipe 20 away from the air cavity 22. An air inlet pipe 19 is communicated with the end of the air cavity 22 close to the fixing plate 15. The air inlet pipe 19 penetrates through the side wall plate of the stirring barrel 1 along the side close to the fixing plate 15. A one - way air inlet valve 42 is provided at the end of the air inlet pipe 19 away from the air cavity 22. A filter screen is provided at the end of the one - way air inlet valve 42 away from the air inlet pipe 19. The filter screen can effectively prevent external dust and impurities from entering the stirring barrel 10. A pressure preset value is set in the pressure valve 41. When the air pressure in the air cavity 22 is higher than this pressure preset value, the pressure valve 41 opens, and vice versa, the pressure valve 41 closes.

[0047] As Figures 1 - 3 As shown in the figure, electric rotating shafts 7 are fixedly connected to both ends of the ring body 1. The two electric rotating shafts 7 are respectively rotatably sleeved in the two support blocks 3. The telescopic ends of the telescopic rods 4 are fixedly connected to the bottom of both ends of the support block 3. The support block 3 is connected to the bottom plate 5 through the telescopic rod 4. The fixed ends of the two telescopic rods 4 are respectively fixedly connected to both ends of the top of the bottom plate 5. Rotating frames are fixedly connected to both ends of the bottom of the bottom plate 5. Wheels 6 are rotatably connected in the rotating frames. Ring grooves are provided on the sides of the two wheels 6 on the same bottom plate 5 away from each other. The ring grooves are used to abut against the railway tracks. The part of the wheel 6 on the side of the ring groove can be clamped on the railway tracks. This technology is an existing technology and is commonly used on the wheels of trains to prevent trains from derailing.

[0048] A usage method of a mortar mixing and stirring device for gob - side entry retaining includes the following steps:

[0049] Step 1: Move the discharge hopper 2 to one end of the first chute 9 through the electric slider and the first chute 9, so that the cover plate 34 is no longer blocked by the discharge hopper 2. Then, rotate the stirring barrel 10 to a vertical state through the telescopic rod 4 and the electric rotating shaft 7, and then load the mortar stirred by the mixer into the stirring barrel 10.

[0050] Step 2: After adding mortar into the mixing barrel 10, use the telescopic rod 4 and the electric rotating shaft 7 to rotate the mixing barrel 10 to a horizontal state and make the outer wall of the mixing barrel 10 abut against the sleeper laid on the railway track in the mine. Then, during the process of transporting the mortar by the wheel 6, the mixing barrel 10 can also rotate to stir the mortar inside the mixing barrel 10;

[0051] Step 3: After transporting the mortar to the gob-side entry retaining position, use the telescopic rod 4 and the electric rotating shaft 7 to rotate the mixing barrel 10 to a vertical state, move the discharge hopper 2 below the discharge port, and then open the cover plate 34 to carry out the discharging work;

[0052] Step 4: After discharging is completed, rotate the mixing barrel 10 to a horizontal state and turn on the water pump 13. During the return process of the device, clean the inner wall of the mixing barrel 10 with the water flow output by the water pump 13.

[0053] When the present invention is in use, move the discharge hopper 2 to one end of the first chute 9 through the electric slider and the first chute 9, so that the cover plate 34 is no longer blocked by the discharge hopper 2. Then, use the telescopic rod 4 and the electric rotating shaft 7 to rotate the mixing barrel 10 to a vertical state. By extending the telescopic rod 4, the support block 3 moves upward under the drive of the telescopic rod 4, and then the ring body 1 can move upward under the drive of the support block 3. After the ring body 1 rises, by controlling the electric rotating shaft 7 to Figure 1 rotate counterclockwise in the perspective, so that the discharge hopper 2 rotates above the device. At this time, the discharge port is also rotated above the device. Then open the cover plate 34. After opening the cover plate 34, load the mortar stirred by the mixer into the mixing barrel 10. After adding the mortar into the mixing barrel 10, close the cover plate 34.

[0054] After adding mortar into the mixing barrel 10, use the electric rotating shaft 7 to rotate the mixing barrel 10 to a horizontal state. Then, by controlling the telescopic rod 4 to contract, the height of the mixing barrel 10 is reduced. After the height of the mixing barrel 10 is reduced, the outer wall of the mixing barrel 10 will abut against the sleeper laid on the railway track in the mine. During the process of transporting the mortar by the device, the wheel 6 will roll on the railway track in the mine. Then, during the process of transporting the mortar by the wheel 6, the mixing barrel 10 can also rotate to stir the mortar inside the mixing barrel 10. During the process of transporting the mortar by the device, the spiral plate 25 and the spiral end plate 29 arranged inside the mixing barrel 10 will be effectively fixed under the action of the ring body 1. Therefore, the spiral plate 25 and the spiral end plate 29 will not rotate during the rotation of the mixing barrel 10. The mixing barrel 10 rotates relative to the ring body 1 through the rotating frustum 18 and the discharge frustum 24. At the same time, the fixed rod 27 will not rotate either. The inner and outer sides of the rotating frustum 18 rotate relative to the fixed rod 27 and the fixed ring 39 respectively.

[0055] By fixing the spiral plate 25 and the spiral end plate 29, the inner wall of the mixing barrel 10 will rotate relative to the spiral plate 25 and the spiral end plate 29, so that the spiral plate 25 and the spiral end plate 29 can effectively scrape the inner wall of the mixing barrel 10. On the one hand, the inner wall of the mixing barrel 10 can be effectively cleaned to prevent the mortar from settling and hardening on the inner wall of the mixing barrel 10. On the other hand, the mortar inside the mixing barrel 10 can be stirred by the spiral plate 25 and the spiral end plate 29, so that the mortar can be effectively stirred when it is transported to the goaf in the mine. The mortar can still be in a uniform state when in use, ensuring the quality of the mortar and avoiding the situation where the mortar adsorption capacity is reduced due to the mixing point outside the mine being too far away from the construction site in the mine.

[0056] During the rotation of the mixing barrel 10, the elastic boss 21 located on the outside of the mixing barrel 10 will abut against the sleepers between the two rails. When the mixing barrel 10 rotates to the point where the elastic boss 21 abuts against the fan-shaped plate 17, the fan-shaped plate 17 will squeeze the elastic boss 21 into the air cavity 22. When the elastic boss 21 rotates to the bottom of the mixing barrel 10 as the mixing barrel 10 does, the abutment between the elastic boss 21 and the sleeper enables the elastic boss 21 to abut against the sleeper. When the mixing barrel 10 continues to rotate, an angle will appear between the abutment between the elastic boss 21 and the sleeper. Under the action of the elastic paddle 23, the elastic boss 21 can apply an elastic force to the sleeper, and then the elastic paddle 23 applies an elastic force inclined diagonally upward to the device through the sleeper, so that the technician can save more effort when pushing the mixing barrel 10.

[0057] At the same time, the setting of the elastic boss 21 can also prevent the device from sliding back during the movement. Figure 5 When the device rotates clockwise from the perspective of the elastic boss 21, the elastic boss 21 is blocked by the fan-shaped plate 17, so that the resistance when the elastic boss 21 contacts the ground is reduced. Figure 5 When the device is rotated counterclockwise from the perspective of , when the elastic boss 21 abuts against the fan-shaped plate 17, a part of the end of the elastic boss 21 away from the elastic paddle 23 will move outside the air cavity 22. When the device rolls back, the part of the elastic boss 21 that moves out of the air cavity 22 will be engaged with the fan-shaped plate 17, thereby acting as a brake on the mixing barrel 10, preventing the mixing barrel 10 from continuing to rotate, avoiding the device from rolling back during the mortar transfer process, and reducing the risk of safety accidents caused by rolling back.

[0058] During the rotation of the mixing barrel 10, when the elastic flap 23 separates from the sector plate 17, the elastic flap 23 applies a force to the elastic boss 21, causing the elastic flap 23 to move away from the inner wall of the mixing barrel 10. When the elastic boss 21 moves away from the inner wall of the mixing barrel 10, the chamber volume at the bottom of the air chamber 22 and the elastic boss 21 increases. As a result, the air chamber 22 draws air from the outside atmosphere through the intake pipe 19. When the elastic boss 21 abuts against the sector plate 17, the sector plate 17 squeezes the elastic boss 21 towards the inner chamber of the mixing barrel 10. Consequently, the elastic boss 21 squeezes the air in the air chamber 22 into the interior of the mixing barrel 10, effectively increasing the air pressure inside the mixing barrel 10. When the air pressure inside the mixing barrel 10 increases to a certain extent, the air drawn from the outside atmosphere by the inner chamber of the air chamber 22 will leave the air chamber 22 through the outlet pipe 20. When the air pressure inside the mixing barrel 10 is higher than the pressure preset value of the pressure valve 41, the elastic boss 21 discharges the air pressure in the air chamber 22 through the pressure valve 41, preventing the gas in the air chamber 22 from entering the mixing barrel 10 through the one-way outlet valve 32.

[0059] After transporting the mortar to the gob-side entry retaining position, the mixing barrel 10 is rotated in the reverse direction to the vertical state through the telescopic rod 4 and the electric rotating shaft 7, so that the discharge port is located directly below the mixing barrel 10. Subsequently, the discharge hopper 2 is moved to the lower side of the discharge port through the electric slider. By pulling the discharge hopper 2, the abutting inclined surface 36 provided on the discharge hopper 2 abuts against the wall plate of the ring body 1. At this time, one end of the discharge hopper 2 close to the abutting inclined surface 36 is located outside the discharge port, and the end of the discharge hopper 2 far from the abutting inclined surface 36 is located outside the vertical state of the ring body 1. Subsequently, the cover plate 34 is opened for discharging work. During the transportation of the mortar by this device, the air pressure inside the mixing barrel 10 is effectively pressurized under the action of the elastic boss 21. When the cover plate 34 is opened, after the inside of the mixing barrel 10 is pressurized, the air pressure inside the mixing barrel 10 will also promote the mortar to be discharged from the mixing barrel 10 faster, improving the discharging efficiency of this device.

[0060] After discharging is completed, the mixing barrel 10 is rotated to the horizontal state, and then the device is effectively turned around. Then the water pump 13 is turned on. During the return journey of this device, the water pump 13 draws water from the water tank 28. The water flows through the output pipe 14 into the water inlet 26, then enters the water delivery cavity 33 through the collecting trough 30, and finally is sprayed on the inner wall of the mixing barrel 10 through the nozzle. During the return journey of this device, the water output by the water pump 13, during the rotation of the mixing barrel 10, cleans and flushes the inner wall of the mixing barrel 10 through the relative rotation between the spiral plate 25 and the spiral end plate 29 and the mixing barrel 10, effectively preventing the residual mortar from coagulating on the inner wall of the mixing barrel 10.

[0061] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A mortar mixing and stirring device for gob-side tunnel retaining, comprising a ring body (1), characterized in that: A mixing barrel (10) is rotatably mounted inside the ring body (1), and both ends of the mixing barrel (10) are rotatably connected to the inner walls of both ends of the ring body (1). A spiral plate (25) and a spiral end plate (29) are provided inside the mixing barrel (10), and both ends of the spiral plate (25) are fixedly connected to the spiral end plate (29). A water pump (13) for supplying water to the mixing barrel (10) is provided at one end of the top of the ring body (1), and an elastic boss (21) is provided on the outside of the side wall of the mixing barrel (10). The elastic boss (21) is movably abutted against the ground. Support blocks (3) are rotatably mounted at both ends of the ring body (1), and wheels (6) are installed at both ends of the bottom of the support block (3) for lifting. A discharge hopper (2) is provided at one end of the mixing barrel (10) away from the water pump (13), and the discharge hopper (2) is slidably mounted on the ring body (1); A first chute (9) is provided on the top wall panel at one end of the ring body (1), an electric slider is slidably connected in the first chute (9), a "U"-shaped connecting rod (16) is fixedly connected to the top of both ends of the electric slider, an end of the connecting rod (16) away from the electric slider is fixedly connected to a mounting plate (8), and a rotating block with a "T"-shaped cross section is fixedly connected to the two mounting plates (8) on the opposite sides thereof, a second chute (35) is provided on the wall panels on both sides of the discharge hopper (2), and two rotating blocks are respectively slidably connected in the two second chute (35), and an abutting inclined surface (36) for abutting against the side wall of the ring body (1) is provided at one end of the discharge hopper (2); A U-shaped water trough (28) is provided inside the ring body (1), and the two ends of the water trough (28) are respectively located on both sides of the first chute (9). A water inlet (12) for adding water is provided on the top of the water trough (28). The input end of the water pump (13) is connected to an input pipe (40), and the input pipe (40) extends to the bottom of the water trough (28). The output end of the water pump (13) is connected to an output pipe (14), and the output pipe (14) is away from the water pump (13). One end of the ring body (1) is connected to a water inlet (26), a water delivery cavity (33) is provided inside the spiral plate (25), the water inlet (26) is connected to the water delivery cavity (33), one end of the ring body (1) away from the discharge hopper (2) is fixedly connected to the fixed plate (15), the water inlet (26) is provided in the fixed rod (27), the fixed rod (27) is fixedly connected to the center of the fixed plate (15), and the output pipe (14) passes through the fixed plate (15) and is connected to the water inlet (26).

2. A mortar mixing and stirring device for gob-side entry retaining according to claim 1, characterized in that: The end of the ring body (1) away from the discharge hopper (2) is provided with a fixed ring (39), the fixed ring (39) is fixedly connected to the side wall plates of the water tank (28), a rotating table (18) is rotatably sleeved in the fixed ring (39), the rotating table (18) is fixedly connected to one end of the mixing barrel (10), a fixed rod (27) is rotatably sleeved inside the rotating table (18), the end of the fixed rod (27) away from the fixed plate (15) is fixedly connected to a scraper (31), the scraper (31) abuts against the inner wall of the rotating table (18), both ends of the scraper (31) are fixedly connected to spiral end plates (29), the end of the spiral end plate (29) away from the scraper (31) is fixedly connected to the spiral plate (25), the end of the spiral plate (25) away from the scraper (31) is also fixedly connected to the spiral end plate (29), and the ends of the two spiral end plates (29) away from the scraper (31) that are close to each other are fixedly connected to the connecting plate (38).

3. A mortar mixing and stirring device for gob-side entry retaining according to claim 2, characterized in that: A water delivery cavity (33) is provided in each of the spiral end plate (29) and the spiral plate (25). The water delivery cavities (33) provided in the spiral end plate (29) and the spiral plate (25) are communicated with each other. A plurality of nozzles are provided on the wall plates of the spiral end plate (29) and the spiral plate (25). The plurality of nozzles are communicated with the water delivery cavity (33). A water outlet check valve is provided at one end of the nozzle away from the water delivery cavity (33). A collecting groove (30) is provided in the scraper (31). The two ends of the collecting groove (30) are respectively communicated with the water delivery cavities (33) in the two spiral end plates (29) located at the same end inside the mixing barrel (10). One side of the collecting groove (30) is communicated with the water inlet (26).

4. A mortar mixing and stirring device for gob-side entry retaining according to claim 3, characterized in that: The end of the mixing barrel (10) away from the fixed plate (15) is fixedly connected to a discharge truncated plate (24), a discharge port is provided in the discharge truncated plate (24), the discharge truncated plate (24) is rotatably sleeved in the inner wall of the end of the ring body (1) away from the fixed plate (15), the connecting plate (38) is rotatably connected in the discharge port, the end of the connecting plate (38) close to the discharge hopper (2) is fixedly connected to a triangular platform (37), the triangular platform (37) is also rotatably connected in the discharge port, and a cover plate (34) is provided at the end of the discharge port away from the fixed plate (15), the cover plate (34) is used to block the discharge port.

5. The mortar mixing and stirring device for gob-side entry retaining according to claim 4 is characterized in that: The side wall of the mixing barrel (10) is provided with a plurality of air cavities (22), an elastic boss (21) with a T-shaped cross section is slidably connected in the air cavity (22), an elastic paddle (23) is provided at the bottom of the elastic boss (21), the elastic paddle (23) is fixedly connected to the inner bottom wall plate of the air cavity (22), the bottom center of the air cavity (22) is connected to the internal chamber of the mixing barrel (10), a one-way air outlet valve (32) is provided at the connection between the air cavity (22) and the mixing barrel (10), one end of the elastic boss (21) away from the elastic paddle (23) passes through the outer wall of the mixing barrel (10), a fan-shaped plate (17) is fixedly connected to the inner wall of one side of the bottom of the ring body (1), and the fan-shaped plate (17) is movably abutted against the elastic boss (21).

6. A mortar mixing and stirring device for gob-side entry retaining according to claim 5, characterized in that: The air cavity (22) is connected to an air outlet pipe (20) on one side close to the discharge hopper (2), and the air outlet pipe (20) passes through a side wall panel of the mixing barrel (10) close to the discharge hopper (2). A pressure valve (41) is provided at one end of the air outlet pipe (20) away from the air cavity (22). An air inlet pipe (19) is connected to one end of the air cavity (22) close to the fixed plate (15), and the air inlet pipe (19) passes through a side wall panel of the mixing barrel (10) close to the fixed plate (15). A one-way air inlet valve (42) is provided at one end of the air inlet pipe (19) away from the air cavity (22), and a filter is provided at one end of the one-way air inlet valve (42) away from the air inlet pipe (19).

7. The mortar mixing and stirring device for gob-side entry retaining according to claim 6, characterized in that: Both ends of the ring body (1) are fixedly connected to electric rotating shafts (7), and the two electric rotating shafts (7) are respectively rotatably sleeved in the two support blocks (3). The bottoms of both ends of the support blocks (3) are fixedly connected to the telescopic ends of the telescopic rods (4). The support blocks (3) are connected to the bottom plate (5) through the telescopic rods (4). The fixed ends of the two telescopic rods (4) are respectively fixedly connected to the top ends of the bottom plate (5). Both ends of the bottom of the bottom plate (5) are fixedly connected to the rotating frame, and the wheels (6) are rotatably connected in the rotating frame.

8. The method for using the mortar mixing and stirring device for gob-side entry retaining according to claim 7, characterized in that: The method of use includes the following steps: Step 1: Move the discharge hopper (2) to one end of the first chute (9) via the electric slider and the first chute (9) so that the cover plate (34) is no longer blocked by the discharge hopper (2), and then rotate the mixing barrel (10) to a vertical state via the telescopic rod (4) and the electric rotating shaft (7), and then place the mortar mixed by the mixer into the mixing barrel (10); Step 2: After adding mortar into the mixing barrel (10), the mixing barrel (10) is rotated to a horizontal state by the telescopic rod (4) and the electric rotating shaft (7) so that the outer wall of the mixing barrel (10) abuts against the sleepers on the rails laid in the mine, and the mixing barrel (10) is also rotated during the process of conveying the mortar by the wheels (6) to stir the mortar inside the mixing barrel (10); Step 3: After the mortar is transported to the position along the goaf, the mixing barrel (10) is rotated to a vertical state by the telescopic rod (4) and the electric shaft (7), the discharge hopper (2) is moved to the bottom of the discharge port, and then the cover plate (34) is opened to carry out the unloading work; Step 4: After the unloading is completed, the mixing barrel (10) is rotated to a horizontal state and the water pump (13) is turned on. During the return process of the device, the water flow output by the water pump (13) cleans the inner wall of the mixing barrel (10).

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