Stacked screw dehydrator capable of effectively reducing odor discharge

Abstract

The utility model discloses a stacked screw dehydrator capable of effectively reducing odor discharge, which belongs to the field of sludge dehydration equipment, is used for sewage treatment, and comprises a mixed feed pipe, a feed box, a to-be-mixed material stirring assembly, a mixing box body of a stirring device, a mixed discharge pipe, and a stacked screw main body with a screw shaft and a dehydration power assembly, a filter tank outlet is formed in the filter tank below the spiral main body; a box body sealing plate and an exhaust port are arranged at an opening in the top end of the material mixing and stirring assembly; a stacked screw main body cover plate is arranged at an opening in the top of the stacked screw main body, a stacked screw main body exhaust port is formed in the stacked screw main body at the stacked screw main body cover plate, and the stacked screw main body exhaust port is communicated with the interior of the stacked screw main body; a sludge outlet protective cover is arranged at the discharge hole of the stacked screw main body; and an overhaul window is formed in the sludge outlet protective cover. In the sludge treatment process of the stacked screw dehydrator, peculiar smell gas in the sludge can be prevented from being emitted, the working environment can be protected, and the environmental protection performance is improved.

Description

Technical Field

[0001] The present application belongs to the field of sludge dewatering equipment, and more specifically, particularly relates to a screw stack dewatering machine that can effectively reduce odor emissions. Background Art

[0002] Sludge is mostly a solid sediment composed of a mixture of solid and liquid, and its water content is relatively high. If the sludge is not effectively dehydrated, the organic matter rich in it will easily rot and stink, and the subsequent stabilization, harmlessness and resource utilization of the sludge cannot be achieved.

[0003] Referring to the patent document with Chinese patent publication number CN108238707A, a screw stacking dehydrator which effectively reduces odor emission is disclosed, and the following technical contents are specifically disclosed: it comprises an inclined screw stacking body, the screw stacking body comprises a screw propeller and a filter cartridge, the screw propeller is arranged in the filter cartridge; the pitch of the shaft blade of the screw propeller decreases along the propulsion direction; the filter cartridge is composed of a fixed ring and a floating ring stacked in layers.

[0004] However, in patent document No. CN108238707A, only the basic structure or general structure of the screw stack dehydrator is disclosed, but no effective protection is provided for the screw stack dehydrator. During the treatment process, the sludge is prone to emit odorous gases such as odor, which affects the working environment and the health of the staff.

[0005] In order to solve this problem, the patent document with Chinese patent announcement number CN206749106U discloses a spiral stacking machine, and specifically discloses the following technical contents: its spiral stacking body is composed of a fixed ring and a floating ring stacked on each other, the spiral shaft runs through the middle, a filter plate is arranged at the mud outlet at the end of the spiral stacking body, the rear end of the filter plate is a back pressure chamber, and the back pressure chambers include a first back pressure chamber, a second back pressure chamber, and a third back pressure chamber; the top of the back pressure chamber is provided with an adsorption porous device, the rear end of the back pressure chamber is provided with a sewage discharge device, and a masking deodorization device is installed above the sewage discharge device. The back pressure chamber is divided into multiple parts, which can effectively intercept and dehydrate the dirt in layers, and reduce the occurrence of incomplete dehydration due to partial displacement of the spiral stacking body; the dehydration chamber and the sewage discharge device are respectively provided with deodorization devices, which can effectively reduce the emission of odor, improve the comfort of the working environment, and improve the work efficiency accordingly.

[0006] Although the above technical solution can achieve deodorization of odor to a certain extent, it has multiple back pressure chambers and corresponding extrusion ports in the middle part of the back pressure chambers, and the structure is relatively complex, which has certain difficulties in terms of process and equipment; at the same time, the above structure is arranged at the outlet position of the screw stack dehydrator, and no corresponding closed structure is arranged at the feed port position of the screw stack dehydrator, so the deodorization effect is limited to a certain extent. Summary of the invention

[0007] The purpose of the present application is to provide a screw stack dehydrator that effectively reduces odor emissions, which can prevent the emission of odorous gases in sludge during the process of sludge treatment by the screw stack dehydrator, help protect the working environment, and improve environmental protection performance.

[0008] To achieve the above objectives, this application is implemented through the following technical solutions:

[0009] The present application discloses a spiral stacking dehydrator which can effectively reduce the emission of odor, comprising a mixing feed pipe, which is connected to a mixing box through a feed box, a stirring device driven by a mixing and stirring assembly is arranged inside the mixing box, the mixing box is connected to a spiral stacking body through a mixing discharge pipe, a spiral shaft is arranged inside the spiral stacking body, the spiral shaft is driven by a dehydration power assembly, the spiral stacking body lifts the sludge fed by the mixing discharge pipe to the discharge port of the spiral stacking body, and the sewage in the lifting process enters a filter tank below the spiral stacking body, the filter tank is provided with a filter tank outlet, a box sealing plate is arranged at the top opening position of the mixing and stirring assembly, and an exhaust port connected to the mixing box is arranged on the box sealing plate; a spiral stacking body cover plate is arranged at the top opening of the spiral stacking body, a spiral stacking body exhaust port is arranged on the spiral stacking body at the spiral stacking body cover plate, and the spiral stacking body exhaust port is connected to the spiral stacking body; a mud outlet shield is arranged at the discharge port of the spiral stacking body, and an inspection window is opened on the mud outlet shield.

[0010] As one of the preferred technical solutions of the present application, the bottom of the mixing box is connected to a drain pipe, and a stop valve is provided on the drain pipe; a liquid level sensor is provided at the high liquid level position at the top of the mixing box, and the liquid level sensor is connected to the controller through electrical signals, and the controller is respectively connected to the mixing and stirring assembly and the dehydration power assembly through electrical signals.

[0011] As one of the preferred technical solutions of the present application, an observation window is processed on the cover plate of the stacked screw body, and the observation window is made of a transparent plate material.

[0012] As one of the preferred technical solutions of the present application, the mixing box, the spiral stacking body and the filter tank are all located on the frame.

[0013] As one of the preferred technical solutions of the present application, the inspection window is locked by a quick clamp on the mud outlet shield.

[0014] As one of the preferred technical solutions of the present application, a gas spring for opening and closing the cover plate of the screw stacking body is provided at the connection position of the cover plate of the screw stacking body.

[0015] As one of the preferred technical solutions of the present application, the quick clamp includes a clamp base fixedly connected to the discharge port of the stacking screw body, and a limit plate and a clamp pressure plate are hinged on the clamp base respectively. The limit plate is located below the clamp pressure plate, and the limit plate and the clamp pressure plate are connected by a hinged pressure plate connecting rod; the free end of the limit plate is threadedly connected to a plate body pressure rod, and a rubber pressure block is provided at the end of the plate body pressure rod in contact with the plate body.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] The present application improves the structure of the mixing box, the spiral stacking body and the spiral stacking body outlet, thereby improving the sealing performance at this position and the subsequent maintenance, inspection and maintenance, ensuring the stability of the spiral stacking dehydrator during the working process, improving the environmental protection performance of the spiral stacking dehydrator, and helping to improve the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main view of this application.

[0019] Figure 2 It is a top view of the present application.

[0020] Figure 3 It is a stereogram of this application.

[0021] Figure 4 It is a left view of the main body of the screw stack in this application.

[0022] Figure 5 It is a three-dimensional diagram of the quick clamp in this application.

[0023] In the figure: 1. Mixing feed pipe; 2. Feed box; 3. Mixing box body; 4. Mixing stirring assembly; 5. Exhaust port; 6. Water supply pipe; 7. Mixing discharge pipe; 8. Stacking screw body; 9. Dehydration power assembly; 10. Stacking screw body discharge port; 11. Filter tank; 12. Filter tank outlet; 13. Drain pipe; 14. Box sealing plate; 15. Stacking screw body cover plate; 16. Stacking screw body exhaust port; 17. Observation window; 18. Mud outlet shield; 19. Quick clamp; 20. Inspection window; 21. Frame; 22. Gas spring; 23. Screw shaft; 24. Liquid level sensor; 25. Clamp base; 26. Clamp pressure plate; 27. Pressure plate connecting rod; 28. Limit plate; 29. ​​Plate body pressure rod. DETAILED DESCRIPTION

[0024] The technical solution described in this application is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Example 1

[0026] like Figures 1 to 4As shown, a snail stacking dehydrator which can effectively reduce odor emission includes a frame 21, on which a mixing box 3, a snail stacking body 8, and a filter tank 11 are fixedly mounted, respectively. The filter tank 11 is located below the snail stacking body 8, and the mixing box 3 is located at the entrance of the snail stacking body 8.

[0027] The inlet of the mixing box 3 is connected to the mixing feed pipe 1 through the feed box 2. The mixing feed pipe 1 and the feed box 2 can ensure the stable feeding of the sludge delivered by the sludge pump into the mixing box 3.

[0028] The top of the mixing box 3 is provided with a mixing and stirring assembly 4, which includes a driving motor and a speed change mechanism connected to the output end of the driving motor, and the output end of the speed change mechanism is provided with a stirring structure, which includes a stirring shaft and a stirring blade. The bottom end of the mixing box 3 is connected with an emptying pipe 13, and the emptying pipe 13 is provided with a stop valve for opening and closing the emptying pipe 13.

[0029] The top opening of the mixing box 3 is covered with a box sealing plate 14, and a sealing ring is provided around the box sealing plate 14 and / or at the top opening of the mixing box 3. The box sealing plate 14 can seal the top opening of the mixing box 3. To facilitate the opening and closing of the box sealing plate 14, a handle can be installed on the box sealing plate 14.

[0030] The mixing box 3 is provided with a mixing discharge pipe 7 at a high liquid level, and the mixing discharge pipe 7 can be connected with the feed inlet of the spiral stack body 8 to deliver the sludge mixed with the liquid medicine into the spiral stack body 8 .

[0031] The mixing box 3 is provided with an exhaust port 5 at the position of the box sealing plate 14 at the top, and the exhaust port 5 can absorb the generated gas with the external pipeline to reduce the escape of odorous gas.

[0032] The spiral stack body 8 is arranged obliquely, and the inlet end of the spiral stack body 8 is lower than the outlet end of the spiral stack body 8, that is, the spiral stack body 8 can achieve sludge lifting under the action of the dehydration power assembly 9 and the spiral shaft 23, and achieve solid-liquid separation of the sludge during the lifting process. The separated liquid enters the filter tank 11 below the spiral stack body 8 through the gap between the fixed ring and the floating ring inside the spiral stack body 8, and the filter tank 11 is provided with a filter tank outlet 12 connected to the inside.

[0033] A screw stack body discharge port 10 is provided at the outlet of the screw stack body 8, and a shell structure consisting of a mud discharge port shield 18 is provided at the outlet position of the screw stack body discharge port 10. An inspection window 20 is hinged on the mud discharge port shield 18, a sealing ring body is provided around the inspection window 20, a handle structure is provided on the inspection window 20, and the inspection window 20 is limited on the mud discharge port shield 18 by a quick clamp 19.

[0034] The top of the screw stacking body 8 is provided with a screw stacking body cover plate 15, on which an observation window 17 is installed, and the observation window 17 is a transparent plate body, and a handle structure is installed on the screw stacking body cover plate 15. The top of the screw stacking body 8 is also provided with a screw stacking body exhaust port 16, and the screw stacking body exhaust port 16 is close to the position of the screw stacking body cover plate 15.

[0035] The screw stack body 8 is also connected to a water supply pipe 6 , which supplies water into the screw stack body 8 to flush the internal components of the screw stack body 8 .

[0036] Example 2

[0037] exist Figures 1 to 4 Based on Figure 5 , a spiral press dehydrator that effectively reduces odor emission, wherein the quick clamp 19 includes a clamp base 25 fixedly connected to the spiral press main body discharge port 10, and the clamp base 25 is hinged with a limit plate 28 and a clamp pressure plate 26, respectively, the limit plate 28 is located below the clamp pressure plate 26, and the limit plate 28 and the clamp pressure plate 26 are connected by a hinged pressure plate connecting rod 27; the free end of the limit plate 28 is threadedly connected with a plate body pressure rod 29, and the end of the plate body pressure rod 29 that contacts the plate body is provided with a rubber pressure block. The structure and connection relationship of the remaining parts are the same as those described in any of the aforementioned embodiments, and will not be repeated here to avoid cumbersome writing.

[0038] Based on the above embodiments, the following paragraphs will continue to describe in detail the technical features involved and the functions and roles played by the technical features in the present technical solution, so as to help technicians in this field to fully understand the technical solution and reproduce it.

[0039] In the present application, the top of the mixing box 3 is sealed by a box sealing plate 14. After the box sealing plate 14 is sealed, the odorous gas generated during the mixing process can be sealed inside the mixing box 3, and can be discharged to the external collection pipeline through the exhaust port 5 connected to the box sealing plate 14. The spiral stacking body 8 adopts a rectangular shell, which is provided with a dehydrator cover plate 15 that can be opened and closed and sealed at the top. The circumference of the dehydrator cover plate 15 can be provided with a sealing ring body, and the sealing at the connection position is achieved by the sealing ring body. At the same time, an observation window 17 is provided on the dehydrator cover plate 15, which can realize the observation of the internal working process and state of the spiral stacking body 8, which is convenient for inspection and maintenance.

[0040] In the present application, the spiral stack body 8 is provided with a spiral stack body exhaust port 16 at the top which is connected to the internal space and is convenient for gas discharge. The spiral stack body exhaust port 16 is connected to the external collection pipeline, thereby ensuring that odorous gas will not escape through this place.

[0041] In the present application, the discharge port 10 of the screw stack body is provided with a mud discharge port shield 18, and the mud discharge port shield 18 is connected to an inspection window 20 through a hinge structure, and the inspection window 20 is limited by a quick clamp 19 on the mud discharge port shield 18 to facilitate the opening and closing of the inspection window 20. The sewage is filtered out into the filter tank 11 through the screw stack body 8 and discharged through the filter tank outlet 12 connected to the filter tank 11.

[0042] The quick clamp 19 described in the present application includes a clamp base 25, a clamp pressure plate 26, a pressure plate connecting rod 27, a limit plate 28, and a plate body pressure rod 29. The above structure constitutes a linked connecting rod structure based on the embodiment.

[0043] In the present application, in order to observe the sludge liquid level in the mixing box 3, a liquid level sensor 24 is also arranged on the top of the mixing box 3. The liquid level sensor 24 is located at the high liquid level position of the mixing box 3. When the liquid level sensor 24 detects the liquid level in the mixing box 3, it can transmit the signal to the controller. After receiving the signal, the controller starts the dehydration power assembly 9 to realize the operation of the screw stacking body 8.

[0044] In the present application, the mixing and stirring assembly 4 can also be connected to the controller via an electrical signal, and can be started and shut down under the control of the controller.

[0045] In the present application, the sludge is pumped into the mixing feed pipe 1 and the feed box 2 via a sludge pump. The feed box 2 can reduce the flow rate and buffer the sludge fed into the mixing box 3 to ensure that the sludge entering the mixing box 3 rises slowly from a low liquid level to a high liquid level, and cooperates with the mixing and stirring assembly 4 to achieve stable mixing with the liquid medicine, thereby achieving sufficient preliminary treatment.

[0046] In order to facilitate the opening of the screw stack body cover plate 15 , a gas spring 22 is provided at an inner position of the screw stack body cover plate 15 .

[0047] Finally, although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A spiral stack dehydrator for effectively reducing odor emission, comprising a mixing feed pipe (1), the mixing feed pipe (1) being connected to a mixing box (3) through a feed box (2), a stirring device driven by a mixing stirring assembly (4) being arranged inside the mixing box (3), the mixing box (3) being connected to a spiral stack body (8) through a mixing discharge pipe (7), a spiral shaft (23) being arranged inside the spiral stack body (8), the spiral shaft (23) being driven by a dehydration power assembly (9), the spiral stack body (8) lifting sludge fed from the mixing discharge pipe (7) to a spiral stack body discharge port (10), the sewage in the lifting process entering a filter tank (11) below the spiral stack body (8), the filter tank (11) being provided with a filter tank outlet (12), characterized in that: A box sealing plate (14) is provided at the top opening of the mixing and stirring assembly (4), and an exhaust port (5) communicating with the mixing box (3) is provided on the box sealing plate (14); a box cover plate (15) is provided at the top opening of the screw stacking body (8), and a box exhaust port (16) is provided on the screw stacking body (8) at the box cover plate (15), and the box exhaust port (16) is communicated with the inside of the screw stacking body (8); a mud outlet shield (18) is provided at the material outlet (10) of the screw stacking body, and an inspection window (20) is provided on the mud outlet shield (18).

2. A screw press dehydrator for effectively reducing odor emission according to claim 1, characterized in that: The bottom of the mixing box (3) is connected to a drain pipe (13), and a stop valve is provided on the drain pipe (13); a liquid level sensor (24) is provided at a high liquid level position at the top of the mixing box (3), and the liquid level sensor (24) is connected to a controller via an electrical signal, and the controller is respectively connected to the mixing and stirring assembly (4) and the dehydration power assembly (9) via electrical signals.

3. A screw press dehydrator for effectively reducing odor emission according to claim 2, characterized in that: An observation window (17) is processed on the spiral stack body cover plate (15), and the observation window (17) is made of a transparent plate material.

4. A screw press dehydrator for effectively reducing odor emission according to claim 3, characterized in that: The mixing box (3), the spiral stacking body (8) and the filter tank (11) are all located on the frame (21).

5. A screw press dehydrator for effectively reducing odor emission according to claim 4, characterized in that: The inspection window (20) is locked by a quick clamp (19) on the mud outlet shield (18).

6. A screw press dehydrator for effectively reducing odor emission according to claim 5, characterized in that: The screw stack body (8) is provided with a gas spring (22) at a connection position of the screw stack body cover plate (15) for opening and closing the screw stack body cover plate (15).

7. A screw press dehydrator for effectively reducing odor emission according to claim 6, characterized in that: The quick clamp (19) comprises a clamp base (25) fixedly connected to the discharge port (10) of the screw stack body, and a limit plate (28) and a clamp pressure plate (26) are respectively hingedly connected to the clamp base (25), the limit plate (28) is located below the clamp pressure plate (26), and the limit plate (28) and the clamp pressure plate (26) are connected via a hinged pressure plate connecting rod (27); the free end of the limit plate (28) is threadedly connected to a plate body pressure rod (29), and a rubber pressure block is provided at the end of the plate body pressure rod (29) that contacts the plate body.

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