Jig pulse water flow generating mechanism

Abstract

The present invention relates to the technical field of sorting equipment. A jig pulse water flow generating mechanism is arranged between a water trough and a gravity separation tank of the jig, and includes a first chamber, the water trough being in one-way communication with the first chamber, the first chamber being in one-way communication with a second chamber, the first chamber and the second chamber being both volume-variable cavities, and the second chamber being in two-way communication with the gravity separation tank, constituting a two-valve two-membrane jig pulse water flow generating mechanism; or includes an upper valve box disposed in the second chamber, which divides the second chamber into an upper chamber and a lower chamber, the upper chamber being in two-way communication with the gravity separation tank, and the lower chamber being in one-way communication with the upper chamber, constituting a three-valve two-membrane jig pulse water flow generating mechanism. The present invention achieves volume changes of the first chamber and the second chamber through volume changes of a positive pressure diaphragm and a negative pressure diaphragm, and generates an upward pulse water flow through the cooperation of the one-way communication of the valves, without the need for a water pump, thereby saving energy.

Description

Technical Field

[0001] The invention relates to the technical field of sorting equipment, in particular to a jig pulse water flow generating mechanism. Background Art

[0002] When a jig is re-selecting materials, a water flow generating mechanism is required to generate an upward water flow to re-select the materials. Patent publication number CN104209180B discloses a jig with a multi-stage sorting function. The jig generates a sinusoidal water flow through a cone bucket that reciprocates up and down, and sorts the materials with a sinusoidal water flow. During the downward movement of the jig, it will have a suction effect on the water flow under the re-selection tank screen, affecting the movement of the water flow, thereby interfering with the free fall of the minerals and increasing the re-selection time. Using a high-power water pump to pump water can alleviate the suction generated, but the water pump has high power and energy consumption, and requires a large amount of water. It is not suitable for water-scarce areas and consumes a lot of energy. Summary of the Invention

[0003] In order to solve the problem that the existing jig water flow generating mechanism produces a suction effect, the present invention provides a jig pulse water flow generating mechanism, which can generate a pulse water flow to re-select materials, has a large water supply, does not require a water pump for pumping water, saves energy and water, and reduces the re-selection time.

[0004] In order to achieve the above object, the technical solution of the present invention is:

[0005] The jig's pulsed water flow generator, located between the jig's water trough and gravity separation tank, comprises a first chamber, which is unidirectionally connected to the first chamber. The first chamber is unidirectionally connected to a second chamber, both of which are volume-variable. The second chamber is bidirectionally connected to the gravity separation tank, forming a two-valve, two-membrane jig pulsed water flow generator. The volume change of the second chamber pumps water from the first chamber into the second chamber, which then pushes the water into the gravity separation tank. Because the amount of water supplied to the gravity separation tank is equal to the volume change of the second chamber, the pulsed water flow generator provides a large amount of water to the gravity separation tank, reducing the absorption of water under the mineral screen and shortening the separation time.

[0006] The jig pulse water flow generating mechanism is disposed between the water trough and the gravity separation tank of the jig and includes a first chamber, the water trough being in one-way communication with the first chamber. The first chamber is in one-way communication with a second chamber, which is a variable-volume chamber. The second chamber is provided with an upper valve box that divides the second chamber into an upper chamber and a lower chamber. The upper chamber is in two-way communication with the gravity separation tank, while the lower chamber is in one-way communication with the upper chamber. The lower chamber is a variable-volume chamber, forming a three-valve, two-membrane jig pulse water flow generating mechanism. The volume change of the second chamber pumps water from the first chamber into the lower chamber and pushes water from the lower chamber into the upper chamber. Because the upper chamber is in two-way communication with the gravity separation tank, water from the upper chamber enters the gravity separation tank to reselect the material. Because the lower chamber is in one-way communication with the upper chamber, the water in the gravity separation tank is not drawn in by the downward movement of the lower moving cone. This prevents the downward movement of the lower moving cone from drawing in water from the gravity separation tank, shortening the gravity separation time and improving gravity separation efficiency.

[0007] Furthermore, the first chamber and the second chamber are both hollow structures with one end being larger than the other end, and the small ends of the second chamber and the first chamber are arranged in an upper and lower relative state.

[0008] Furthermore, the first chamber is a cavity enclosed by a lower valve box, a water flow cover, and a positive pressure diaphragm. The lower valve box has an opening at the bottom, the water flow cover is sleeved outside the lower valve box, and the water flow cover and the lower valve box are sealed together by the positive pressure diaphragm. The volume of the first chamber changes by compression or expansion of the positive pressure diaphragm.

[0009] Furthermore, the second chamber is a cavity with an open top formed by a lower moving cone and a negative pressure diaphragm, wherein the lower end of the negative pressure diaphragm is connected to the lower moving cone. The volume of the second chamber changes by compression or expansion of the negative pressure diaphragm.

[0010] When an upper valve box is installed in the second chamber, the upper valve box and the lower movable cone are sealed by a negative pressure diaphragm. The space between the upper valve box, the negative pressure diaphragm, and the lower movable cone constitutes the lower chamber, and the space within the upper valve box constitutes the upper chamber. The volume of the lower chamber changes by compression or expansion of the negative pressure diaphragm.

[0011] Furthermore, the lower valve box and water flow cover are both hollow quadrangular pyramids, the lower moving cone is hollow inverted quadrangular pyramids, and the upper valve box is hollow inverted quadrangular pyramids. The quadrangular pyramid top surfaces of the lower and upper valve boxes are arranged vertically opposite each other. The quadrangular pyramid structure allows for the installation of more one-way valves or check valves, thereby increasing the amount of water flowing through the valve per unit time.

[0012] Furthermore, there are two lower valve boxes and two lower movable cones, and the upper ends of the two lower movable cones are connected to the lower end of the negative pressure diaphragm. When an upper valve box is installed in the second chamber, each lower movable cone has an upper valve box, and the upper ends of the two upper valve boxes are connected to the upper end of the positive pressure diaphragm. The design of two upper valve boxes and two lower valve boxes increases the water flow through the valve boxes.

[0013] Furthermore, a heavy material discharge hole is formed at the bottom of the lower movable cone, and the heavy material discharge hole is connected to a discharge pipe. When an upper valve box is provided in the second chamber, a heavy material discharge hole is formed at the bottom of the upper valve box, and the heavy material discharge hole is connected to a discharge pipe, and the discharge pipe passes through the lower movable cone, so as to facilitate the discharge of small heavy materials that have entered the lower movable cone.

[0014] Furthermore, a pipe is provided between the water flow cover and the lower moving cone, the lower end of the pipe is bidirectionally connected to the water flow cover, and the upper end of the pipe is unidirectionally connected to the lower moving cone.

[0015] Furthermore, a transition box is provided between the upper end of the pipe and the lower moving cone. An opening on one side of the transition box is in one-way communication with the lower moving cone, while the bottom of the transition box is in two-way communication with the top of the pipe. The transition box increases the communication area between the first and second chambers, thereby increasing the water flow rate per unit time.

[0016] Furthermore, the water flow cover is provided with a regulating pipe, and the regulating pipe is provided with a one-way adjustable valve. By arranging the one-way adjustable valve in the regulating pipe, a portion of the water in the first chamber is discharged or a certain amount of air is introduced into the first chamber, thereby reducing the water supply of the mechanism.

[0017] Furthermore, the volume change of the first chamber of the two-valve two-membrane jig pulse water flow generating mechanism is equal to the volume change of the second chamber, and the volume change of the first chamber of the three-valve two-membrane jig pulse water flow generating mechanism is equal to the volume change of the lower chamber.

[0018] Furthermore, the one-way connection is connected by a one-way valve or a check valve to prevent water from flowing back.

[0019] Furthermore, at least one one-way valve or check valve is provided on each side wall of the lower valve box and the upper valve box, and at least one one-way valve or check valve is provided on the side wall of the one-way communication between the lower moving cone and the transition box.

[0020] Through the above technical solution, the beneficial effects of the present invention are:

[0021] 1. The pulse water flow generating mechanism of the two-valve two-membrane jig of the present invention realizes the volume change of the first chamber and the second chamber through the volume change of the positive pressure diaphragm and the negative pressure diaphragm. When the lower movable cone moves downward, the water in the first chamber is replenished to the second chamber. Since the first chamber and the second chamber are unidirectionally connected and the volume change is the same, the water level in the second chamber will not change. When the lower movable cone moves upward, since the second chamber is unidirectionally connected to the first chamber, the lower movable cone pushes the water in the second chamber upward, generating an upward water flow. The lower movable cone reciprocates up and down to form a pulse water flow.

[0022] 2. The pulse water flow generating mechanism of the three-valve two-membrane jig of the present invention is as follows: when the lower moving cone moves downward, the water in the first chamber is replenished to the lower chamber. Since the upper chamber and the lower chamber are one-way connected, the water level in the upper chamber does not change. When the lower moving cone moves upward, since the lower chamber is one-way connected to the first chamber, the water in the lower chamber enters the upper chamber, generating a pulse water flow toward the upper chamber.

[0023] 3. The generation of pulse water flow in the present invention does not require a separate water pump for pumping water. The water pumps used in the prior art have high power, large power and high energy consumption. The present invention uses a positive pressure diaphragm and a negative pressure diaphragm to form a positive and negative pressure difference for suction, and transports water upward to form a pulse water flow, which is more energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the pulse water flow generating mechanism of the jig machine of the present invention. Figure 1 .

[0025] Figure 2 This is a schematic diagram of the structure of the pulse water flow generating mechanism of the jig machine of the present invention. Figure 2 .

[0026] Figure 3 This is a schematic diagram of the structure of the pulse water flow generating mechanism of the jig machine of the present invention. Figure 3 .

[0027] Figure 4 This is a schematic diagram of the structure of the pulse water flow generating mechanism of the jig machine of the present invention. Figure 4 .

[0028] Figure 5 This is a schematic diagram of the structure of the pulse water flow generating mechanism of the jig machine of the present invention. Figure 5 .

[0029] Figure 6 This is a schematic diagram of the check valve mechanism Figure 1 .

[0030] Figure 7 This is a schematic diagram of the check valve mechanism Figure 2 .

[0031] The numbers in the accompanying drawings are: 1 is the first chamber, 2 is the second chamber, 5 is the lower valve box, 6 is the water flow cover, 7 is the positive pressure diaphragm, 8 is the lower moving cone, 9 is the upper valve box, 10 is the negative pressure diaphragm, 11 is the pipeline, 12 is the transition box, 13 is the heavy material discharge hole, 14 is the discharge pipe, 15 is the regulating pipe, 16 is the check valve, 161 is the connecting rod, 162 is the valve plate, 163 is the sealing gasket, 164 is the first limit block, 165 is the second limit block, 166 is the first rotating member, 167 is the second rotating member, 168 is the side wall of the jig, 169 is the water outlet, 170 is the connecting bolt, and 171 is the fixing splint. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0033] like Figures 1 to 5 As shown, the jig pulse water flow generating mechanism is arranged between the water trough and the gravity separation tank of the jig, and includes a first chamber 1. The water trough is unidirectionally connected to the first chamber 1. The first chamber 1 is unidirectionally connected to the second chamber 2. The first chamber 1 and the second chamber 2 are both volume-variable cavities. The second chamber 2 is bidirectionally connected to the gravity separation tank. The bidirectional connection means that the water in the second chamber 2 can directly enter the gravity separation tank, and the water in the gravity separation tank can directly flow into the second chamber 2, forming a two-valve two-membrane jig pulse water flow generating mechanism. The water in the water tank enters the first chamber 1. Due to the volume change of the first chamber 1 and the second chamber 2, the water in the first chamber 1 enters the second chamber 2. Since the second chamber 2 is unidirectionally connected to the first chamber 1, when the volume of the second chamber 2 is reduced, the water in the second chamber 2 will enter the gravity separation tank to re-select the materials in the gravity separation tank. Since the water supply to the gravity separation tank is equal to the volume change of the second chamber 2, the water supply to the gravity separation tank is large, which reduces the suction effect of the mineral underscreen water (the water below the screen in the gravity separation tank) and shortens the sorting time.

[0034] The jig pulse water flow generating mechanism is arranged between the water trough and the gravity separation tank of the jig, and includes a first chamber 1. The water trough is unidirectionally connected to the first chamber 1. The first chamber 1 is unidirectionally connected to the second chamber 2. The first chamber 1 is a volume-variable cavity. The second chamber 2 is provided with an upper valve box 9 that divides the second chamber 2 into an upper chamber and a lower chamber. The upper chamber is bidirectionally connected to the gravity separation tank, and the lower chamber is unidirectionally connected to the upper chamber. The lower chamber is a volume-variable cavity, forming a three-valve two-membrane jig pulse water flow generating mechanism. When the volume of the first chamber 1 increases, the volume of the lower chamber decreases, the water in the water tank enters the first chamber 1, and the water in the lower chamber enters the upper chamber. Since the upper chamber is bidirectionally connected to the gravity separation tank, the water in the upper chamber enters the gravity separation tank to re-select the material; when the volume of the first chamber 1 decreases, the volume of the lower chamber increases, and the water in the first chamber 1 enters the lower chamber. Since the lower chamber is connected to the upper chamber in a single line, when the volume of the lower chamber changes, it avoids suction effect on the gravity separation tank.

[0035] The first chamber 1 and the second chamber 2 are both hollow structures with one end larger than the other end, and the small ends of the second chamber 2 and the first chamber 1 are arranged in an upper and lower relative state.

[0036] The first chamber 1 is a cavity surrounded by a lower valve box 5, a water flow cover 6, and a positive pressure diaphragm 7. The lower valve box 5 is fixed to the jig frame. The bottom of the lower valve box 5 is open and in one-way communication with the water tank. The water flow cover 6 is sleeved outside the lower valve box 5. The water flow cover 6 and the lower valve box 5 are sealed by the positive pressure diaphragm 7. The positive pressure diaphragm 7 gradually expands to increase the volume of the first chamber 1, and the water in the water tank enters the first chamber 1 through the lower valve box 5, that is, the water enters between the lower valve box 5 and the water flow cover 6, the pipeline 11 and the transition box 12. The transition box 12 is a right triangular prism, and the inclined surface of the transition box 12 is connected to the lower movable cone 8. The positive pressure diaphragm 7 gradually compresses to reduce the volume of the first chamber 1, and the water in the first chamber 1 enters the second chamber 2 through the lower movable cone 8.

[0037] The second chamber 2 is a cavity with an open top surrounded by a lower moving cone 8 and a negative pressure diaphragm 10. The upper end of the negative pressure diaphragm 10 is connected to the jig frame and the lower end is connected to the lower moving cone 8. The negative pressure diaphragm 10 gradually expands to increase the volume of the second chamber 2, and the water in the first chamber 1 enters the second chamber 2 through the lower moving cone 8; the negative pressure diaphragm 10 gradually compresses to reduce the volume of the second chamber 2, and the lower moving cone 8 pushes the water in the second chamber 2 into the gravity separation tank to re-select the material in the gravity separation tank.

[0038] When an upper valve box 9 is provided in the second chamber 2, the upper valve box 9 and the lower movable cone 8 are sealed and connected via a negative pressure diaphragm 10. The upper valve box 9 is connected to the jig frame. The space between the upper valve box 9, the negative pressure diaphragm 10, and the lower movable cone 8 constitutes the lower chamber, and the space inside the upper valve box 9 is the upper chamber. When the pulse water flow generating mechanism is a three-valve, two-diaphragm jig pulse water flow generating mechanism, the negative pressure diaphragm 10 gradually expands to increase the volume of the lower chamber, and the water in the first chamber 1 enters the lower chamber through the lower movable cone 8; the negative pressure diaphragm 10 gradually compresses to reduce the volume of the lower chamber, and the water in the lower chamber enters the upper chamber through the upper valve box 9. In this embodiment, the positive pressure diaphragm 7 and the negative pressure diaphragm 10 are both commonly used jig diaphragms in the art. The main purpose of the positive pressure diaphragm 7 is to pressurize water into the second chamber 2, while the main purpose of the negative pressure diaphragm 10 is to draw water from the first chamber 1 into the second chamber 2.

[0039] The lower valve box 5 and the water flow cover 6 are both hollow quadrangular pyramids, the lower moving cone 8 is hollow inverted quadrangular pyramids, and the upper valve box 9 is hollow inverted quadrangular pyramids. The quadrangular pyramid top surfaces of the lower valve box 5 and the upper valve box 9 are arranged vertically opposite to each other. When water flows through the jig, the quadrangular pyramid structure can increase the water flow rate per unit time.

[0040] As an embodiment, the number of the lower valve box 5 and the number of the lower movable cones 8 are both two, and the upper ends of the two lower movable cones 8 are commonly connected to the lower end of the negative pressure diaphragm 10. When an upper valve box 9 is provided in the second chamber 2, each lower movable cone 8 is provided with an upper valve box 9, and the upper ends of the two upper valve boxes 9 are commonly connected to the upper end of the negative pressure diaphragm 10. The two lower valve boxes 5 and the two upper valve boxes 9 increase the water flow.

[0041] A heavy material discharge hole 13 is formed at the bottom of the lower movable cone 8, and is connected to a discharge pipe 14. When an upper valve box 9 is provided in the second chamber 2, a heavy material discharge hole 13 is formed at the bottom of the upper valve box 9, and is connected to a discharge pipe 14. The discharge pipe 14 passes through the lower movable cone 8. Fine heavy materials contained in the material will pass through the screen in the gravity separation tank and fall onto the upper valve box 9. The fine heavy materials will be discharged from the mechanism through the heavy material discharge hole 13 and the discharge pipe 14.

[0042] A pipe 11 is provided between the water flow cover 6 and the lower moving cone 8. The lower end of the pipe 11 is in bidirectional communication with the water flow cover 6, and the upper end is in unidirectional communication with the lower moving cone 8. A transition box 12 is provided between the upper end of the pipe 11 and the lower moving cone 8. One side opening of the transition box 12 is in unidirectional communication with the lower moving cone 8, and the bottom of the transition box 12 is in bidirectional communication with the top of the pipe 11. The water flow cover 6 and the lower moving cone 8 are connected via the pipe 11 and the transition box 12, which acts as a transition point to increase the amount of water flowing through the connection.

[0043] The water flow cover 6 is provided with a regulating pipe 15, and a one-way adjustable valve is provided on the regulating pipe 15. When reselecting the easily selected materials, air is introduced into the first chamber 1 through the regulating pipe 15 or some water in the first chamber 1 is discharged to the outside, thereby reducing the water supply of the mechanism.

[0044] The volume change of the first chamber 1 of the pulse water flow generating mechanism of the two-valve two-membrane jig is equal to the volume change of the second chamber 2; ensuring that when the volume of the second chamber 2 increases, the amount of water supplemented by the first chamber 1 to the second chamber is equal to the volume change of the second chamber 2.

[0045] The volume change of the first chamber 1 of the pulse water flow generating mechanism of the three-valve two-membrane jig is equal to the volume change of the lower chamber. This ensures that when the volume of the lower chamber increases, water enters the lower chamber from the first chamber 1, and the amount of water replenished by the first chamber 1 to the lower chamber is equal to the volume change of the lower chamber.

[0046] like Figures 6 and 7As shown, the one-way connection adopts a one-way valve or a check valve 16. The check valve 16 includes a jig side wall 168, and a valve stem 161 is provided on the jig side wall 168. One end of the valve stem 161 is rotatably connected to the jig side wall 168, and the other end is rotatably connected to the valve plate 162. The two ends of the valve stem 161 are respectively provided with a first limit block 164 and a second limit block 165. The first limit block 164 is a hill-shaped protrusion, and the second limit block 165 includes a rectangular portion and a curved portion at the top of the rectangular portion. The bottom of the rectangular portion is a curved portion. Connected to the valve stem 161, the first stopper 164 is located near the jig sidewall 168 and limits the rotation angle of the valve stem 161 relative to the jig sidewall 168. The second stopper 165 is located near the valve disc 162 and limits the rotation angle of the valve disc 162 relative to the valve stem 161. A water opening 169 is provided on the jig sidewall 168 at a location corresponding to the sealing gasket 163. The sealing gasket 163 is fixed to one side of the valve disc 162 corresponding to the water opening 169. The area of ​​the water opening 169 is smaller than that of the sealing gasket 163. The maximum rotation angle of the valve disc relative to the valve stem is 10° to 20°, and the maximum rotation angle of the valve stem 161 relative to the jig sidewall 168 is 30° to 80°. The water below the jig side wall 168 exerts a thrust on the sealing gasket 163 at the water outlet 169, causing the valve stem 161 to rotate, opening the check valve. Water passes through the check valve. When the valve stem 161 rotates to the maximum rotation angle relative to the jig side wall 168, the first limit block 164 presses against the jig side wall 168 to prevent the valve stem 161 from continuing to rotate. The water passing through the water outlet 169 hits the lower surface of the sealing gasket 163, causing the valve plate 162 to rotate. To reduce the thrust on the check valve, the second limit block 165 limits the rotation angle of the valve disc 162, so that the maximum rotation angle of the valve disc 162 relative to the valve stem 161 is 10° to 20°, preventing the rotation angle from being too large and causing it to fail to close normally. After the water below the jig side wall 168 stops, the water pressure above the jig side wall 168 is applied to the upper surface of the valve disc 162, causing the valve stem 161 to rotate and cover the sealing gasket 163 on the water outlet 169, thereby closing the check valve.

[0047] A fixing plate 171 is provided on the lower surface of the sealing gasket 163. The area of ​​the fixing plate 171 is smaller than that of the water passage 169. Connecting bolts 170 are provided on the valve disc 162. These bolts connect the valve disc 162, the sealing gasket 163, and the fixing plate 171. This ensures a stable connection and prevents the sealing gasket 163 from falling off during frequent rotation of the valve disc 162.

[0048] A first rotating member 166 is provided on the side wall 168 of the jig. Two first rotating members 166 are positioned on either side of the connecting rod 161. Each first rotating member 166 is provided with a first rotating shaft, which connects the two first rotating members 166 and the connecting rod 161. A second rotating member 167 is provided on the upper surface of the valve plate 162. Two second rotating members 167 are positioned on either side of the connecting rod 161. Each second rotating member 167 is provided with a second rotating shaft, which connects the two second rotating members 167 and the connecting rod 161. The first rotating member 166 and the second rotating member 167 serve as a transition piece for the rotational connection, reducing wear on the check valve during high-frequency opening and closing.

[0049] When the check valve 16 is in use, the water below the jig side wall 168 applies a thrust to the sealing gasket 163 at the water outlet 169, causing the connecting rod 161 to rotate with the first rotating member 166 as the center. When the connecting rod 161 rotates to the maximum rotation angle relative to the jig side wall 168 (the maximum rotation angle can be 30°, 40°, 45°, 50°, 60°, 70°, or 80°), the first limit block 164 presses against the jig side wall 168 to prevent the connecting rod 161 from continuing to rotate. The water passing through the water outlet 169 hits the lower surface of the sealing gasket 163, causing the valve plate 162 to rotate, thereby reducing the thrust on the check valve. The second limit block 164 presses against the jig side wall 168 to prevent the connecting rod 161 from continuing to rotate. The limit block 165 limits the rotation angle of the valve plate 162 (the maximum rotation angle can be 10°, 15°, or 20°) to prevent the valve plate 162 from being unable to close normally due to excessive rotation. After the water below the jig side wall 168 stops flowing to the top of the water outlet 169, the water pressure above the jig side wall 168 is applied to the upper surface of the valve plate 162, causing the connecting rod 161 to rotate and cover the sealing gasket 163 on the water outlet 169, thereby closing the check valve. The first rotating member 166 and the second rotating member 167 serve as transition members for the rotational connection, thereby reducing the wear of the check valve during high-frequency opening and closing, thereby increasing the service life of the check valve on the jig.

[0050] At least one one-way valve or check valve 16 is provided on each side wall of the lower valve box 5 and the upper valve box 9 , and at least one one-way valve or check valve 16 is provided on the side wall of the one-way communication between the lower movable cone 8 and the transition box 12 .

[0051] Example 1, a two-valve two-membrane jig pulse water flow generating mechanism, when the volume of the first chamber 1 increases, the positive pressure diaphragm 7 gradually expands to reduce the volume of the second chamber 2, the positive pressure diaphragm 7 is in a gradually expanded state, and the negative pressure diaphragm 10 is in a gradually compressed state, the water in the water tank enters the first chamber 1 through the lower valve box 5, and the lower moving cone 8 pushes the water in the second chamber 2 into the gravity tank to re-select the material in the gravity tank; when the volume of the first chamber 1 decreases, the positive pressure diaphragm 7 is in a gradually compressed state, the volume of the second chamber 2 increases, and the negative pressure diaphragm 10 is in a gradually expanded state In the state, the water in the first chamber 1 enters the second chamber 2 through the lower moving cone 8, and the above process is repeated. The water in the water tank is transported to the gravity separation tank through the alternating change of the chamber volume to generate a pulse water flow, and the materials in the gravity separation tank are re-selected. Since the water supply to the gravity separation tank is equal to the volume change of the second chamber 2, the water supply to the gravity separation tank is large, which reduces the suction effect of water under the mineral screen, so that the minerals are stratified according to different densities, shortening the separation time, and improving the gravity separation efficiency of the materials. It can effectively separate difficult-to-separate materials (materials with a mineral density difference of 0.5 to 1).

[0052] Example 2, a two-valve two-membrane jig pulse water flow generating mechanism. When re-selecting easily selected materials (materials with a mineral density difference greater than 1), air is introduced into the first chamber 1 through the regulating pipe 15 or a portion of the water in the first chamber 1 is discharged to the outside. This can reduce the water supply to the re-selection tank during the upward movement of the lower movable cone 8. During the downward movement of the lower movable cone 8, due to the reduced water supply to the re-selection tank, the second chamber 2 will produce a suction effect on the water under the mineral screen, and the pulse water flow generated by the mechanism becomes a sinusoidal water flow, making the application range of this mechanism wider.

[0053] Example 3, a pulse water flow generating mechanism of a three-valve two-membrane jig. When the volume of the first chamber 1 increases, the volume of the second chamber 2 decreases. The positive pressure diaphragm 7 is in a gradually relaxed state, and the negative pressure diaphragm 10 is in a gradually compressed state. The water in the water tank enters the first chamber 1 through the lower valve box 5, and the water in the lower chamber enters the upper chamber. Since the upper chamber is bidirectionally connected to the gravity tank, the water in the upper chamber enters the gravity tank to reselect the material; when the volume of the first chamber 1 decreases, the volume of the lower chamber increases, and the water in the first chamber 1 enters the lower chamber. In the chamber, the above process is repeated. The water in the water tank is transported to the gravity separation tank through the alternating change of the chamber volume to generate a pulse water flow, and the materials in the gravity separation tank are re-selected. Since the lower chamber is connected to the upper chamber in a single line, when the volume of the lower chamber changes, there is no suction effect in the gravity separation tank. The minerals are completely in a free fall state in the water flow of the gravity separation tank, so that the minerals are stratified according to different densities, shortening the sorting time and improving the gravity separation efficiency of the materials. It can sort difficult-to-select materials (materials with a mineral density difference of 0.5 to 1).

[0054] Comparative Example 4, the present invention is based on the pulse water flow generating mechanism of the three-valve two-membrane jig, but if it does not include the lower valve box 5, the water flow cover 6 and the positive pressure diaphragm 7, then the pipe 11 and the transition box 12 are bidirectionally connected to the water tank, and when the volume of the lower chamber increases, the negative pressure diaphragm 10 is in a gradually relaxed state, and the lower chamber is in a negative pressure state. The water in the pipe 11 and the transition box 12 is pumped into the lower chamber, and some air may exist during the pumping process. When the volume of the lower chamber decreases, the negative pressure diaphragm 10 is in a gradually compressed state, and the water in the lower chamber and the possible air enter the upper chamber through the lower valve box 9. Since the upper chamber is bidirectionally connected to the gravity tank, the water in the upper chamber enters the gravity tank to re-select the material. Due to air escape, the water in the gravity tank will be sucked in, and the water flow formed in the gravity tank is a sinusoidal water flow. When facing easy-to-select materials, this embodiment enables the pulse water flow generating mechanism to generate a sinusoidal water flow, which can re-select easy-to-select materials.

[0055] A method for generating pulsed water flow in a two-valve two-membrane jig includes the following steps:

[0056] S1. When the lower cone 8 moves downward, it and the water flow cover 6 move downward, causing the negative pressure diaphragm 10 to expand and the positive pressure diaphragm 7 to compress, reducing the space in the first chamber 1 and increasing the space in the second chamber 2. Because the water tank is in one-way communication with the first chamber 1, the circulating water in the first chamber 1 flows through the check valve 16 on the lower cone 8 into the second chamber 2.

[0057] S2. When the lower cone 8 moves upward, it and the water flow cover 6 move upward, compressing the negative pressure diaphragm 10 and relaxing the positive pressure diaphragm 7. This increases the space in the first chamber 1 and decreases the space in the second chamber 2. Because the first and second chambers 1 and 2 are in one-way communication, the circulating water in the jig tank enters the first chamber 1 through the check valve 16 on the lower valve box 5. Simultaneously, the circulating water in the second chamber 2 enters the gravity separation tank under the thrust of the lower cone 8, where it re-selects the material in the gravity separation tank.

[0058] S3. The circulating water starts from the jig tank, passes through an upward movement of the lower moving cone 8 into the first chamber 1, then passes through a downward movement of the lower moving cone 8 into the second chamber 2, and finally passes through an upward movement of the lower moving cone 8 into the gravity tank;

[0059] S4. Repeat the above steps to form a pulsed flow of circulating water entering the gravity separation tank, which lifts the material in the gravity separation tank and re-selects it. When the lower moving cone 8 moves downward, the water in the gravity separation tank will not be sucked in by the downward movement of the lower moving cone 8, reducing the suction effect of water under the mineral screen. The minerals are in a completely free-fall state in the water flow of the gravity separation tank, so that the minerals are separated into different layers according to their density, shortening the separation time.

[0060] The method for generating pulse water flow of a three-valve two-membrane jig includes the following steps:

[0061] S1. When the lower cone 8 moves downward, it moves downward along with the water flow cover 6, causing the negative pressure diaphragm 10 to expand and the positive pressure diaphragm 7 to compress, reducing the space in the first chamber 1 and increasing the space in the lower chamber. Because the water tank is in one-way communication with the first chamber 1, the circulating water in the first chamber 1 flows through the check valve 16 on the lower cone 8 into the lower chamber.

[0062] S2. When the lower movable cone 8 moves upward, it and the water flow cover 6 move upward, compressing the negative pressure diaphragm 10 and relaxing the positive pressure diaphragm 7. This increases the space in the first chamber 1 and decreases the space in the lower chamber. Because the first chamber 1 and the lower chamber are in one-way communication, the circulating water in the water tank enters the first chamber 1 through the check valve 16 on the lower valve box 5. Simultaneously, the circulating water in the lower chamber enters the upper chamber through the check valve 16 on the upper valve box 9. Because the upper chamber is in two-way communication with the gravity tank, the circulating water in the upper chamber enters the gravity tank.

[0063] S3. Circulating water begins in the water tank, passes through the upward movement of the lower moving cone 8, enters the first chamber 1, passes through the downward movement of the lower moving cone 8 again, enters the lower chamber, and finally passes through the upward movement of the lower moving cone 8 again, enters the upper chamber. When the water in the lower chamber enters the upper chamber, the water in the upper chamber enters the gravity separation tank, throwing up the material in the gravity separation tank;

[0064] S4. Repeat the above steps to form a pulsed water flow in the circulating water entering the gravity separation tank, which will throw up the materials in the gravity separation tank and re-select the materials. Since the lower chamber and the upper chamber are connected in one direction, when the lower moving cone 8 moves downward, the water flow in the gravity separation tank will not be sucked in by the downward movement of the lower moving cone 8, thereby reducing the suction effect of water under the mineral screen. The minerals are completely in a free fall state in the water flow of the gravity separation tank, so that the minerals are stratified according to different densities, shortening the sorting time.

[0065] The method described in the present invention does not require a separate water pump for pumping water. The water pumps used in the prior art have high power and result in high energy consumption. The present invention adopts a pulse water flow generating mechanism to form a positive and negative pressure difference for water in the water tank to suck in water, which is more energy-efficient.

[0066] The embodiments described above are only preferred embodiments of the invention and do not limit the scope of implementation of the invention. Therefore, any equivalent changes or modifications made according to the technical solutions described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. Jig pulse water flow generating mechanism, characterized in that: The invention comprises a first chamber (1), the first chamber being connected to a second chamber (2) in one direction, the first chamber (1) and the second chamber (2) being both volume-variable chambers, the second chamber (2) being a chamber with an upper end open and surrounded by a lower moving cone (8) and a negative pressure diaphragm (10), the lower end of the negative pressure diaphragm (10) being connected to the lower moving cone (8), thereby forming a two-valve two-membrane jig pulse water flow generating mechanism; Or it includes a first chamber (1), the first chamber (1) is connected to the second chamber (2) in one direction, the first chamber (1) is a volume-variable chamber, the second chamber (2) is a chamber with an upper end open and surrounded by a lower moving cone (8) and a negative pressure diaphragm (10), the lower end of the negative pressure diaphragm (10) is connected to the lower moving cone (8), an upper valve box (9) is provided in the second chamber (2) for dividing the second chamber (2) into an upper chamber and a lower chamber, the lower chamber is connected to the upper chamber in one direction, and the lower chamber is a volume-variable chamber, constituting a three-valve two-membrane jig pulse water flow generating mechanism; The first chamber (1) and the second chamber (2) are both hollow structures with one end being larger than the other end, and the small ends of the second chamber (2) and the first chamber (1) are arranged in an upper and lower relative state; The first chamber (1) is a cavity surrounded by a lower valve box (5), a water flow cover (6) and a positive pressure diaphragm (7); the bottom of the lower valve box (5) is open, the water flow cover (6) is sleeved outside the lower valve box (5), and the water flow cover (6) and the lower valve box (5) are sealed and connected via the positive pressure diaphragm (7); A pipe (11) is provided between the water flow cover (6) and the lower moving cone (8), and a transition box (12) is provided between the upper end of the pipe (11) and the lower moving cone (8); The one-way communication is achieved by using a one-way valve or a check valve (16); At least one one-way valve or check valve (16) is provided on each side wall of the lower valve box (5) and the upper valve box (9), and at least one one-way valve or check valve (16) is provided on the side wall of the one-way communication between the lower moving cone (8) and the transition box (12).

2. The jig pulse water flow generating mechanism according to claim 1, characterized in that: When an upper valve box (9) is provided in the second chamber (2), the upper valve box (9) and the lower movable cone (8) are sealed and connected via a negative pressure diaphragm (10), the space between the upper valve box (9), the negative pressure diaphragm (10) and the lower movable cone (8) constitutes a lower chamber, and the space inside the upper valve box (9) is an upper chamber.

3. The jig pulse water flow generating mechanism according to claim 1, characterized in that: The lower end of the pipe (11) is in bidirectional communication with the water flow cover (6), one side opening of the transition box (12) is in unidirectional communication with the lower moving cone (8), and the bottom of the transition box (12) is in bidirectional communication with the top of the pipe (11).

4. The jig pulse water flow generating mechanism according to claim 1, characterized in that: The water flow cover (6) is provided with a regulating pipe (15), and the regulating pipe (15) is provided with a one-way adjustable valve.

5. The jig pulse water flow generating mechanism according to claim 1, characterized in that: The volume change of the first chamber (1) of the pulse water flow generating mechanism of the two-valve two-membrane jig is equal to the volume change of the second chamber (2), and the volume change of the first chamber (1) of the pulse water flow generating mechanism of the three-valve two-membrane jig is equal to the volume change of the lower chamber.

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