Feeding device for thermal desorption equipment

Abstract

The utility model relates to a feeding device for thermal desorption equipment, which comprises a bottom plate, the bottom plate is connected with a thermal desorption equipment body, one side of the thermal desorption equipment body is connected with a chimney, the chimney is connected with the bottom plate, the other side of the thermal desorption equipment body is connected with a feeding port, and the feeding port is connected with a discharging port. And one side of the feeding hole is connected with a one-way air outlet valve in a penetrating manner. The ball drives the sliding rod to move, at the moment, the sliding rod rapidly resets, intermittent feeding and extrusion of materials are completed, if the interior of the feeding port is in a positive pressure state, the materials can be discharged from the one-way air outlet valve, and therefore the situation that the soil throughput of the feeding hopper is far higher than the handling capacity of thermal desorption equipment is avoided; and if the negative pressure value in the thermal desorption chamber is too small, the feeding end is possibly in a positive pressure state, thermal desorption tail gas and entrained soil dust overflow, and secondary pollution accidents are caused.

Description

Technical Field

[0001] The utility model relates to the technical field of soil remediation, in particular to a feeding device for thermal desorption equipment. Background Art

[0002] During the thermal desorption of contaminated soil, the target pollutants and water are converted into gaseous state after heating and enter the thermal desorption tail gas to achieve the purpose of soil remediation. In order to reduce the content of soil dust in the thermal desorption tail gas, the negative pressure value in the thermal desorption chamber is generally maintained between -50 and -150Pa. Since the volume of water in the soil becomes 1244 times the original after it is converted into water vapor, this process generally occurs near the feed end of the thermal desorption chamber. Therefore, the feed end is the location where the evaporation of water in the contaminated soil is relatively concentrated. Therefore, the tail gas collection pipe of the thermal desorption chamber is generally close to the feed port of the contaminated soil.

[0003] The soil throughput of the feed hopper is much higher than the processing capacity of the thermal desorption equipment. Therefore, the thermal desorption chamber can be connected to the outside through the feed hopper. Due to the large amount of water vapor evaporating at the feed end, the local pressure at the feed end increases. If the negative pressure value in the thermal desorption chamber is too small, the feed end may be in a positive pressure state, causing the thermal desorption exhaust gas and entrained soil dust to overflow, causing secondary pollution accidents. Therefore, it is necessary to overcome the risk of blockage at the feed hopper position. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In order to solve the above-mentioned problems in the prior art, the utility model provides a feeding device for thermal desorption equipment, which solves the problem that the soil throughput of the feed hopper is much higher than the processing capacity of the thermal desorption equipment, and a large amount of water vapor evaporates at the feed end, resulting in an increase in local pressure at the feed end. If the negative pressure value in the thermal desorption chamber is too small, the feed end may be in a positive pressure state, resulting in the overflow of thermal desorption exhaust gas and entrained soil dust, causing a secondary pollution accident.

[0006] (II) Technical solution

[0007] In order to achieve the above purpose, the main technical solutions adopted by the utility model are:

[0008] A feeding device for a thermal desorption device comprises a base plate, a thermal desorption device body is connected to the base plate, a chimney is connected to one side of the thermal desorption device body, the chimney is connected to the base plate, a feed port is connected to the other side of the thermal desorption device body, a one-way air outlet valve is connected through one side of the feed port, an intermittent device is connected to the feed port, a moving device is connected to the intermittent device, the intermittent device comprises a shell, a first rotating shaft is passed through and rotatably connected in the shell, a first motor is connected to the first rotating shaft, a half gear is arranged on the outer shell of the first rotating shaft, an intermittent gear is meshed with the outer side of the half gear, a second rotating shaft is connected in the intermittent gear, leakage holes are provided in the intermittent gear and the shell, and a funnel is connected to the shell.

[0009] The shell is connected to the feed port, and the first motor is connected to the shell.

[0010] The second rotating shaft is rotatably connected in the shell, and the two leakage holes are located correspondingly.

[0011] The moving device comprises a connecting plate, the connecting plate is connected to the funnel, a protective shell is connected to the connecting plate, a connecting rod passes through and is rotatably connected to the protective shell, and a second motor is connected to the back of the connecting rod.

[0012] The front side of the connecting rod is connected with a cam, a round ball is overlapped under the cam, and a sliding rod is connected under the round ball.

[0013] The slide bar penetrates through and is slidably connected in the connecting plate, and a pull-back spring is disposed on the outer sleeve of the slide bar.

[0014] One end of the pull-back spring is connected under the ball, and the other end of the pull-back spring is connected to the connecting plate.

[0015] (III) Beneficial effects

[0016] The beneficial effect of the utility model is as follows: in the actual implementation process, when it is necessary to add material, the material is put into the funnel, and then the first motor is started, the first motor drives the first rotating shaft to rotate, the first rotating shaft drives the half gear to rotate, and then the toothed part of the half gear and the toothed part of the intermittent gear want to mesh, and then the intermittent gear is driven to rotate, and then when the toothless part of the half gear overlaps with the toothless part of the intermittent gear, the intermittent gear remains stationary, and this reciprocating process occurs. When the leakage hole of the intermittent gear coincides with the leakage hole of the shell, the material in the funnel falls from the leakage hole, and at the same time the second motor is started, the second motor drives the second rotating shaft to rotate, and the second rotating shaft drives the cam to rotate, and the cam applies an extrusion force to the ball, and the extrusion force drives the ball The ball moves, and the ball drives the slide bar to move. At this time, the slide bar squeezes the leak hole. Then, when the cam moves away from the ball, the pull-back spring applies elastic force to the ball, and the elastic force drives the ball to move, and the ball drives the slide bar to move. At this time, the slide bar quickly resets, thereby completing the intermittent feeding and squeezing of the material. If the feed port is in a positive pressure state, it can be discharged from the one-way air outlet valve, thereby avoiding the soil passing through the feed hopper being much higher than the processing capacity of the thermal desorption equipment body, and a large amount of water vapor evaporates at the feed end, resulting in an increase in local pressure at the feed end. If the negative pressure value in the thermal desorption chamber is too small, it may cause the feed end to be in a positive pressure state, resulting in the overflow of thermal desorption exhaust gas and entrained soil dust, causing secondary pollution accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the intermittent device of the utility model;

[0019] Figure 3 It is a three-dimensional structural diagram of the intermittent gear of the utility model;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the mobile device of the utility model;

[0021] [Description of Reference Numerals]

[0022] 1. Bottom plate; 2. Thermal desorption equipment body; 3. Chimney; 4. Feed port; 5. Intermittent device; 51. Shell; 52. First rotating shaft; 53. First motor; 54. Half gear; 55. Intermittent gear; 56. Second rotating shaft; 57. Leak hole; 58. Funnel; 6. Moving device; 61. Connecting plate; 62. Protective shell; 63. Connecting rod; 64. Second motor; 65. Cam; 66. Ball; 67. Sliding rod; 68. Pull-back spring; 7. One-way air outlet valve. DETAILED DESCRIPTION

[0023] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0024] Please refer to Figures 1 to 4 As shown, a feeding device for a thermal desorption device of the utility model comprises a base plate 1, to which a thermal desorption device body 2 is connected, a chimney 3 is connected on one side of the thermal desorption device body 2, the chimney 3 is connected on the base plate 1, a feeding port 4 is connected on the other side of the thermal desorption device body 2, a one-way air outlet valve 7 is penetrated through one side of the feeding port 4, an intermittent device 5 is connected to the feeding port 4, a moving device 6 is connected to the intermittent device 5, the intermittent device 5 comprises a shell 51, a first rotating shaft 52 is penetrated and rotatably connected in the shell 51, a first motor 53 is connected to the first rotating shaft 52, a half gear 54 is arranged on the outer sleeve of the first rotating shaft 52, an intermittent gear 55 is meshed on the outside of the half gear 54, a second rotating shaft 56 is connected in the intermittent gear 55, a leakage hole 57 is provided in the intermittent gear 55 and the shell 51, and a funnel 58 is connected to the shell 51. In the actual implementation process, when it is necessary to add material, the material is put into the funnel 58, and then the first motor 53 is started, the first motor 53 drives the first shaft 52 to rotate, and the first shaft 52 drives the half gear 54 to rotate, and then the toothed part of the half gear 54 and the toothed part of the intermittent gear 55 want to mesh, and then the intermittent gear 55 is driven to rotate, and then when the toothless part of the half gear 54 overlaps the toothless part of the intermittent gear 55, the intermittent gear 55 remains stationary, and this reciprocating cycle is repeated. When the leakage hole 57 of the intermittent gear 55 is opened, the leakage hole 57 of the intermittent gear 55 is opened. When it partially overlaps with the leak hole 57 of the shell 51, the material in the funnel 58 falls from the leak hole 57. If the feed port 4 is in a positive pressure state, it can be discharged from the one-way air outlet valve 7, thereby avoiding the soil throughput of the feed hopper being much higher than the processing capacity of the thermal desorption equipment, and a large amount of water vapor evaporating at the feed end, resulting in an increase in local pressure at the feed end. If the negative pressure value in the thermal desorption equipment body 2 is too small, the feed end may be in a positive pressure state, resulting in the overflow of thermal desorption exhaust gas and entrained soil dust, causing a secondary pollution accident.

[0025] Optionally, the housing 51 is connected to the feed port 4, and the first motor 53 is connected to the housing 51. In the actual implementation process, by setting the first motor 53 and the housing 51, the first motor 53 cooperates with the housing 51, so that the housing 51 limits the first motor 53, thereby preventing the first motor 53 from shaking during operation.

[0026] Optionally, the second rotating shaft 56 is rotatably connected to the housing 51, and the two leakage holes 57 are located in corresponding positions. In the actual implementation process, by setting the leakage holes 57, when the two leakage holes 57 are located in corresponding positions, the material can leak out from the leakage holes 57.

[0027] Optionally, the moving device 6 includes a connecting plate 61, which is connected to the funnel 58, and a protective shell 62 is connected to the connecting plate 61. A connecting rod 63 is passed through and rotatably connected in the protective shell 62, and a second motor 64 is connected to the back of the connecting rod 63. In the actual implementation process, the second motor 64 is started, and the second motor 64 drives the second rotating shaft 56 to rotate. At this time, the second rotating shaft 56 drives the cam 65 to rotate. At this time, the cam 65 applies an extrusion force to the ball 66, and the extrusion force drives the ball 66 to move. The ball 66 drives the slide bar 67 to move. At this time, the slide bar 67 squeezes the leak hole 57. Then, when the cam 65 moves away from the ball 66, the pull-back spring 68 applies an elastic force to the ball 66, and the elastic force drives the ball 66 to move. The ball 66 drives the slide bar 67 to move. At this time, the slide bar 67 is quickly reset, thereby completing the intermittent feeding and squeezing of the material.

[0028] Optionally, a cam 65 is connected to the front of the connecting rod 63, a ball 66 is overlapped under the cam 65, and a slide bar 67 is connected under the ball 66. In the actual implementation process, by setting the cam 65 and the ball 66, the cam 65 cooperates with the ball 66, so that the cam 65 can intermittently squeeze the ball 66 when rotating.

[0029] Optionally, the slide bar 67 penetrates and is slidably connected in the connecting plate 61, and a pull-back spring 68 is disposed on the outer sleeve of the slide bar 67. In the actual implementation process, by setting the slide bar 67 and the connecting plate 61, the slide bar 67 cooperates with the connecting plate 61, so that the connecting plate 61 can limit the slide bar 67 to prevent the slide bar 67 from shaking when sliding.

[0030] Optionally, one end of the pull-back spring 68 is connected under the ball 66, and the other end of the pull-back spring 68 is connected to the connecting plate 61. In the actual implementation process, by setting the pull-back spring 68, when the ball 66 is not squeezed, the pull-back spring 68 applies elastic force to the ball 66 to keep it stable. When the ball 66 loses the squeezing force, the pull-back spring 68 applies elastic force to the ball 66, and the elastic force drives the ball 66 to move, so that it can be quickly reset.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model, and the standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description and the drawings, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A feeding device for a thermal desorption device, comprising a bottom plate (1), characterized in that: The bottom plate (1) is connected to a thermal desorption device body (2), one side of the thermal desorption device body (2) is connected to a chimney (3), the chimney (3) is connected to the bottom plate (1), the other side of the thermal desorption device body (2) is connected to a feed port (4), one side of the feed port (4) is connected through a one-way air outlet valve (7), the feed port (4) is connected to an intermittent device (5), the intermittent device (5) is connected to a moving device (6), the intermittent device (5) comprises a shell (51), a first rotating shaft (52) passes through and is rotatably connected to the shell (51), a first motor (53) is connected to the first rotating shaft (52), a half gear (54) is provided on the outer surface of the first rotating shaft (52), an intermittent gear (55) is meshed with the outside of the half gear (54), a second rotating shaft (56) is connected to the inside of the intermittent gear (55), a leakage hole (57) is provided in both the intermittent gear (55) and the shell (51), and a funnel (58) is connected to the shell (51).

2. A feeding device for thermal desorption equipment according to claim 1, characterized in that: The housing (51) is connected to the feed port (4), and the first motor (53) is connected to the housing (51).

3. A feeding device for thermal desorption equipment according to claim 1, characterized in that: The second rotating shaft (56) is rotatably connected to the housing (51), and the two leakage holes (57) are located correspondingly.

4. A feeding device for thermal desorption equipment according to claim 1, characterized in that: The moving device (6) comprises a connecting plate (61), the connecting plate (61) is connected to the funnel (58), a protective shell (62) is connected to the connecting plate (61), a connecting rod (63) passes through and is rotatably connected to the protective shell (62), and a second motor (64) is connected to the back of the connecting rod (63).

5. A feeding device for thermal desorption equipment according to claim 4, characterized in that: The front side of the connecting rod (63) is connected to a cam (65), a round ball (66) is overlapped under the cam (65), and a sliding rod (67) is connected under the round ball (66).

6. A feeding device for thermal desorption equipment according to claim 5, characterized in that: The sliding rod (67) passes through and is slidably connected in the connecting plate (61), and a pull-back spring (68) is disposed on the outer sleeve of the sliding rod (67).

7. A feeding device for thermal desorption equipment according to claim 6, characterized in that: One end of the return spring (68) is connected under the ball (66), and the other end of the return spring (68) is connected to the connecting plate (61).

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