Adjustable double-screw conveying and discharging mechanism for sludge drying

Abstract

The utility model discloses an adjustable double-screw conveying and discharging mechanism for sludge drying, which comprises a shell, a feed port is arranged at one end of the top of the shell, a discharge port is arranged at one end of the bottom of the shell, a driving screw rod and a driven screw rod are rotatably connected in the shell, and a variable-frequency speed-regulating speed reducer is screwed and fixed on the surface of a fixed seat. When the driving screw rod rotates, the first gear at one end is meshed with the second gear at the same end of the driven screw rod, so that the driving screw rod and the driven screw rod are identical in rotating speed and opposite in rotating direction and are meshed with each other, and materials with different flowability and viscosity can be conveyed to the discharge port and can also be conveyed horizontally or obliquely upwards. And the rotating speed of the variable-frequency speed-regulating speed reducer is regulated, so that the driving screw rod and the driven screw rod can adapt to the conveying requirements of materials with different viscosities and flowability, the rotating speed of the screw rods can be finely adjusted according to actual requirements, and the sludge conveying efficiency and stability can be improved through accurate control.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge drying and conveying, and in particular relates to an adjustable double-screw conveying and discharging mechanism for sludge drying. Background Art

[0002] Sludge refers to semi-solid or solid substances with different water contents produced by sewage treatment plants during the sewage treatment process. It is an inevitable "by-product" of the sewage treatment process. Sludge disposal has become a problem that the environmental protection industry urgently needs to solve. During the process, due to the different water contents of sludge at different stages, high viscosity, many impurities, easy agglomeration and other problems, sludge transportation has become an important part of its environmental protection disposal.

[0003] Existing, traditional sludge transportation generally adopts shaftless screw transportation or shafted single screw transportation. When conveying sticky materials with poor fluidity, such as biochemical sludge with a moisture content of 80%, due to the viscosity and high moisture content of the sludge, the liner of the shaftless screw conveyor is easily worn by friction with the sludge during operation, thereby increasing the operating cost. In addition, due to the viscosity of the sludge, the screw may be eccentric during rotation, affecting the transportation efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable double-screw conveying and discharging mechanism for sludge drying to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable double-screw conveying and discharging mechanism for sludge drying, comprising:

[0006] The outer shell has a feed port at one end of the top of the outer shell and a discharge port at one end of the bottom. A driving end cover is fixed to one end of the outer shell by bolts, and a sealing plate end cover is fixed to the other end by bolts. A fixing seat is fixed to the surface of the driving end cover by bolts. An active spiral rod and a driven spiral rod are rotatably connected in the outer shell, and the active spiral rod and the driven spiral rod rotate in opposite directions and bite each other. A variable frequency speed regulating reducer is fixed to the surface of the fixing seat by bolts. A stainless steel casing is provided at one end of the active spiral rod, and the output end of the variable frequency speed regulating reducer is transmission-connected with the stainless steel casing, so that the variable frequency speed regulating reducer can drive the active spiral rod and the driven spiral rod to rotate when working, and adjust the rotation speed of the active spiral rod and the driven spiral rod to cope with materials with different fluidity and viscosity.

[0007] Preferably, both ends of the active spiral rod and the driven spiral rod rotate and penetrate the outer shell, and bearing seats are provided at the places where the active spiral rod and the driven spiral rod penetrate the outer shell.

[0008] Preferably, a first gear is provided on the surface of the active spiral rod and at one end close to the sealing plate end cover, and a second gear is provided on the surface of the driven spiral rod and at one end close to the sealing plate end cover, and the first gear is meshed with the second gear.

[0009] Preferably, polytetrafluoroethylene pads are provided at the places where the active spiral rod and the driven spiral rod pass through the outer shell.

[0010] Preferably, an oil seal is provided on the surface of the bearing seat.

[0011] Compared with the prior art, the utility model has the following beneficial effects: by starting the frequency conversion speed regulation reducer and adding the sludge to be transported into the feed port, the output shaft of the frequency conversion speed regulation reducer drives the stainless steel casing to rotate, and drives the active screw rod to rotate through the stainless steel casing. When the active screw rod rotates, the first gear at one end meshes with the second gear at the same end of the driven screw rod, thereby driving the driven screw rod to rotate through the rotating second gear, so that the active screw rod and the driven screw rod have the same speed and opposite directions, and mesh with each other, so that materials with different fluidity and viscosity are transported to the discharge port for discharge, and can also be transported horizontally, inclined upward, or even vertically upward. The stickier the fluidity, the easier it is to transport the stickier material. By adjusting the speed of the frequency conversion speed regulation reducer, the active screw rod and the driven screw rod can adapt to the transportation needs of materials with different viscosities and fluidities, so that the speed of the screw rod can be fine-tuned according to actual needs, and the efficiency and stability of sludge transportation can be improved through precise control. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a top view of the utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the first gear meshing with the second gear of the utility model.

[0015] In the figure: 1. Shell; 2. Feed inlet; 3. Discharge outlet; 4. Drive end cover; 5. Sealing plate end cover; 6. Fixed seat; 7. Active screw rod; 8. Driven screw rod; 9. Frequency conversion speed reducer; 10. Stainless steel casing; 11. Bearing seat; 12. First gear; 13. Second gear; 14. PTFE pad; 15. Oil seal. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The utility model provides Figure 1-3 The adjustable double-screw conveying and discharging mechanism for sludge drying shown in the figure comprises:

[0018] Shell 1, the main body of shell 1 is made of carbon steel anti-corrosion material to prevent it from being oxidized, corroded and corrupted, so as to prolong the service life of the equipment. A feed port 2 is provided at one end of the top of the shell 1, and a discharge port 3 is provided at one end of the bottom. A driving end cover 4 is fixed to one end of the shell 1 by bolts, and a sealing plate end cover 5 is fixed to the other end by bolts. A fixing seat 6 is fixed to the surface of the driving end cover 4 by bolts. An active screw rod 7 and a driven screw rod 8 are rotatably connected in the shell 1. The outer diameter of the screws of the active screw rod 7 and the driven screw rod 8 is 235 mm, spiral shaft diameter 89mm, spiral angle 30°, and the active spiral rod 7 and the driven spiral rod 8 turn in opposite directions and bite each other, a variable frequency speed regulating reducer 9 is screwed and fixed on the surface of the fixed seat 6, one end of the active spiral rod 7 is provided with a stainless steel sleeve 10, and the output end of the variable frequency speed regulating reducer 9 is transmission connected with the stainless steel sleeve 10, so that the variable frequency speed regulating reducer 9 can drive the active spiral rod 7 and the driven spiral rod 8 to rotate when working, and adjust the rotation speed of the active spiral rod 7 and the driven spiral rod 8 to cope with materials with different fluidity and viscosity.

[0019] Both ends of the active screw rod 7 and the driven screw rod 8 rotate and penetrate the housing 1 , and a bearing seat 11 is provided at the place where the active screw rod 7 and the driven screw rod 8 penetrate the housing 1 .

[0020] A first gear 12 is disposed on the surface of the active spiral rod 7 and at one end close to the sealing plate end cover 5 , and a second gear 13 is disposed on the surface of the driven spiral rod 8 and at one end close to the sealing plate end cover 5 . The first gear 12 is meshed with the second gear 13 .

[0021] A polytetrafluoroethylene pad 14 is provided at the place where the active spiral rod 7 and the driven spiral rod 8 pass through the housing 1. The polytetrafluoroethylene pad 14 is used to seal the place where the active spiral rod 7 and the driven spiral rod 8 pass through the housing 1 to prevent sludge leakage.

[0022] The surface of the bearing seat 11 is provided with an oil seal 15, and the oil seal 15 provided on the surface of the bearing seat 11 is mainly used to form an effective seal between the bearing seat 11 and the active screw rod 7 or the driven screw rod 8 to prevent the leakage of lubricating oil or the entry of pollutants.

[0023] The adjustable double-screw conveying and discharging mechanism for sludge drying starts the variable frequency speed regulating reducer 9 to work, and adds the sludge to be conveyed into the feed port 2. The output shaft of the variable frequency speed regulating reducer 9 drives the stainless steel sleeve 10 to rotate, and drives the active screw rod 7 to rotate through the stainless steel sleeve 10. When the active screw rod 7 rotates, the first gear 12 at one end meshes with the second gear 13 at the same end of the driven screw rod 8, so that the driven screw rod 8 is driven to rotate through the rotating second gear 13, so that the active screw rod 7 and the driven screw rod 8 have the same speed and opposite directions, and mesh with each other, so that the materials with different fluidity and viscosity are conveyed to the discharge port 3 for discharge, and can also be conveyed horizontally, inclined upward, or even vertically upward. The sticky materials with poor fluidity are easier to convey, and by adjusting the speed of the variable frequency speed regulating reducer 9, the active screw rod 7 and the driven screw rod 8 can adapt to the conveying requirements of materials with different viscosities and fluidities, so that the speed of the screw rods can be fine-tuned according to actual needs, and the efficiency and stability of sludge conveying can be improved through precise control.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable double-screw conveying and discharging mechanism for sludge drying, characterized in that: include: A housing (1), wherein a feed port (2) is provided at one end of the top of the housing (1), and a discharge port (3) is provided at one end of the bottom of the housing (1); a driving end cover (4) is fixed to one end of the housing (1) by bolts, and a sealing plate end cover (5) is fixed to the other end by bolts; a fixing seat (6) is fixed to the surface of the driving end cover (4) by bolts; a driving screw rod (7) and a driven screw rod (8) are rotatably connected in the housing (1), and the driving screw rod (7) and the driven screw rod (8) rotate in opposite directions and rotate in opposite directions. The fixed seat (6) is screwed with a variable frequency speed reducer (9) on its surface, one end of the active screw rod (7) is provided with a stainless steel sleeve (10), and the output end of the variable frequency speed reducer (9) is transmission-connected with the stainless steel sleeve (10), so that the variable frequency speed reducer (9) can drive the active screw rod (7) and the driven screw rod (8) to rotate when working, and adjust the rotation speed of the active screw rod (7) and the driven screw rod (8) to cope with materials with different fluidity and viscosity.

2. The adjustable double-screw conveying and discharging mechanism for sludge drying according to claim 1 is characterized by: Both ends of the active spiral rod (7) and the driven spiral rod (8) rotate and penetrate the outer shell (1), and a bearing seat (11) is provided at the place where the active spiral rod (7) and the driven spiral rod (8) penetrate the outer shell (1).

3. The adjustable double-screw conveying and discharging mechanism for sludge drying according to claim 1 is characterized by: A first gear (12) is provided on the surface of the active spiral rod (7) and at one end close to the sealing plate end cover (5), and a second gear (13) is provided on the surface of the driven spiral rod (8) and at one end close to the sealing plate end cover (5), and the first gear (12) is meshed with the second gear (13).

4. The adjustable double-screw conveying and discharging mechanism for sludge drying according to claim 1 is characterized by: A polytetrafluoroethylene pad (14) is provided at the locations where the active spiral rod (7) and the driven spiral rod (8) penetrate the outer shell (1).

5. The adjustable double-screw conveying and discharging mechanism for sludge drying according to claim 2 is characterized by: An oil seal (15) is provided on the surface of the bearing seat (11).

Images