A viscous mass containing block pulse negative pressure screw conveying system

Abstract

The present application discloses a kind of viscous block-shaped matter pulse negative pressure spiral conveying system, it includes the conveying pipe of inclined distribution, spiral blade is rotationally arranged in conveying pipe, the discharge end of conveying pipe is communicated with negative pressure cylinder, the bottom of the negative pressure cylinder is provided with the valve plate that opens and closes the discharge port of negative pressure cylinder, the bottom of the negative pressure cylinder is connected with jet vacuum device, the water outlet end and water inlet end of the jet vacuum device are connected water tank by pipeline respectively, the water outlet end of the jet vacuum device is also connected with the water replenishing valve on conveying pipe, the jet vacuum device is used to suck the air of negative pressure cylinder when valve plate closes discharge port and replenish moisture to conveying pipe by water replenishing valve.Compared with prior art, the jet vacuum device of the present application is started when valve is closed, the jet vacuum device can replenish moisture to material in conveying pipe, and the negative pressure zone is formed in discharge end by cooperating negative pressure cylinder, and the viscous material containing hard block-shaped material is quickly lifted and transported by cooperation.

Description

Technical Field

[0001] This invention relates to the field of conveying viscous, blocky materials, and in particular to a pulse negative pressure spiral conveying system for viscous, blocky materials. Background Technology

[0002] Pumping viscous materials containing hard lumps to a certain height requires overcoming difficulties such as the material's stickiness and preventing hard lumps from jamming the actuators, necessitating a specialized pumping system. Currently, commonly used equipment for transferring viscous materials includes bucket elevators and excavators. These devices are also frequently used for short-distance transfer of bulk and lumpy materials. Bucket elevators can achieve direct transport from the hopper, using continuously rotating buckets to transport material from the bottom to a certain height. However, when conveying viscous materials containing hard lumps, the hard lumps can easily enter the chain and cause jamming. Excavators offer good stability when transferring viscous materials, but their efficiency and continuity are poor, and the feed rate is difficult to control. Therefore, when strict conveying requirements are needed, and the pumping process involves viscous materials containing hard lumps, specialized systems and equipment are required to meet the demands. Summary of the Invention

[0003] This invention provides a pulse negative pressure screw conveyor system for viscous lumpy materials, which solves the problems of jamming bucket elevators and difficulty in controlling the feed rate in excavators in the current conveying of viscous lumpy materials.

[0004] This invention provides a pulse negative pressure spiral conveying system for viscous, blocky materials, comprising an inclined conveying pipe, spiral blades rotatably disposed inside the conveying pipe, a negative pressure cylinder connected to the discharge end of the conveying pipe, a valve plate at the bottom of the negative pressure cylinder for opening and closing the discharge port of the negative pressure cylinder, a jet vacuum device connected to the negative pressure cylinder, the water outlet and water inlet of the jet vacuum device being connected to a water tank via pipes, and the water outlet of the jet vacuum device also being connected to a water supply valve on the conveying pipe, the jet vacuum device being used to draw air from the negative pressure cylinder when the valve plate closes the discharge port and to replenish water to the conveying pipe through the water supply valve.

[0005] Preferably, the water supply valve includes: a limit cap, a valve core, a spring, and a valve body. The outlet end of the valve core is slidably connected to the valve body, and the inlet end cooperates with the limit cap to control the opening and closing of the water supply valve. One end of the spring is connected to the valve body, and the other end is connected to the inlet end of the valve core. The outlet end of the valve core is provided with multiple outlet holes.

[0006] Preferably, the feed end of the conveying pipe is conical, the orifice diameter of the feed end of the conveying pipe gradually decreases with the conveying direction, and the spiral blades at the feed end of the conveying pipe are conical spirals.

[0007] Preferably, the pitch of the helical blades gradually decreases with the direction of transport.

[0008] Preferably, the water outlet is inclined, and the outlet of the water outlet is close to the axis of the valve body.

[0009] Preferably, the diameter of the water outlet gradually decreases along the water supply direction.

[0010] Preferably, the valve body has a nozzle at the outlet end of the valve core along the water supply direction. The nozzle includes a first conical section, a straight column section, and a second conical section. The two ends of the straight column section are respectively fixed with the first conical section and the second conical section. The first conical section is located at the end of the straight column section close to the valve core. The diameter of the hole at the end of the first conical section away from the valve core is smaller than the diameter of the outlet end of the valve core. The diameter of the hole of the second conical section gradually increases along the water supply direction.

[0011] Preferably, it also includes a controller that controls the jet vacuum device and the valve plate to open and close at set time intervals.

[0012] Preferably, the pipe connecting the water inlet of the jet vacuum device to the water tank is equipped with a one-way valve, and the jet vacuum device also includes a water pump disposed between the one-way valve and the water tank.

[0013] Preferably, the valve plate is connected to a hydraulic cylinder.

[0014] Compared with the prior art, the jet vacuum device, water supply valve, negative pressure cylinder, valve plate and water tank of the present invention work together to form intermittent feeding, and the amount of material conveyed each time is uniform. When the valve is closed, the jet vacuum device is activated. The jet vacuum device can replenish water to the material in the conveying pipe. The two work together with the negative pressure cylinder to form a negative pressure zone at the discharge end. The two work together to quickly lift and transport the hard, lumpy, sticky material. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the water supply valve of the present invention;

[0018] Figure 3 for Figure 1 An enlarged schematic diagram of the structure at point A in the middle.

[0019] Figure label:

[0020] 1. Delivery pipe, 2. Spiral blade, 3. Valve plate, 4. Jet vacuum device, 5. Water tank, 6. Water supply valve, 7. Controller, 8. Oil cylinder, 9. Negative pressure cylinder, 100. Drive mechanism, 41. Check valve, 42. Water pump, 61. Limit cap, 62. Valve core, 63. Spring, 64. Valve body, 621. Water outlet, 641. Nozzle, 6411. First cone section, 6412. Straight column section, 6413. Second cone section. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0022] See attached document Figure 1 This invention provides a pulse negative pressure spiral conveying system for viscous, blocky materials, comprising an inclined conveying pipe 1, with the lower end of the conveying pipe 1 being the inlet and the higher end being the outlet. A spiral blade 2 is rotatably mounted inside the conveying pipe 1. A drive mechanism 100 for rotating the spiral blade 2 is connected to the higher end of the conveying pipe 1. A negative pressure cylinder 9 is connected to the outlet of the negative pressure cylinder 9. A valve plate 3 for opening and closing the outlet of the negative pressure cylinder 9 is located at the bottom of the negative pressure cylinder 9. A jet vacuum device 4 is connected to the negative pressure cylinder 9. The outlet and inlet of the jet vacuum device 4 are connected to a water tank 5 via pipes. The water from the jet vacuum device 4 can be recycled. The outlet of the jet vacuum device 4 is also connected to a water replenishment valve 6 on the conveying pipe 1. The jet vacuum device 4 is used to draw air from the negative pressure cylinder 9 when the outlet is closed by the valve plate 3 and to replenish water to the conveying pipe 1 through the water replenishment valve 6. When valve plate 3 is open, the viscous material containing hard lumps in conveying pipe 1 falls from the negative pressure cylinder 9. When the discharge rate decreases, valve plate 3 closes, and the jet vacuum device 4 is activated. The water flowing through this device quickly draws in the air in the negative pressure cylinder 9 to create a negative pressure zone within the cylinder. Due to the pressure difference, the viscous material containing hard lumps rushes towards the discharge port, and then valve plate 3 is reopened. During the operation of the jet vacuum device 4, the water supply valve 6 adds a small amount of water to the conveying pipe 1 to adjust the flowability and adhesion of the material near the pipe wall, facilitating rapid material transport. The jet vacuum device 4 can both replenish water to the material in the conveying pipe 1 and, together with the negative pressure cylinder 9, create a negative pressure zone at the discharge end, thus rapidly lifting and transporting the viscous material containing hard lumps.

[0023] As another embodiment of the present invention: refer to the appendix Figure 2The water supply valve 6 includes a limit cap 61, a valve core 62, a spring 63, and a valve body 64. The outlet end of the valve core 62 is slidably connected to the valve body 64, and the inlet end cooperates with the limit cap 61 to control the opening and closing of the water supply valve 6. One end of the spring 63 is connected to the valve body 64, and the other end is connected to the inlet end of the valve core 62. The outlet end of the valve core 62 is provided with multiple outlet holes 621. After the jet vacuum device 4 is started, pressurized water enters the cavity of the limit cap 61. Due to the water pressure, the spring 63 on the valve core 62 is pressed down, and the upper end face of the valve core 62 separates from the lower end face of the limit cap 61. The pressurized water enters the cavity between the valve core 62 and the valve body 64, and then is sprayed into the delivery pipe 1 through the multiple outlet holes 621 evenly distributed on the lower end of the valve core 62. Multiple outlet holes 621 are provided to control the amount of water supplied.

[0024] As another embodiment of the present invention: the feed end of the conveying pipe 1 is conical, and the aperture of the feed end of the conveying pipe 1 gradually decreases with the conveying direction. This setting facilitates the material to enter the conveying pipe 1. The spiral blade 2 at the feed end of the conveying pipe 1 is a conical spiral so as to match the feed end of the conveying pipe 1.

[0025] In another embodiment of the present invention, the pitch of the spiral blade 2 gradually decreases with the direction of conveying.

[0026] As another embodiment of the present invention: the water outlet 621 is inclined, and the water outlet of the water outlet 621 is close to the axis of the valve body 64.

[0027] As another embodiment of the present invention: the diameter of the water outlet 621 gradually decreases along the water replenishment direction. Since the material that needs to be replenished with water is a sticky material containing hard lumps, this setting can effectively prevent the water outlet 621 from being blocked.

[0028] In another embodiment of the present invention: the valve body 64 has a nozzle 641 at the outlet end of the valve core 62 along the water replenishment direction. The nozzle 641 includes: a first conical section 6411, a straight column section 6412, and a second conical section 6413. The first conical section 6411 and the second conical section 6413 are fixed at both ends of the straight column section 6412, respectively. The first conical section 6411 is located at the end of the straight column section 6412 near the valve core 62. The diameter of the orifice at the end of the first conical section 6411 away from the valve core 62 is smaller than the diameter of the outlet end of the valve core 62. The diameter of the orifice of the second conical section 6413 gradually increases along the water replenishment direction. The first conical section 6411 is used to restrict the valve core 62 from continuing to slide towards the conveying pipe 1. The nozzle 641 is connected to the conveying pipe 1. Specifically, multiple water replenishment valves 6 are provided, and the multiple water replenishment valves 6 are evenly distributed on the conveying pipe 1 to evenly replenish water to the material in the conveying pipe 1.

[0029] As another embodiment of the present invention: this embodiment also includes a controller 7, which controls the jet vacuum device 4 and the valve plate 3 to open and close at a set time interval.

[0030] One implementation method for opening and closing valve plate 3: Refer to the attached document. Figure 3 The valve plate 3 is connected to the oil cylinder 8. Specifically, one side of the valve plate 3 is hinged to the negative pressure cylinder 9, and the other end is hinged to the piston rod of the oil cylinder 8.

[0031] In another embodiment of the present invention, a one-way valve 41 is provided on the pipe connecting the water inlet end of the jet vacuum device 4 to the water tank 5. The jet vacuum device 4 also includes a water pump 42 disposed between the one-way valve 41 and the water tank 5. When the jet vacuum device 4 is started, the water flow pressurized by the water pump 42 flows through the one-way valve 41 and enters the main body of the jet vacuum device 4. The water flow through the main body of the jet vacuum device 4 quickly draws in the air in the negative pressure cylinder 9, thereby forming a negative pressure zone at the discharge end. At this time, the valve plate 3 is in the closed state under the drive of the oil cylinder 8.

[0032] In operation, the viscous, lumpy material being conveyed enters the conveying pipe 1 under the rotation of the spiral blades 2 and climbs upwards. At this time, the jet vacuum device 4, connected to the water tank 5, is activated. Water pressurized by the water pump 42 flows through the one-way valve 41 and into the main body of the jet vacuum device 4. The main body of the jet vacuum device 4 is connected to the negative pressure cylinder 9. The water flowing through the jet vacuum device 4 quickly draws in the air inside the negative pressure cylinder 9 to create a negative pressure zone. At this time, the valve plate 3 is closed under the drive of the hydraulic cylinder 8. Due to the presence of the negative pressure zone, the material, carrying lumps, quickly climbs to the discharge port. The hydraulic cylinder 8 drives the valve plate 3 to open, and the material falls and is transported to the next process equipment. During operation of the jet vacuum device 4, a portion of the water flowing through the device is diverted to the water supply valve 6 and then enters the conveying pipe 1 to adjust the flowability and adhesion of the material near the pipe wall. The jet vacuum device 4, water supply valve 6, negative pressure cylinder 9, valve plate 3 and water tank 5 of the present invention cooperate to form intermittent feeding, and the amount of material conveyed each time is uniform. When the valve is closed, the jet vacuum device 4 is activated. The jet vacuum device 4 can replenish water to the material in the conveying pipe 1. The two work together with the negative pressure cylinder 9 to form a negative pressure zone at the discharge end. The two work together to quickly lift and transport the hard, lumpy, sticky material.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A viscous mass containing pulsed negative pressure screw conveyor system for adhering, characterized by, The device comprises a conveying pipe with inclined distribution, a spiral blade is arranged in the conveying pipe, a negative pressure cylinder is connected with the discharge end of the conveying pipe, a valve plate is arranged at the bottom of the negative pressure cylinder to open and close the discharge port of the negative pressure cylinder, a water jet vacuum device is connected with the bottom of the negative pressure cylinder, the water outlet and the water inlet of the water jet vacuum device are connected with a water tank through pipes respectively, and the water outlet of the water jet vacuum device is also connected with a water supplement valve on the conveying pipe.

2. A viscous mass containing pulsed negative pressure screw conveyor system for adhering as claimed in claim 1, wherein, The water supplement valve comprises a limiting cap, a valve core, a spring and a valve body, the water outlet of the valve core is slidably connected with the valve body, the water inlet is matched with the limiting cap to control the opening and closing of the water supplement valve, one end of the spring is connected with the valve body, and the other end is connected with the water inlet of the valve core, and the water outlet of the valve core is provided with a plurality of water outlets.

3. A viscous mass containing pulsed negative pressure screw conveyor system for use in accordance with claim 1, wherein, The inlet end of the conveying pipe is conical, the hole diameter of the inlet end of the conveying pipe gradually decreases along the conveying direction, and the spiral blade of the inlet end of the conveying pipe is conical spiral.

4. A viscous mass containing pulsed negative pressure screw conveyor system for adhering masses according to claim 3, characterized in that, The pitch of the spiral blade gradually decreases along the conveying direction.

5. A viscous mass containing pulsed negative pressure screw conveyor system for adhering as claimed in claim 2, wherein, The water outlets are arranged obliquely, and the water outlets are close to the axis of the valve body.

6. A viscous mass containing pulsed negative pressure screw conveyor system for adhering masses according to claim 5, characterized in that, The hole diameter of the water outlets gradually decreases along the water supplement direction.

7. A viscous bolus-containing pulsed negative pressure screw conveyor system according to claim 6, wherein, The valve body is provided with a nozzle at the water outlet of the valve core along the water supplement direction, the nozzle comprises a first taper section, a straight column section and a second taper section, the straight column section is fixed with the first taper section and the second taper section at two ends respectively, the first taper section is arranged at one end of the straight column section close to the valve core, the hole diameter of the first taper section away from the valve core is smaller than the diameter of the water outlet of the valve core, and the hole diameter of the second taper section gradually increases along the water supplement direction.

8. The viscous bolus-containing pulsed negative pressure auger conveyor system of claim 2, wherein, A controller is further arranged to control the water jet vacuum device and the valve plate to open and close at a set time interval.

9. The viscous bolus-containing pulsed negative pressure auger conveyor system of claim 2, wherein, A one-way valve is arranged on the pipe connecting the water inlet of the water jet vacuum device with the water tank, and the water jet vacuum device further comprises a water pump arranged between the one-way valve and the water tank.

10. A viscous mass containing pulsed negative pressure screw conveyor system for use in accordance with claim 8, wherein, The valve plate is connected with an oil cylinder.

Images