Ammonium sulfate drying and conveying system
By designing the ammonium sulfate drying and conveying system, two sets of drying devices and backup screw conveyors are used to realize the switching of materials, and the parking problem caused by the failure of the weighing and packaging machine is solved, energy consumption and economic losses are reduced, and mechanical structure and maintenance costs are simplified.
Patent Information
- Application Number
- CN202421331011.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-11
AI Technical Summary
The ammonium sulfate drying system is stopped due to failure or maintenance of the weighing packaging machine, resulting in unnecessary energy consumption and economic losses.
An ammonium sulfate drying and conveying system was designed, using two sets of disc dryers and screw conveyors, and equipped with a spare screw conveyor. The materials can be switched through the setting of valves and baffles to avoid parking.
It effectively avoids parking situations caused by malfunction or maintenance of weighing packaging machines, reduces unnecessary energy consumption and economic losses, and simplifies the mechanical structure and reduces maintenance costs.
Smart Images
Figure CN222630515U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of ammonium sulfate production, in particular to an ammonium sulfate drying and conveying system. Background Art
[0002] As an important part of chemical plants, the ammonium sulfate section mainly involves the production of ammonium sulfate, among which ammonium sulfate drying and transportation are necessary process links for ammonium sulfate crystals to eventually form ammonium sulfate products. At present, disc dryers have become the mainstream equipment for ammonium sulfate drying due to their advantages such as small footprint, low energy consumption, and simple operation. The dried material is sent to the hopper via a screw conveyor and falls into a weighing and packaging machine for packaging into bags. However, since the weighing and packaging machine is an electrical device and requires manual cooperation, there will be malfunctions and insufficient manpower. Therefore, once the weighing and packaging machine is shut down for maintenance, the upstream drying equipment can only be forced to stop, causing unnecessary energy consumption and economic losses.
[0003] In view of this, the present utility model is proposed. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides an ammonium sulfate drying and conveying system, which avoids the problem of economic and energy losses caused by the ammonium sulfate drying system due to the maintenance of the weighing and packaging machine and the shutdown of the drying device.
[0005] The technical solution of the present utility model is conceived as follows:
[0006] An ammonium sulfate drying and conveying system comprises a first disc dryer and a second disc dryer; a feed port of the first disc dryer is connected to a feed port of a first screw conveyor, a front discharge port of the first screw conveyor is connected to a first hopper, and a first weighing and packaging machine is arranged below the first hopper; a feed port of the second disc dryer is connected to a feed port of a second screw conveyor, a front discharge port of the second screw conveyor is connected to a second hopper, and a second weighing and packaging machine is arranged below the second hopper; a rear discharge port of the first screw conveyor and a rear discharge port of the second screw conveyor are respectively connected to a front feed port and a rear feed port of a standby screw conveyor, and a front discharge port and a rear discharge port of the standby screw conveyor are respectively connected to the first hopper and the second hopper.
[0007] As an implementation mode, a first valve is installed at the front discharge port of the first screw conveyor, and a second valve is installed at the rear discharge port; a third valve is installed at the front discharge port of the second screw conveyor, and a fourth valve is installed at the rear discharge port.
[0008] As an implementation mode, a first baffle is provided at the front feed port of the spare screw conveyor, and a second baffle is provided at the rear feed port.
[0009] As an implementation method, the feed port and the discharge port of the spare screw conveyor are arranged alternately.
[0010] As an embodiment, the motor of the standby screw conveyor has a reverse control mode for conveying the material in reverse direction to the first hopper and a forward control mode for conveying the material in forward direction to the second hopper.
[0011] As an implementation mode, the first valve, the second valve, the third valve and the fourth valve are all knife-type gate valves.
[0012] As an implementation mode, the first disc dryer, the second disc dryer, the first screw conveyor, the second screw conveyor and the spare screw conveyor are all provided with a water cooling jacket.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. The utility model uses two or more sets of drying devices in conjunction with spare screw conveyors to change the material conveying stroke and switch different weighing and packaging machines for use, thereby avoiding unnecessary losses caused by device shutdown.
[0015] 2. The utility model has a simple mechanical structure, low cost, low maintenance cost, simple and clear process, and convenient operation, and can be used as an effective example of switching the conveying stroke of an ammonium sulfate drying device.
[0016] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.
[0018] Figure 1 It is a structural schematic diagram of the ammonium sulfate drying and conveying system of the utility model.
[0019] Figure 2 The utility model is a schematic diagram of the structure of a spare screw conveyor in the ammonium sulfate drying and conveying system.
[0020] Figure 3 The utility model is a schematic diagram of the process flow of the ammonium sulfate drying and conveying system.
[0021] Markings in the figure:
[0022] 1. The first valve; 2. The second valve; 3. The third valve; 4. The fourth valve; 5. The first baffle; 6. The second baffle; 11. The first disc dryer; 12. The first screw conveyor; 13. The first hopper; 14. The first weighing and packaging machine; 21. The second disc dryer; 22. The second screw conveyor; 23. The second hopper; 24. The second weighing and packaging machine; 31. The spare screw conveyor. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of 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.
[0024] The following embodiments only take the conveying switching of two sets of drying devices as an example. If there are more than two sets of drying devices, the conveying switching can be set according to the structure of this device.
[0025] Example 1
[0026] An ammonium sulfate drying and conveying system, such as Figure 1 As shown: it includes a first disc dryer 11 and a second disc dryer 21; the feed port of the first disc dryer 11 is connected to the feed port of the first screw conveyor 12, the front discharge port of the first screw conveyor 12 is connected to the first hopper 13, and a first weighing and packaging machine 14 is arranged below the first hopper 13;
[0027] The feeding port of the second disc dryer 21 is connected to the feeding port of the second screw conveyor 22, the front discharge port of the second screw conveyor 22 is connected to the second hopper 23, and a second weighing and packaging machine 24 is arranged below the second hopper 23;
[0028] The rear discharge port of the first screw conveyor 12 and the rear discharge port of the second screw conveyor 22 are respectively connected to the front feed port and the rear feed port of the standby screw conveyor 31 , and the front discharge port and the rear discharge port of the standby screw conveyor 31 are respectively connected to the first hopper 13 and the second hopper 23 .
[0029] A first valve 1 is installed at the front discharge port of the first screw conveyor 12 , and a second valve 2 is installed at the rear discharge port.
[0030] The front discharge port of the second screw conveyor 22 is respectively provided with a third valve 3 , and the rear discharge port is provided with a fourth valve 4 .
[0031] like Figure 2As shown, a first baffle 5 is provided at the front feed inlet of the standby screw conveyor 31, and a second baffle 6 is provided at the rear feed inlet.
[0032] As a configuration mode, the feed port and the discharge port of the standby screw conveyor 31 are arranged in a staggered manner.
[0033] The motor of the standby screw conveyor 31 in this case has a reverse control mode for conveying the material in the reverse direction to the first hopper 13 and a forward control mode for conveying the material in the forward direction to the second hopper 23 .
[0034] If the first weighing and packaging machine 14 fails and needs maintenance, start the spare screw conveyor 31, adjust the motor to make its stroke forward, close the first valve 1, open the second valve 2, and transfer the dried ammonium sulfate material to the second weighing and packaging machine 24; if the second weighing and packaging machine 24 needs maintenance, start the spare screw conveyor 31, adjust the motor to make its stroke reverse, close the third valve 3, open the fourth valve 4, and transfer the dried ammonium sulfate material to the first weighing and packaging machine 14.
[0035] In order to facilitate the separation of materials, the first valve 1, the second valve 2, the third valve 3 and the fourth valve 4 are knife-type gate valves.
[0036] Furthermore, the first disc dryer 11, the second disc dryer 21, the first screw conveyor 12, the second screw conveyor 22 and the spare screw conveyor 31 are all provided with water cooling jackets to reduce the temperature of the dried ammonium sulfate material to below 55°C for weighing and packaging.
[0037] The first disc dryer 11 and the second disc dryer 21 are a kind of efficient conduction type continuous drying equipment, which are equipped with air heaters. The saturated steam is used to heat the air as a heat source to dry the water-containing ammonium sulfate material. The multi-layer discs in the first disc dryer 11 and the second disc dryer 21 are arranged alternately up and down. The water-containing ammonium sulfate material falls from the top entrance of the dryer and continuously rotates and flows to the bottom drying disc. At the same time, the heated air counter-currently transfers heat with the water-containing ammonium sulfate material from bottom to top, thereby taking away the moisture of the ammonium sulfate material. The dried ammonium sulfate material falls into the feed port of the screw conveyor below through the bottom discharge port.
[0038] Combine the following Figure 1-3 , introduce the process flow and effect of the system:
[0039] After being dried and cooled by the first disc dryer 11 and the second disc dryer 21, the aqueous ammonium sulfate material falls into the feed port of the first screw conveyor 12 and the second screw conveyor 22 below. The dried ammonium sulfate material is transported to the front discharge port by the augers of the first screw conveyor 12 and the second screw conveyor 22 and falls into the first hopper 13 and the second hopper 23, and then falls into the first weighing and packaging machine 14 and the second weighing and packaging machine 24.
[0040] The first screw conveyor 12 and the second screw conveyor 22 are respectively provided with one feed port and two discharge ports, and combined with the aforementioned valve setting method, it is convenient to switch between different discharge paths.
[0041] The standby screw conveyor 31 is provided with two feed ports and two discharge ports, the feed ports and the discharge ports are arranged alternately to avoid the material passing up and down, and a first baffle 5 and a second baffle 6 are respectively provided at the feed ports (such as Figure 2 As shown in the figure, there is a 5mm hopper spacing between the baffle and the auger to prevent the material from leaking to the front discharge port when entering from the front feed port, or to prevent the material from falling into the rear discharge port when entering from the rear feed port. The spare screw conveyor 31 is provided with forward and reverse functions to meet two different conveying paths.
[0042] The utility model can meet the following three different working conditions:
[0043] Working condition 1: If Figure 1 As shown, in the first drying device, the ammonium sulfate material enters the first disc dryer 11 - the first screw conveyor 12 - the first hopper 13 - the first weighing and packaging machine 14 in sequence. At this time, the first valve 1 is in the open state and the second valve 2 is in the closed state.
[0044] In the second drying device, the ammonium sulfate material enters the second disc dryer 21 - the second screw conveyor 22 - the second hopper 23 - the second weighing and packaging machine 24 in sequence. At this time, the third valve 3 is in the open state, the fourth valve 4 is in the closed state, and the standby screw conveyor 31 is in the closed state.
[0045] Working condition 2: When the first weighing and packaging machine 14 stops due to a fault, the first drying device is switched, such as Figure 1 , Figure 3 As shown, the ammonium sulfate material passes through the first disc dryer 11 to the first screw conveyor 12, the first valve 1 is closed, the second valve 2 is opened, the ammonium sulfate material is sent to the spare screw conveyor 31, the motor is adjusted to make it rotate forward, and the ammonium sulfate material is sent to the second hopper 23 and falls into the second weighing and packaging machine 24; at this time, the second set of drying device operates normally, the third valve 3 is in the open state, the fourth valve 4 is in the closed state, and the two sets of drying devices share the second hopper 23 and the second weighing and packaging machine 24.
[0046] Working condition 3: When the second weighing and packaging machine 24 stops due to a fault, the second drying device is switched, such as Figure 1 , Figure 3 As shown, the ammonium sulfate material passes through the second disc dryer 21 to the second screw conveyor 22, the third valve 3 is closed, the fourth valve 4 is opened, the ammonium sulfate material is sent to the spare screw conveyor 31, the motor is adjusted to reverse, and the ammonium sulfate material is sent to the first hopper 13 and falls into the first weighing and packaging machine 14. At this time, the first set of drying devices operates normally, the first valve 1 is in the open state, and the second valve 2 is in the closed state. The two sets of drying devices share the first hopper 13 and the first weighing and packaging machine 14.
[0047] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be based on the scope defined in the attached claims.
Claims
1. An ammonium sulfate drying and conveying system, characterized in that: The invention comprises a first disc dryer (11) and a second disc dryer (21); the feed port of the first disc dryer (11) is connected to the feed port of the first screw conveyor (12), the front discharge port of the first screw conveyor (12) is connected to the first hopper (13), and a first weighing and packaging machine (14) is arranged below the first hopper (13); the feed port of the second disc dryer (21) is connected to the feed port of the second screw conveyor (22), the front discharge port of the second screw conveyor (22) is connected to the second hopper (23), and a second weighing and packaging machine (24) is arranged below the second hopper (23); the rear discharge port of the first screw conveyor (12) and the rear discharge port of the second screw conveyor (22) are respectively connected to the front feed port and the rear feed port of a spare screw conveyor (31), and the front discharge port and the rear discharge port of the spare screw conveyor (31) are respectively connected to the first hopper (13) and the second hopper (23).
2. The ammonium sulfate drying and conveying system according to claim 1, characterized in that: A first valve (1) is installed at the front discharge port of the first screw conveyor (12), and a second valve (2) is installed at the rear discharge port; a third valve (3) is installed at the front discharge port of the second screw conveyor (22), and a fourth valve (4) is installed at the rear discharge port.
3. The ammonium sulfate drying and conveying system according to claim 1, characterized in that: A first baffle (5) is provided at the front feed inlet of the spare screw conveyor (31), and a second baffle (6) is provided at the rear feed inlet.
4. The ammonium sulfate drying and conveying system according to claim 1, characterized in that: The feed inlet and the discharge outlet of the spare screw conveyor (31) are arranged in a staggered manner.
5. The ammonium sulfate drying and conveying system according to claim 1, characterized in that: The motor of the standby screw conveyor (31) has a reverse rotation control mode for conveying materials in the reverse direction to the first hopper (13) and a forward rotation control mode for conveying materials in the forward direction to the second hopper (23).
6. The ammonium sulfate drying and conveying system according to claim 2, characterized in that: The first valve (1), the second valve (2), the third valve (3) and the fourth valve (4) are all knife-type gate valves.
7. The ammonium sulfate drying and conveying system according to claim 1, characterized in that: The first disc dryer (11), the second disc dryer (21), the first screw conveyor (12), the second screw conveyor (22) and the spare screw conveyor (31) are all provided with water cooling jackets.