Novel ultrahigh pressure coal slime blending device

Abstract

The utility model discloses a novel ultrahigh pressure coal slime blending device which comprises a machine frame, a vibration feeding hopper is installed at the upper end of the machine frame, a screw feeder is installed in the middle of the machine frame, a supporting frame is installed on the inner side of the bottom of the machine frame, and a belt conveyor is arranged on the supporting frame. A motor support is installed at the bottom of the vibration feeding hopper and the bottom of the screw feeder, and a first vibration motor and a discharging sealing rubber sheet are installed on the motor support. According to the novel ultrahigh-pressure coal slime blending device disclosed by the utility model, the feeding funnel and the spiral feeder are high in equipment integration level and can be systematically put into use as whole equipment, and the vibration motor is additionally arranged on the feeding funnel, so that the possibility that the funnel is blocked by coal slime is reduced; and the best curve angle can be set according to the property of the coal slime when the feeding funnel is designed, the spiral feeder adopts frequency conversion control, stable and uniform feeding can be realized, the automation degree is high, and data fed back by a matched belt weigher and an ash content meter can be quantitatively adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ultrahigh pressure coal slime blending, in particular to a novel ultrahigh pressure coal slime blending device. BACKGROUND

[0002] The ultrahigh pressure coal slime blending device is a supporting equipment for coal slime blending and conveying, and the coal slime refers to the semi-solid substance formed by the water in the coal powder, which is one of by-products in the current coal wet washing process, and the current mature coal slime dewatering processes include the hot air drying system and the ordinary drum drying method, and the filter pressing, the coal slime as the by-product of the coal washing plant has the adverse characteristics of high moisture, high viscosity, high water retention, high ash content and low calorific value, the comprehensive utilization of the coal slime becomes a big problem, the value of the coal slime is not fully reflected, the drying technology cannot directly treat the concentrated slurry, depends on the heat source, and is greatly affected by the environmental protection policy, the outdoor airing occupies a large area, has a long drying time, is greatly affected by the season, cannot continuously produce, easily produces secondary dust and water environment pollution, the high-temperature flue gas drying technology has poor safety performance, the hot air use is difficult to pass the environmental evaluation and approval, and has been eliminated by the market, and the low-temperature drying technology requires the additional supporting equipment of the heat plant, has high cost, is easily restricted by the energy saving and environmental protection policy, and with the continuous development of the science and technology, the manufacturing process requirements of the ultrahigh pressure coal slime blending device are higher and higher.

[0003] The existing ultrahigh pressure coal slime blending device has certain disadvantages in use, the coal slime after filter pressing has many adverse conditions such as high moisture, high viscosity, high water retention and low calorific value, and direct sales greatly influences the value and benefits thereof;

[0004] The coal slime is stored on the ground, manually loaded into a vehicle, has low automation degree, a poor working environment and serious pollution;

[0005] The coal slime is greatly affected by the seasonal change, the wet coal slime has low sales price and low economic benefits, and influences production when the coal slime is not sold or is difficult to dispose.

[0006] At present, many ultrahigh pressure filter presses have been developed in China, mainly two technical routes, one is water pressure squeezing, and the other is mechanical squeezing, the moisture of the coal slime after filter pressing of the two filter presses can be reduced by 6-10% compared with the total moisture of the ordinary filter press, the coal slime after crushing is in the form of dry powder, has very good blending property, due to the reduction of moisture, the calorific value of the general ultrahigh pressure coal slime is improved, and the ultrahigh pressure coal slime can be blended into the medium coal and the mixed coal for sale. However, at the same time, due to the fine particle size of the ultrahigh pressure coal slime after crushing, the coal slime is in the form of dry powder, and the coal slime after falling to the ground needs to be blended by using the underground warehouse + underground coal feeder or manually worked to the belt conveyor. At present, there is no good online blending device in China, therefore, the novel ultrahigh pressure coal slime blending device is provided. CONTENT OF THE UTILITY MODEL

[0007] The utility model provides a novel superhigh pressure coal slime blending device, and the feeding hopper is integrated with the screw feeder equipment, can be used as a whole equipment system, a vibrating motor is added to the feeding hopper, the possibility that the coal slime blocks the hopper is reduced, the best curve angle can be set according to the nature of the coal slime when designing the feeding hopper, the screw feeder adopts frequency conversion control, can stably and uniformly feed, the degree of automation is high, the data of the matched belt scale and ash content instrument feedback can be quantitatively adjusted, and the problems in the prior art can be effectively solved.

[0008] In order to realize the above-mentioned purpose, the utility model takes technical scheme as: a novel superhigh pressure coal slime blending device, including frame, the upper end of frame is installed with vibrating feeding hopper, the middle part of frame is installed with screw feeder, the bottom inboard of frame is installed with support frame, is provided with belt conveyor on support frame, the bottom of vibrating feeding hopper, screw feeder is installed with motor support, is installed with first vibrating motor and second vibrating motor on motor support, the end of screw feeder is installed with servo motor, the end of servo motor is movably provided with screw rod, is positioned with spiral blade on the outer wall of screw rod, the screw rod and spiral blade are all located in the inside of screw feeder, and the front end bottom of screw feeder is provided with discharge port.

[0009] Preferably, reinforcing side frames are positioned and installed between the vibrating feeding hopper and the frame, triangular supports are positioned and installed between the reinforcing side frames and the frame, motor bases are fixed to positions on the frame where servo motors are installed, and embedded steel plates are positioned and installed at the bottom of the frame.

[0010] Preferably, a feeder inlet is formed in the upper end of the screw feeder at the bottom of the vibrating feeding hopper, feed sealing devices are positioned around the feeder inlet, discharge sealing rubber is positioned at the bottom of the screw feeder, and an explosion-proof control box is installed on the screw feeder.

[0011] Preferably, the vibrating feeding hopper and the frame are fixed through the reinforcing side frames and the triangular supports, the servo motor is fixed through the motor base, and the bottom of the frame is fixed through the embedded steel plate.

[0012] Preferably, the material in the vibrating feeding hopper enters the inside of the screw feeder through the feeder inlet, and is sealed around through the feed sealing devices.

[0013] Preferably, after the material in the vibrating feeding hopper enters the inside of the screw feeder, the material is driven to be conveyed forward to the position of the discharge port by the rotation of the screw rod and the spiral blade driven by the servo motor.

[0014] Compared with the prior art, the novel super-high-pressure coal slime mixing device has the following beneficial effects: the novel super-high-pressure coal slime mixing device has high equipment integration degree, can be used as a whole equipment system, the vibration motor is added to the feeding hopper, the possibility of coal slime blocking the hopper is reduced, the best curve angle can be set according to the properties of the coal slime during design, the frequency conversion control is adopted for the screw feeder, uniform feeding can be stably achieved, the degree of automation is high, and the data fed back by the matched belt scale and ash content instrument can be quantitatively adjusted.

[0015] The filter plate material of the ordinary diaphragm type plate and frame filter press is generally a high polymer material, and the filter cavity thickness is generally 30-35mm. The filter plate material of the super-high-pressure filter press is a full-steel structure, and the filter cavity thickness reaches 60mm, and the filter cake volume is almost doubled compared with the traditional filter press. The full-steel filter plate not only has high pressure resistance, but also has long service life.

[0016] The working area of the super-high-pressure filter press used in the application reaches 800m2, while the working area of the high polymer material super-high-pressure filter press can only reach 300-400m2, which is less than half of the working area of the machine.

[0017] The feeding pressure of the ordinary diaphragm type plate and frame filter press is generally 0.6-0.8MPa, while the feeding pressure of the super-high-pressure filter press reaches 1.2MPa, and the feeding pressure filtration is increased by 0.5-1.0 times.

[0018] The secondary squeezing pressure of the ordinary diaphragm type filter press is generally 1.0-1.5MPa, the secondary squeezing pressure of the high polymer material super-high-pressure filter press is generally 3.0-4.0MPa, and the squeezing pressure of the steel super-high-pressure filter press can reach 10.0MPa.

[0019] The working cycle time of the super-high-pressure filter press and the ordinary diaphragm type filter press is close, but the processing capacity can reach 1.5-2.0 times, the filter cake moisture can be reduced by 5-15%, and the heat generation is increased by 300-800Kcal / kg. The water reduction range of the application reaches 8-10%, and the heat generation is increased by about 500Kcal / kg.

[0020] The filter cake of the ordinary diaphragm type filter press is generally in "block shape", and the effect after crushing by the coal slime crusher is poor, which cannot be mixed into product coal, and can only be sold or discarded. The filter cake after squeezing of the super-high-pressure filter press has low moisture and high heat generation, and after crushing by the novel coal slime crusher, the coal slime product is in "powder shape", which can be very conveniently mixed into product coal for sale, greatly improving the added value of the coal slime product, and reducing resource waste and avoiding environmental pollution.

[0021] In order to improve the intelligent control level of the super high pressure filter press, the intelligent feeding, intelligent sequencing and discharging control systems of the filter press are developed, so that the whole filter press workshop is basically unmanned.

[0022] In order to improve the quantity and efficiency of the coal slime blending product coal, the coal slime intelligent blending system is developed. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is a whole structure schematic view of the novel super high pressure coal slime blending device.

[0024] Fig. 2 It is a structure schematic view of the side view of the novel super high pressure coal slime blending device.

[0025] Fig. 3 It is a structure schematic view of the top view of the novel super high pressure coal slime blending device.

[0026] In the figure: 1, rack; 2, screw; 3, vibrating feeder hopper; 4, triangular support; 5, reinforced side frame; 6, screw feeder; 7, spiral blade; 8, discharge port; 9, belt conveyor; 10, support frame; 11, motor base; 12, servo motor; 13, first vibrating motor; 14, motor support; 15, second vibrating motor; 16, embedded steel plate; 17, discharge sealing rubber; 18, feeding sealing device; 19, explosion-proof control box; 20, feeder inlet. DETAILED DESCRIPTION

[0027] The technical scheme of the utility model will be described clearly and completely in combination with the drawings and specific embodiments.

[0028] As Figs. 1-3As shown, a new type of ultra-high pressure coal slurry blending device, including rack 1, the upper end of the rack 1 is installed with vibration feeder hopper 3, the middle part of the rack 1 is installed with screw feeder 6, the bottom inside of the rack 1 is installed with support frame 10, the support frame 10 is provided with belt conveyor 9, the bottom of the vibration feeder hopper 3 and the screw feeder 6 is installed with motor support 14, the motor support 14 is installed with first vibration motor 13 and second vibration motor 15, the end of the screw feeder 6 is installed with servo motor 12, the end of the servo motor 12 is movably provided with screw rod 2, the outer wall of the screw rod 2 is positioned with spiral blade 7, the screw rod 2 and the spiral blade 7 are located in the inside of the screw feeder 6, the front end bottom of the screw feeder 6 is provided with discharge port 8, the feeding hopper and the screw feeder equipment have high integration degree, can be used as a whole equipment system, the vibration motor is added on the feeding hopper, the possibility of coal slurry blocking the hopper is reduced, and the best curve angle can be set according to the nature of the coal slurry when the feeding hopper is designed, the screw feeder adopts frequency conversion control, can stably and uniformly feed, has high automation degree, and the data fed back by the matched belt scale and ash content instrument can be quantitatively adjusted.

[0029] The reinforcing side frame 5 is positioned and installed between the vibration feeder hopper 3 and the rack 1, the triangular support 4 is positioned and installed between the reinforcing side frame 5 and the rack 1, the motor seat 11 is fixed at the position where the rack 1 is installed with the servo motor 12, and the pre-embedded steel plate 16 is positioned and installed at the bottom of the rack 1.

[0030] The bottom of the vibration feeder hopper 3 is provided with a feeder inlet 20 at the upper end of the screw feeder 6, and the periphery is positioned with a feeding sealing device 18, the bottom of the screw feeder 6 is positioned with a discharge sealing rubber 17, and the screw feeder 6 is installed with an anti-explosion control box 19.

[0031] The vibration feeder hopper 3 and the rack 1 are fixed through the reinforcing side frame 5 and the triangular support 4, the rack 1 fixes the servo motor 12 through the motor seat 11, and the bottom of the rack 1 is fixed through the pre-embedded steel plate 16.

[0032] The inside material of the vibration feeder hopper 3 enters the inside of the screw feeder 6 through the feeder inlet 20, and the periphery is sealed through the feeding sealing device 18.

[0033] After the inside material of the vibration feeder hopper 3 enters the inside of the screw feeder 6, the screw rod 2 and the spiral blade 7 are driven to rotate by the servo motor 12 to drive the material to be transported forward to the position of the discharge port 8.

[0034] Embodiment:

[0035] The technology can be applied to the dehydration and recovery link of fine particle coal slurry in most coal mines in China.

[0036] After pressure filtration, the total moisture of the slime product is reduced from 28% to 20%, and the calorific value is increased from 3600 Kcal / kg to 4100 Kcal / kg.

[0037] The intelligent blending system of slime mainly comprises an intelligent slime returning system, a secondary crushing system of slime, and an intelligent quantitative blending system of slime. The ultra-high pressure filtered slime can be synchronously blended with fine coal, crushed lump fine coal, and medium coal in a quantitative and intelligent manner.

[0038] At present, the traditional diaphragm pressure filtration system is used in the slime dewatering process, and the production technology level is low. The moisture of the pressure filtered slime product is high (Mt=28%), the calorific value is low (about 3600 Kcal / kg), the product can only be in the form of cake or paste, and can only be sold on the ground at a low unit price. Meanwhile, the slime pollutes the coal transportation road and the surrounding environment, resulting in poor economic benefits and low environmental protection level. Therefore, it is necessary to research a slime dewatering process system with a higher production technology level, so as to further reduce the moisture of the product and increase the calorific value of the slime product. After dewatering, the slime product can be crushed into powder and mixed into the product for sale, so as to improve the economic benefits and the environmental protection level.

[0039] After the popularization of the process, great economic benefits will be brought to China. In terms of economic benefits, according to the annual production of 35 billion tons of coal in China, the slime yield is 8%, and the amount of slime is 2.8 billion tons. After drying, the slime is mixed into the sale of electric coal, and the value-added amount of one ton of slime is more than 60 yuan. According to the annual production of the industry, the coal washing industry can increase the value of 16.8 billion yuan per year.

[0040] After the popularization of the process, great social benefits will be brought to China. Most of the coal mines will realize "non-sliming" production, and the problems of slime transportation pollution and slime disposal can be well solved, so that the social benefits are good.

[0041] Working principle: The utility model discloses a machine frame 1, screw 2, vibrating feeder hopper 3, triangular support 4, reinforcing side frame 5, screw feeder 6, spiral blade 7, discharge port 8, belt conveyor 9, support frame 10, motor base 11, servo motor 12, first vibration motor 13, motor support 14, second vibration motor 15, embedded steel plate 16, discharge sealing rubber 17, feeding sealing device 18, explosion-proof control box 19, feeder inlet 20.

[0042] After being crushed, the ultra-high pressure slime filter cake can be well on-line and stably blended through the vibrating feeder hopper + screw feeder.

[0043] The feeding hopper + screw feeder has high integration degree and can be used as a whole equipment system.

[0044] The vibrating motor is added to the feeding hopper, which reduces the possibility of slime blocking the hopper, and the feeding hopper can be designed with the best curve angle according to the properties of slime.

[0045] The screw feeder adopts frequency control, can stably and uniformly feed, has high automation degree, and can quantitatively adjust data fed back by a subsequent matched belt scale and ash content instrument, and has an industrial intelligent transformation prerequisite.

[0046] Intelligent blending system

[0047] (1) Online blending of slime

[0048] The slime (below 8 mm) crushed by the primary crusher can be directly stored in a newly-built slime shed, or can be unloaded to a slime blending and coal returning hopper through a plow-type unloader of a slime belt, and then is transported to a slime secondary crusher (below 3 mm) through a uniform feeder, and the crushed slime is transported to a newly-built slime unloading hopper through a slime belt, and is blended into a product for sale through a quantitative coal feeder set at a proportion.

[0049] (2) Blending after landing of slime

[0050] The slime can be directly stored in a slime shed after being dewatered through filter pressing, and then the loose slime product is sent into a slime coal returning hopper in a coal storage shed through a shovel truck, and then is transported to a slime secondary crusher through a precise weighing type coal feeder under the coal returning hopper, and is blended into a product after being crushed. The weighing signal of a coal feeder at the top of a product belt and the signal of a slack coal product or small lump coal product belt scale are matched, and the coal returning coal feeder and the coal quantity of the slime blending belt are precisely blended into the product through adjustment. The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and the utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A novel ultra-high pressure coal slime blending device, comprising a frame (1), characterized in that: The upper end of the frame (1) is provided with a vibrating feeding hopper (3), the middle part of the frame (1) is provided with a screw feeder (6), the inner side of the bottom of the frame (1) is provided with a supporting frame (10), the supporting frame (10) is provided with a belt conveyor (9), the bottom of the vibrating feeding hopper (3) and the screw feeder (6) is provided with a motor support (14), the motor support (14) is provided with a first vibrating motor (13) and a second vibrating motor (15), the end of the screw feeder (6) is provided with a servo motor (12), the end of the servo motor (12) is movably provided with a screw rod (2), the outer wall of the screw rod (2) is provided with a spiral blade (7), and the screw rod (2) and the spiral blade (7) are located in the screw feeder (6).

2. A novel ultra-high pressure coal slurry blending device according to claim 1, characterized in that: The vibrating feeding hopper (3) and the frame (1) are provided with a reinforcing side frame (5), and the reinforcing side frame (5) and the frame (1) are provided with a triangular support (4), the position of the servo motor (12) on the frame (1) is fixedly provided with a motor seat (11), and the bottom of the frame (1) is provided with a pre-buried steel plate (16).

3. A novel ultra-high pressure coal slurry blending device according to claim 1, characterized in that: The bottom of the vibrating feeding hopper (3) is provided with a feeder inlet (20) at the upper end of the screw feeder (6), and the periphery is provided with a feeding sealing device (18), the bottom of the screw feeder (6) is provided with a discharge sealing rubber (17), and the screw feeder (6) is provided with an explosion-proof control box (19).

4. A novel ultra-high pressure coal slurry blending device according to claim 2, characterized in that: The vibrating feeding hopper (3) and the frame (1) are fixed through the reinforcing side frame (5) and the triangular support (4), the frame (1) is fixed through the motor seat (11) to the servo motor (12), and the bottom of the frame (1) is fixed through the pre-buried steel plate (16).

5. A novel ultra-high pressure coal slurry blending device according to claim 3, characterized in that: The material in the vibrating feeding hopper (3) enters the inside of the screw feeder (6) through the feeder inlet (20), and the periphery is sealed through the feeding sealing device (18).

6. A novel ultra-high pressure coal slurry blending device according to claim 1, characterized in that: After the material in the vibrating feeding hopper (3) enters the inside of the screw feeder (6), the screw rod (2) and the spiral blade (7) are driven to rotate by the servo motor (12) to drive the material to be conveyed forward to the position of the discharge port (8).

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