Valve controlled pneumatic suction mechanism

Abstract

The application discloses a valve-controlled pneumatic material suction mechanism and belongs to the technical field of material conveying devices. The valve-controlled pneumatic material suction mechanism comprises a multi-way valve and an air inlet pipe installed on the multi-way valve, the air inlet pipe is connected with external air supply equipment, two channels on the side of the multi-way valve are respectively connected with a first air conveying pipe and a second air conveying pipe, the end portions of the first air conveying pipe and the second air conveying pipe are respectively provided with a Venturi tube, the Venturi tube is connected with a material conveying pipe, a blade of a movable impeller is fixed with a second magnetic block, the middle portion of the movable impeller is connected with the output end of a flameproof motor through a one-way bearing, and the flameproof motor and a gas control component are respectively connected with the movable impeller through electric control and gas control. The valve-controlled pneumatic material suction mechanism can control the operation of the anti-blocking component through the pneumatic or electric control mode, avoids the need for electric energy driving at all times, reduces energy loss, and can increase the air flow pressure when the anti-blocking component is driven through the electric control mode, thereby further preventing blockage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material conveying devices, in particular to a valve-controlled pneumatic material suction mechanism. BACKGROUND

[0002] In the water treatment process of Weizhou oilfield group, pneumatic material conveying devices are often used to convey blocky or granular fillers to the filtration unit or suck them out from the filtration unit to meet the operation and maintenance requirements of the water treatment process.

[0003] For example, a China patent with publication number CN207375073U and patent name Feeding device of purification tank, published on May 18, 2018, includes a feeding pipe, a feeding mechanism fixedly connected to the feeding pipe, and a blowing mechanism connected to one end of the feeding pipe. The feeding mechanism includes a feeding hopper fixedly connected to the feeding pipe, and a blocking prevention mechanism arranged in the feeding hopper. The blocking prevention mechanism includes a first thin rope fixedly connected to the inner wall of the feeding hopper at one end and extending out of the feeding hopper at the other end, and a counterweight fixedly connected to the first thin rope. A driving mechanism is fixedly connected to the end of the first thin rope extending out of the feeding hopper for driving the first thin rope to move. However, the existing technology has the following technical problems:

[0004] The existing pneumatic feeding device needs to set a corresponding blocking prevention mechanism to prevent the hopper from being blocked during the conveying of the material. However, the blocking prevention mechanism needs to be driven by a motor during use, which results in high overall power consumption and makes it inconvenient to select the driving mode of the blocking prevention component according to the actual situation.

[0005] Therefore, we propose a valve-controlled pneumatic material suction mechanism to solve the above problems. SUMMARY

[0006] The present application aims to provide a valve-controlled pneumatic material suction mechanism to solve the problem of the existing pneumatic feeding device on the market, which needs to set a corresponding blocking prevention mechanism to prevent the hopper from being blocked during the conveying of the material. However, the blocking prevention mechanism needs to be driven by a motor during use, which results in high overall power consumption and makes it inconvenient to select the driving mode of the blocking prevention component according to the actual situation.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a valve-controlled pneumatic material suction mechanism, comprising a multi-way valve and an air inlet pipe installed on the multi-way valve, and the air inlet pipe is connected with an external air supply device, two channels on the side of the multi-way valve are respectively connected with a first air conveying pipe and a second air conveying pipe, and the end of the first air conveying pipe and the end of the second air conveying pipe are both provided with a Venturi tube, the Venturi tube is connected with a material conveying pipe, and the Venturi tube is provided with a material inlet, the multi-way valve is provided with a power element, and the lower end of the power element is connected with a valve core, the outer side of the material inlet is fixed with a protective cover, the protective cover is connected with a convection pipe and an air control component, the inside of the protective cover is provided with an anti-blocking component for preventing the material inlet from being blocked, and the side of the anti-blocking component is provided with a movable impeller, the blade of the movable impeller is fixed with a second magnetic block, and the middle part of the movable impeller is connected with the output end of a explosion-proof motor through a one-way bearing, and the explosion-proof motor and the air control component are respectively connected with the movable impeller through electric control and air control.

[0008] Preferably, the end of the valve core and the inner wall of the multi-way valve are matched with each other, and the valve core can rotate under the control of the power element.

[0009] By adopting the above technical scheme, the air inlet pipe can be connected with the first air conveying pipe or the second air conveying pipe through the rotation of the valve core.

[0010] Preferably, the air control component comprises a shunt column, and the shunt column is installed on the air conveying pipe, the inside of the shunt column is provided with a flow guide hole, the lower part of the flow guide hole is provided with a blocking block, the middle part of the blocking block is provided as a hollow structure, the blocking block is connected with the inside of the shunt column through an auxiliary spring, the left end of the blocking block is fixed with a magnetic control block, the side of the magnetic control block is provided with an electromagnet, the right end of the blocking block is provided with an infrared distance measuring sensor, and the infrared distance measuring sensor and the explosion-proof motor are electrically connected.

[0011] By adopting the above technical scheme, when the infrared distance measuring sensor receives a signal, the explosion-proof motor is controlled to be turned on through the electrical connection between the infrared distance measuring sensor and the explosion-proof motor.

[0012] Preferably, the blocking block can slide in the inside of the shunt column, and the hollow part on the blocking block is aligned with the flow guide hole in the inside of the shunt column in the initial state.

[0013] By adopting the above technical scheme, the airflow can flow normally through the alignment of the hollow part on the blocking block and the flow guide hole.

[0014] Preferably, the anti-blocking component comprises a moving ring, and limit blocks are fixed on the front and back sides of the moving ring, side edges of the limit blocks are provided with abutting blocks, and the middle part of the abutting block is fixed with a collision rod, the collision rod and the moving ring are connected with each other through built-in springs and protective covers, and the left side of the inner ring body on the moving ring is fixed with a first clamping block and a second clamping block respectively, and the side of the moving ring facing the movable impeller is embedded with a first magnetic block.

[0015] By adopting the above technical scheme, the collision and the reset rebound of the moving ring after moving on the protective cover can be realized through the built-in spring.

[0016] Preferably, the moving ring and the protective cover are in sliding connection, and the limit block on the moving ring is in mutual adhesion with the abutting block in the initial state, and the surfaces of the limit block and the abutting block in mutual adhesion are both provided as inclined surfaces.

[0017] By adopting the above technical scheme, the limit block can be synchronously moved when the moving ring moves, and the abutting block can be extruded and pushed through the movement of the limit block.

[0018] Preferably, the abutting block and the collision rod are vertically distributed, and the end of the collision rod close to the feeding port is in mutual adhesion with the feeding port in the initial state.

[0019] By adopting the above technical scheme, the collision rod can be synchronously moved through the movement of the abutting block, and vibration can be generated through the impact of the collision rod after reset with the feeding port.

[0020] Preferably, the first clamping block and the second clamping block are symmetrically arranged about the central axis of the moving ring, the first clamping block is not in adhesion with the side wall of the feeding port in the initial state, and the second clamping block is in adhesion with the side wall of the feeding port in the initial state.

[0021] By adopting the above technical scheme, the left and right sides of the feeding port can be knocked through the first clamping block and the second clamping block through the reciprocating movement of the moving ring.

[0022] Preferably, the movable impeller is uniformly provided with blades in the circumferential direction, and each blade at the side edge of the movable impeller is fixed with a second magnetic block.

[0023] By adopting the above technical scheme, the distance between the second magnetic block at the end of the blade and the first magnetic block on the moving ring can be changed through the rotation of the movable impeller.

[0024] Compared with the prior art, the valve-controlled pneumatic material suction mechanism can control the operation of the anti-blocking component through pneumatic or electric control, avoid the need for electric energy driving all the time, reduce energy loss, and increase the air flow pressure when the anti-blocking component is driven by electric control, thereby further preventing blockage.

[0025] 1、Set up the movable impeller, in the normal state, part of the gas flow in the gas pipe will enter into the inside of the protective cover through the convection pipe, the gas flow sprayed by the convection pipe can push the movable impeller to rotate, the rotation of the movable impeller can make the distance between the first magnetic block and the second magnetic block change, the magnetic attraction between the first magnetic block and the second magnetic block can make the moving ring reciprocate, the reciprocating movement of the moving ring can knock the feed inlet, the vibration of the knocking can dredge the inside of the feed inlet, and then the anti-blocking component is controlled to run in a pneumatic mode, so that the need for electric energy driving is avoided, and energy loss is reduced;

[0026] 2、Set up the explosion-proof motor, when the inside of the venturi tube is blocked, the blocking block can block the flow guide hole by moving, at this time the gas flow in the gas pipe will not be divided and will only enter the inside of the venturi tube, so that the gas flow entering the inside of the venturi tube is increased, the inside of the venturi tube is dredged, and after the blocking block moves, the infrared distance sensor can transmit a signal to the explosion-proof motor, the explosion-proof motor is controlled to rotate in the locking direction of the one-way bearing, so that the explosion-proof motor can also drive the movable impeller to rotate, and the movable impeller can still knock and dredge the feed inlet under the action of the magnetic force after rotating;

[0027] 3、Set up the moving ring, the first clamping block and the second clamping block can knock the left and right sides of the feed inlet by reciprocating movement of the moving ring, and the limit block can intermittently extrude the abutting block after the moving ring moves, so that the symmetrically distributed abutting blocks and the impact rods can be moved synchronously, the impact rods can be moved to impact the front and back sides of the feed inlet, and the feed inlet is impacted in all directions, so that the dredging effect of the feed inlet can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a front perspective view of the present application;

[0029] Figure 2 It is a multi-way valve and valve core structure diagram of the present application;

[0030] Figure 3 It is a flow guide hole and blocking block structure diagram of the present application;

[0031] Figure 4 It is a protective cover and explosion-proof motor structure diagram of the present application;

[0032] Figure 5 It is a magnetic control block and electromagnet structure diagram of the present application;

[0033] Figure 6 It is a movable impeller and second magnetic block structure diagram of the present application;

[0034] Figure 7 Schematic diagram of the limiting block and the collision rod structure of the application;

[0035] Figure 8 Schematic diagram of the electric control system of the anti-blocking component of the application;

[0036] Figure 9 Schematic diagram of the limiting block and the collision rod structure of the application.

[0037] In the figure: 1, multi-way valve; 2, air inlet pipe; 3, first gas conveying pipe; 4, second gas conveying pipe; 5, Venturi tube; 6, feed inlet; 7, power element; 8, valve core; 9, protective cover; 10, convection pipe; 11, air control component; 111, shunt column; 112, flow guide hole; 113, blocking block; 114, auxiliary spring; 115, magnetic control block; 116, electromagnet; 117, infrared distance measuring sensor; 12, anti-blocking component; 121, moving ring; 122, limiting block; 123, abutting block; 124, collision rod; 125, built-in spring; 126, first clamping block; 127, second clamping block; 128, first magnetic block; 13, movable impeller; 14, second magnetic block; 15, explosion-proof motor. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the application.

[0039] Embodiment one: please refer to Figures 1-6 and Figure 8The existing pneumatic feeding device prevents the hopper from being blocked during the conveying of the material by setting a corresponding anti-blocking mechanism. However, the anti-blocking mechanism needs to be driven by a motor during use, which causes large overall power loss and is inconvenient for selecting the driving mode of the anti-blocking structure according to the actual situation. In order to solve the technical problem, the embodiment discloses the following technical content: a valve-controlled pneumatic material suction mechanism, which comprises a multi-way valve 1 and a gas inlet pipe 2 installed on the multi-way valve 1, and the gas inlet pipe 2 is connected with an external gas supply device, two channels on the side of the multi-way valve 1 are respectively connected with a first gas inlet pipe 3 and a second gas inlet pipe 4, and the end portions of the first gas inlet pipe 3 and the second gas inlet pipe 4 are both provided with a venturi tube 5, the venturi tube 5 is connected with a material conveying pipe, and the venturi tube 5 is provided with a material inlet 6, a power element 7 is installed on the multi-way valve 1, and the lower end of the power element 7 is connected with a valve core 8, a protective cover 9 is fixed outside the material inlet 6, and the protective cover 9 is connected with a convection pipe 10 and a gas control component 11, the inside of the protective cover 9 is provided with an anti-blocking component 12 for preventing the material inlet 6 from being blocked, and the side of the anti-blocking component 12 is provided with a movable impeller 13, the blades of the movable impeller 13 are fixed with second magnetic blocks 14, and the middle part of the movable impeller 13 is connected with the output end of an explosion-proof motor 15 through a one-way bearing, the explosion-proof motor 15 and the gas control component 11 are connected with the movable impeller 13 through electric control and gas control, respectively, the end portion of the valve core 8 and the inner wall of the multi-way valve 1 are in close contact, and the valve core 8 can rotate under the control of the power element 7, the gas control component 11 comprises a shunt column 111, and the shunt column 111 is installed on the gas inlet pipe, the inside of the shunt column 111 is provided with a flow guide hole 112, and the lower part of the flow guide hole 112 is provided with a blocking block 113, the middle part of the blocking block 113 is provided with a hollow structure, and the blocking block 113 is connected with the inside of the shunt column 111 through an auxiliary spring 114, the left end of the blocking block 113 is fixed with a magnetic control block 115, and the side of the magnetic control block 115 is provided with an electromagnet 116, the right end of the blocking block 113 is provided with an infrared distance measuring sensor 117, and the infrared distance measuring sensor 117 and the explosion-proof motor 15 are electrically connected, the blocking block 113 can slide in the inside of the shunt column 111, and the hollow part on the blocking block 113 is aligned with the flow guide hole 112 in the inside of the shunt column 111 in the initial state, the movable impeller 13 is uniformly provided with blades, and each blade on the side of the movable impeller 13 is fixed with a second magnetic block 14.

[0040] When the granular or blocky filler needs to be transported, the feed inlet 6 is connected with the external bin, the air inlet pipe 2 is connected with the external air supply device, the valve core 8 is rotated by the power element 7, the air inlet pipe 2 is communicated with the first air inlet pipe 3 or the second air inlet pipe 4 by the rotation of the valve core 8, and the first air inlet pipe 3 is taken as the main pipeline for description after the passage selection. The air is supplied to the inside of the air inlet pipe 2 by the air supply device, and the air flows into the inside of the venturi pipe 5 through the multi-way valve 1 and the first air inlet pipe 3. The negative pressure is generated after the air flows through the convergent end in the inside of the venturi pipe 5, the negative pressure is generated by the special principle of the venturi pipe 5, the granular material in the inside of the bin enters the inside of the venturi pipe 5 through the feed inlet 6 and is normally pneumatically transported, and part of the air in the first air inlet pipe 3 enters the inside of the protective cover 9 through the convection pipe 10. The air in the inside of the protective cover 9 rotates the movable impeller 13 in the active direction of the one-way bearing under the action of the air flow. The movable impeller 13 can be normally rotated on the output shaft of the explosion-proof motor 15 by the arrangement of the one-way bearing. The second magnetic block 14 on the blade of the movable impeller 13 rotates synchronously after the rotation of the movable impeller 13. When the second magnetic block 14 rotates and approaches the first magnetic block 128 on the moving ring 121, the moving ring 121 moves towards the direction of the feed inlet 6 by the magnetic attraction force between the two, and the feed inlet 6 is impacted by the movement of the moving ring 121. The raw materials in the inside of the feed inlet 6 are prevented from being blocked by the vibration generated by the impact on the feed inlet 6. When the material conveying speed in the inside of the venturi pipe 5 is slow, the electromagnet 116 is electrified. The electromagnet 116 generates repulsion magnetic force on the magnetic control block 115 on the blocking block 113 after being electrified. The blocking block 113 moves to block the flow guide hole 112 in the flow dividing column 111. The air in the first air inlet pipe 3 cannot be divided into the convection pipe 10, and all the air flows into the inside of the venturi pipe 5. Therefore, the air flow in the inside of the venturi pipe 5 is increased, so as to increase the conveying speed of the raw materials in the inside of the venturi pipe 5 and prevent the inside of the venturi pipe 5 from being blocked. The blocking block 113 can be monitored by the infrared distance sensor 117 after moving. The infrared distance sensor 117 transmits the signal to the explosion-proof motor 15 after monitoring the movement of the blocking block 113. The output shaft of the explosion-proof motor 15 rotates towards the locking direction of the one-way bearing after being started. Therefore, the explosion-proof motor 15 can rotate the movable impeller 13 by the output shaft. The moving ring 121 moves and impacts the feed inlet 6 by the magnetic attraction force between the second magnetic block 14 and the first magnetic block 128 after the rotation of the movable impeller 13.

[0041] Embodiment two: The technical content disclosed in this embodiment is further improved on the basis of the above-mentioned embodiment one. The technical content disclosed in this embodiment is as follows: Figure 6 ,Figure 7 and Figure 9 As shown in the drawings, the anti-blocking component 12 comprises a moving ring 121, and the front and back sides of the moving ring 121 are fixed with limiting blocks 122, the side edges of the limiting blocks 122 are provided with abutting blocks 123, the middle part of the abutting blocks 123 is fixed with impact rods 124, the impact rods 124 and the moving ring 121 are connected with each other through the built-in springs 125 and the protective cover 9, the left side of the inner ring body of the moving ring 121 is fixed with a first clamping block 126 and a second clamping block 127 respectively, the side of the moving ring 121 facing the movable impeller 13 is embedded with a first magnetic block 128, the moving ring 121 and the protective cover 9 are in sliding connection, one side of the limiting block 122 on the moving ring 121 is in close contact with the abutting block 123 in the initial state, and the surfaces of the limiting block 122 and the abutting block 123 in close contact with each other are all provided as inclined surfaces, the abutting blocks 123 and the impact rods 124 are vertically distributed, and the end of the impact rod 124 close to the feeding port 6 is in close contact with the feeding port 6 in the initial state, the first clamping block 126 and the second clamping block 127 are symmetrically arranged about the central axis of the moving ring 121, and the first clamping block 126 is not in close contact with the side wall of the feeding port 6 in the initial state, and the second clamping block 127 is in close contact with the side wall of the feeding port 6 in the initial state.

[0042] When the moving ring 121 reciprocates under the action of the first magnetic block 128 and the second magnetic block 14, the reciprocation of the moving ring 121 can impact the left and right sides of the feeding port 6 through the first clamping block 126 and the second clamping block 127, and the moving ring 121 can drive the limiting block 122 to move synchronously after moving, the limiting block 122 can extrude the inclined edge of the abutting block 123 after moving, the abutting block 123 can move towards the outside of the protective cover 9 after being extruded, the abutting block 123 and the impact rod 124 reset and rebound under the action of the built-in spring 125 after the moving ring 121 resets, and the front sides of the feeding port 6 are impacted through the reset and rebound of the impact rod 124, so that the four sides of the feeding port 6 can be impacted by the first clamping block 126, the second clamping block 127 and the two impact rods 124, and the vibration generated by the impact in the four directions of the feeding port 6 can improve the dredging effect of the feeding port 6 on the internal conveying raw materials.

[0043] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0044] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A valve-controlled pneumatic suction mechanism, comprising a multi-way valve (1) and an air inlet pipe (2) mounted on the multi-way valve (1), wherein the air inlet pipe (2) is connected to an external air supply device, two channels on the side of the multi-way valve (1) are respectively connected to a first air supply pipe (3) and a second air supply pipe (4), and venturi tubes (5) are installed at the ends of the first air supply pipe (3) and the second air supply pipe (4), wherein the venturi tubes (5) are connected to the material supply pipe, and a feed port (6) is installed on the venturi tubes (5), a power element (7) is installed on the multi-way valve (1), and a valve core (8) is connected to the lower end of the power element (7), characterized in that: The outer side of the feeding port (6) is fixed with a protective cover (9), and the protective cover (9) is connected with each other through a convection pipe (10) and a gas control component (11), the inside of the protective cover (9) is provided with an anti-blocking component (12) for preventing the feeding port (6) from being blocked, and the side of the anti-blocking component (12) is provided with a movable impeller (13), the blade of the movable impeller (13) is fixed with a second magnetic block (14), and the middle part of the movable impeller (13) is connected with the output end of the explosion-proof motor (15) through a one-way bearing, and the explosion-proof motor (15) and the gas control component (11) are respectively realized by electric control and gas control to realize the rotation of the movable impeller (13). The anti-blocking component (12) comprises a moving ring (121), and the front and rear sides of the moving ring (121) are fixed with limit blocks (122), the side of the limit block (122) is provided with a resisting block (123), and the middle part of the resisting block (123) is fixed with a collision rod (124), the collision rod (124) and the moving ring (121) are connected with each other through the built-in spring (125) and the protective cover (9), and the left side of the inner ring body on the moving ring (121) is respectively fixed with a first clamping block (126) and a second clamping block (127), and the side of the moving ring (121) facing the movable impeller (13) is embedded with a first magnetic block (128).

2. A valve regulated pneumatic pick-up mechanism according to claim 1, wherein: The end outer wall of the valve core (8) and the inner wall of the multi-way valve (1) are mutually adhered, and the valve core (8) can rotate under the control of the power element (7).

3. A valve regulated pneumatic pick-up mechanism according to claim 1, wherein: The gas control component (11) comprises a shunt column (111), and the shunt column (111) is installed on the gas conveying pipe, the inside of the shunt column (111) is provided with a flow guide hole (112), and the lower part of the flow guide hole (112) is provided with a blocking block (113), the middle part of the blocking block (113) is provided as a hollow structure, and the blocking block (113) is connected with the inside of the shunt column (111) through an auxiliary spring (114), the left end of the blocking block (113) is fixed with a magnetic control block (115), and the side of the magnetic control block (115) is provided with an electromagnet (116), the right end side of the blocking block (113) is provided with an infrared distance measuring sensor (117), and the infrared distance measuring sensor (117) and the explosion-proof motor (15) are electrically connected.

4. A valve regulated pneumatic pick-up mechanism according to claim 3, wherein: The blocking block (113) can slide in the inside of the shunt column (111), and the hollow part on the blocking block (113) is aligned with the flow guide hole (112) in the inside of the shunt column (111) in the initial state.

5. A valve regulated pneumatic pick-up mechanism according to claim 1, wherein: The moving ring (121) and the protective cover (9) are slidingly connected, and the side of the limit block (122) on the moving ring (121) is adhered to the resisting block (123) in the initial state, and the surfaces adhered to each other of the limit block (122) and the resisting block (123) are both provided as inclined surfaces.

6. A valve regulated pneumatic pick-up mechanism according to claim 1, wherein: The resisting block (123) and the collision rod (124) are vertically distributed, and the end of the collision rod (124) close to the feeding port (6) is adhered to the feeding port (6) in the initial state.

7. A valve regulated pneumatic pick up mechanism as claimed in claim 1 wherein: The first clamping block (126) and the second clamping block (127) are symmetrically arranged about the central axis of the moving ring (121), and the first clamping block (126) does not abut against the side wall of the feed inlet (6) in the initial state, and the second clamping block (127) abuts against the side wall of the feed inlet (6) in the initial state.

8. A valve regulated pneumatic pick up mechanism as claimed in claim 1 wherein: The movable impeller (13) is uniformly provided with blades in the circumferential direction, and each blade at the side of the movable impeller (13) is fixed with a second magnetic block (14).

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