Dehydration chute convenient for clean coal water filtration
By using a combination of grates and spray nozzles in the dewatering chute, the problem of insufficient dewatering of clean coal was solved, achieving efficient dewatering of clean coal and smooth operation of the chute, thus improving the quality and transportation efficiency of clean coal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI XINNENG COAL PREPARATION TECH CO LTD
- Filing Date
- 2025-03-03
- Publication Date
- 2026-04-21
AI Technical Summary
In existing technologies, insufficient dehydration of refined coal materials leads to a decrease in calorific value and selling price. It also easily causes chute and belt conveyor to stick and become clogged, and the filter screen is prone to clogging, increasing friction and producing coal slag.
Design a dewatering chute with a grate, a receiving box, and a water spray head. The grate is installed at the bottom of the chute, the receiving box has a floor drain pipe at the bottom, and the water spray head is connected to a solenoid valve through a high-pressure water pipe to prevent coal slag from clogging. The grate is fixed by a sleeve to prevent it from falling off.
It achieves full dehydration of clean coal, reduces coal slag production, keeps the chute smooth, avoids blockage, improves the quality of clean coal, and facilitates the replacement and cleaning of the grate.
Smart Images
Figure CN224151355U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coal dewatering, specifically relating to a dewatering chute for convenient filtration of clean coal. Background Technology
[0002] In coal preparation plants, chemical plants, and other workshops, clean coal materials undergo screening and then dewatering using centrifugal dewatering machines. After dewatering, the clean coal is then conveyed via a clean coal chute to a belt conveyor for warehousing or loading onto trucks – a streamlined process. However, relying solely on centrifugal dewatering can result in insufficient dewatering, affecting the calorific value and selling price of the clean coal. Furthermore, insufficiently dewatered clean coal has a high moisture content, easily causing blockages in the chute and belt conveyor. To address this, existing technologies propose installing filters at the bottom of the chute to remove excess water. However, these filters increase the friction of the clean coal, resulting in a large amount of coal slag, which can easily clog the filters, further hindering the flow of clean coal. Utility Model Content
[0003] The purpose of this invention is to solve the problems in the background technology and provide a dewatering chute for convenient filtration of clean coal. This chute achieves dewatering of clean coal material through a grate, which can effectively solve the problem of insufficient dewatering of existing clean coal material. At the same time, the grate is short and will not affect the movement of clean coal.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A dewatering chute for convenient filtration of clean coal includes a trough body, a grate, a receiving box, and a floor drain pipe. The trough body is inclined, and an opening is machined at the bottom of the lower end of the trough body. The grate is installed on the opening. The receiving box is installed at the bottom of the trough body, and the opening on the top surface of the receiving box covers the grate. A floor drain pipe is installed at the bottom of the receiving box. The receiving box is inclined, and a water spray head is installed on the side wall of the higher end of the receiving box. A high-pressure water pipe is connected to the water spray head, and a solenoid valve is installed on the high-pressure water pipe.
[0006] The grate has parallel sleeves welded to both ends, and a support shaft is fitted inside the sleeve. The upper and lower ends of the opening are machined with shaft holes for the support shaft to pass through.
[0007] A vibration motor can be installed at the bottom of the receiving box.
[0008] The beneficial effects of the dewatering chute for convenient fine coal filtration provided by this utility model are:
[0009] (1) By installing a grate at the lower end of the trough, the overall smoothness of the trough can be ensured, and the contact time between the clean coal and the grate can be reduced, thus ensuring the integrity of the clean coal and improving the quality of the clean coal. It can also reduce the falling of coal slag. At the same time, by installing the grate at the lower end of the trough, the water seeping out of the clean coal can pass through the grate and enter the receiving box for unified management. In addition, by setting water spray heads, it can also prevent coal slag from accumulating in the receiving box and causing blockage of the floor drain pipe.
[0010] (2) By installing sleeves at both ends of the grate, the grate can be fixed at the opening to prevent the grate from falling out of the opening during the transfer of clean coal. At the same time, it is also convenient to replace the grate and clean and maintain the inside of the feed box. Attached Figure Description
[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a structural schematic diagram provided for an embodiment of the present utility model.
[0013] Figure 2 This is a schematic diagram of the structure of the comb provided in an embodiment of the present utility model.
[0014] The markings in the diagram are: 1. Tank; 2. Grate; 3. Receiving box; 4. Floor drain pipe; 5. Spray head; 6. High-pressure water pipe; 7. Solenoid valve; 8. Sleeve; 9. Support shaft; 10. Vibration motor. Detailed Implementation
[0015] like Figure 1 As shown, the dewatering chute for convenient fine coal filtration provided in this embodiment includes a trough body 1, a grate 2, a receiving box 3, and a floor drain pipe 4. The trough body 1 is inclined, and an opening is machined at the bottom of the lower end of the trough body 1. The grate 2 is installed on the opening, and the receiving box 3 is installed at the bottom of the trough body 1. The opening on the top surface of the receiving box 3 covers the grate 2. A floor drain pipe 4 is installed at the bottom of the receiving box 3. The receiving box 3 is inclined, and a water spray head 5 is installed on the side wall of the higher end of the receiving box 3. The water spray head 5 can be started intermittently or swing back and forth between the receiving box 3 and the grate 2 to clean the coal slag and prevent coal slag blockage. At the same time, it passes through the grate 2 to prevent fine coal from getting stuck on the grate 2 and affecting the flow of fine coal. A high-pressure water pipe 6 is connected to the water spray head 5, and a solenoid valve 7 is installed on the high-pressure water pipe 6.
[0016] For ease of maintenance, such as Figure 2As shown, parallel sleeves 8 are welded to both ends of the grate 2. A support shaft 9 is fitted inside the sleeve 8. Shaft holes for the support shaft 9 to pass through are machined at both ends of the opening. The support shaft 9 passes through the shaft holes, which on the one hand can lock the grate 2 on the trough 1 to prevent the grate 2 from falling out of the opening and causing the clean coal to block the receiving box 3. On the other hand, it can quickly replace grate 2 of different specifications to adapt to different specifications of clean coal.
[0017] If the water consumption is large or the wastewater treatment cost is high, the vibration motor 10 can be used to replace the spray head 5. The vibration motor 10 is installed at the bottom of the receiving box 3.
[0018] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications and substitutions based on the technical solutions and inventive concepts provided by the present invention should be covered within the scope of protection of the present invention.
Claims
1. A dewatering chute for convenient filtration of refined coal, comprising a chute body (1), a grate (2), a receiving box (3), and a floor drain pipe (4), wherein the chute body (1) is inclined, and an opening is machined at the bottom of the lower end of the chute body (1), the grate (2) is installed on the opening, the receiving box (3) is installed at the bottom of the chute body (1), the top opening of the receiving box (3) covers the grate (2), and a floor drain pipe (4) is installed at the bottom of the receiving box (3), characterized in that: The receiving box (3) is inclined, and a water spray head (5) is installed on the side wall of the higher end of the receiving box (3). A high-pressure water pipe (6) is connected to the water spray head (5), and a solenoid valve (7) is installed on the high-pressure water pipe (6).
2. The dewatering trough for convenient clean coal water filtration according to claim 1, characterized in that: The grate (2) has parallel sleeves (8) welded to both ends. A support shaft (9) is fitted inside the sleeve (8). The upper and lower ends of the opening are machined with shaft holes for the support shaft (9) to pass through.
3. The dewatering trough for convenient clean coal water filtration according to claim 1, characterized in that: A vibration motor (10) can be installed at the bottom of the receiving box (3).