An automatic wetting system for adding dry powder water reducing agent to water

Abstract

The application provides a dry powder water reducing agent automatic wetting adding system for water agent, which comprises: a quantitative adding system one for adding dry powder water reducing agent into a water reducing agent preparation tank one; a water supply pump, a water inlet of which is connected with a water source, and a water outlet of which is connected with a water inlet of the water reducing agent preparation tank one through a water conveying pipeline; a water reducing agent use tank, a conveying pump one being used for inputting water reducing agent solution output from the water reducing agent preparation tank one into the water reducing agent use tank; a water reducing agent preparation tank two, a quantitative adding system two being used for adding dry powder water reducing agent into the water reducing agent preparation tank two; and a control system being electrically connected with the quantitative adding system one, the water supply pump, the conveying pump one and the quantitative adding system two respectively. The system can effectively realize wetting of the dry powder water reducing agent in the factory, and can put the water reducing agent into production in the mode of water agent, so as to replace the mode of dry powder, and the production stability and the site environment can be obviously improved.

Description

Technical Field

[0001] This invention relates to the field of gypsum board production, and in particular to an automatic wet mixing system for dry powder water-reducing agents into water-based agents. Background Technology

[0002] Currently, gypsum board is widely used in various buildings such as residences, office buildings, shops, hotels, and industrial plants for its advantages of being lightweight, high-strength, fire-resistant, insect-resistant, and easy to process, including interior partitions, wall cladding, ceilings, sound-absorbing panels, floor baseboards, and various decorative panels. However, in the current gypsum board production process, dry powder water-reducing agent is added through a mixing auger using a spring-loaded auger. After thorough mixing by the mixing auger, it is then conveyed to a mixer for pulping. This method results in inaccurate metering of the dry powder water-reducing agent and uneven mixing with the calcined gypsum powder, leading to various product quality problems. Furthermore, dry powder water-reducing agent easily generates dust and has an odor, affecting the environment in dusty areas. Summary of the Invention

[0003] This invention provides an automatic wet mixing system for dry powder water-reducing agents to be added as a water-based agent, in order to solve the technical problems mentioned in the background art: in the current gypsum board production process, the dry powder water-reducing agent is directly added to the calcined gypsum powder, which leads to uneven mixing of the dry powder water-reducing agent and the calcined gypsum powder, causing product quality problems and dust problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automatic wet-mixing system for converting dry powder water-reducing agents into water-based agents, comprising:

[0005] Quantitative addition system 1 and water-reducing agent preparation tank 1 are used to add dry powder water-reducing agent to water-reducing agent preparation tank 1.

[0006] The water supply pump has its inlet connected to a water source, and its outlet connected to the inlet of the water-reducing agent preparation tank 1 via a water delivery pipeline.

[0007] The water-reducing agent usage tank and the first transfer pump are used to input the water-reducing agent solution output from the first water-reducing agent preparation tank into the water-reducing agent usage tank.

[0008] The control system is electrically connected to the quantitative addition system, the water supply pump, and the delivery pump, respectively.

[0009] Preferably, it also includes: a second water-reducing agent preparation tank and a second quantitative addition system, the second quantitative addition system being used to add dry powder water-reducing agent to the second water-reducing agent preparation tank, and the second quantitative addition system being electrically connected to the control system.

[0010] Preferably, the solution output from the water-reducing agent tank is delivered to the mixer via a second delivery pump, and the water delivery pipeline is connected to a flow meter.

[0011] Preferably, it further includes: a water-reducing agent ton bag hoisting system, which is set above the quantitative addition system one and the quantitative addition system two. The ton bag hoisting system is used to hoist and transport the water-reducing agent ton bags to the dry powder water-reducing agent in the quantitative addition system one and the quantitative addition system two. The ton bag hoisting system is electrically connected to the control system.

[0012] Preferably, it also includes a sealed chamber connected above the water-reducing agent preparation tank 1 and the water-reducing agent preparation tank 2, and both the quantitative addition system 1 and the quantitative addition system 2 are located inside the sealed chamber.

[0013] Preferably, the water-reducing agent preparation tank 1, the water-reducing agent preparation tank 2, and the water-reducing agent usage tank are all connected to a stirring device, and the water-reducing agent preparation tank 1, the water-reducing agent preparation tank 2, and the water-reducing agent usage tank are all connected vertically at intervals to a first level gauge and a second level gauge, and the stirring device, the first level gauge, and the second level gauge are all electrically connected to the control system.

[0014] Preferably, a frame is installed on the ground on one side of the water-reducing agent preparation tank, and the water-reducing agent ton bag hoisting system is connected to the frame.

[0015] Preferably, the quantitative addition system one and the quantitative addition system two are arranged at intervals on the left and right, and the upper end of the sealed chamber is provided with a sealed chamber inlet, which is located directly above the feed hopper of the quantitative addition system one or the quantitative addition system two.

[0016] A feeding auxiliary device is installed inside the sealed chamber, directly below the inlet of the sealed chamber. The feeding auxiliary device includes:

[0017] The upper end of the feed pipe is fixedly connected to the inner wall of the upper end of the sealed chamber, and the upper end of the feed pipe is connected to the feed inlet of the sealed chamber.

[0018] The auxiliary ring is slidably sleeved on the outside of the feed pipe;

[0019] At least one vertical electric telescopic rod, the upper end of which is fixedly connected to the inner wall of the upper end of the sealed chamber, and the lower end of which is connected to the upper end of the auxiliary ring;

[0020] Two sets of symmetrical front and rear limiting groups, each limiting group including: a swing rod, the upper end of which is rotatably connected to the inner wall of the left or right side of the feed pipe; and a first spring, the two ends of which are fixedly connected to the swing rod and the inner wall of the feed pipe, respectively.

[0021] Two sets of symmetrical first transmission groups correspond one-to-one with two sets of swing rods. The first transmission group is used to drive the swing rods to swing, and the first transmission group is connected to the auxiliary ring.

[0022] Preferably, the first transmission group includes:

[0023] The first horizontal transmission rod passes through the side wall of the feed pipe in the front-to-back direction;

[0024] Transmission block one is fixedly connected to one end of the first horizontal transmission rod near the swing rod, and the upper end of transmission block one is in contact with the opposite side of the swing rod.

[0025] Transmission block two is fixedly connected to the other end of the first horizontal transmission rod, and transmission inclined surface one is provided on the side of transmission block two that is far apart from each other;

[0026] The upper end of the vertical transmission rod is fixedly connected to the lower end of the auxiliary ring.

[0027] Transmission block three is fixedly connected to the lower end of the vertical transmission rod. Transmission block three is provided with transmission inclined surface two, which is in contact with transmission inclined surface one. The height of the side of transmission inclined surface two closer to the feed pipe is higher than the height of the side of transmission inclined surface two farther away from the feed pipe.

[0028] The second spring is sleeved on the first horizontal transmission rod, and its two ends are fixedly connected to the second transmission block and the side wall of the feed pipe, respectively.

[0029] The beneficial effects of this invention are as follows:

[0030] The main advantage of this invention is its ability to wet-add dry powder water-reducing agent into a liquid form during gypsum board production. Compared to existing methods that directly add dry powder water-reducing agent to calcined gypsum powder, resulting in uneven mixing, this invention achieves a more uniform mixture. This invention utilizes a sealed chamber and prepares a water-reducing agent solution for mixing with calcined gypsum powder, thus improving dust control compared to existing methods. Furthermore, this invention employs a quantitative addition system to add dry powder water-reducing agent directly to the water-reducing agent preparation tank, where it is mixed with water to form a water-reducing agent solution before being mixed with calcined gypsum powder in a mixer. This method offers higher metering accuracy compared to simply adding dry powder water-reducing agent.

[0031] The system of this invention can effectively realize the wet preparation of dry powder water-reducing agent in the factory, and put the water-reducing agent into production in the form of water, thereby replacing the dry powder form into production, which significantly improves the stability of production and the improvement of the on-site environment.

[0032] This invention solves the technical problems of uneven mixing of dry powder water-reducing agent and calcined gypsum powder, which leads to product quality issues and dust generation during the current gypsum board production process.

[0033] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0034] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0035] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0036] Figure 1 This is a schematic diagram of the overall main structure of the present invention;

[0037] Figure 2 A schematic diagram of the structure of the sealed chamber provided with quantitative addition system one and quantitative addition system two of the present invention;

[0038] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0039] Figure 4 This is a schematic diagram of the control logic of the control system of the present invention;

[0040] Figure 5 This is a left view of a feeding auxiliary device in one embodiment of the present invention.

[0041] In the diagram: 1. Frame; 2. Water-reducing agent ton bag hoisting system; 201. Water-reducing agent ton bag; 202. Electric hoist; 203. Slide rail; 204. Hoisting hook; 3. Sealed room; 31. Sealed room inlet; 4. Quantitative addition system one; 401. Feed hopper; 402. Dry powder water-reducing agent storage tank; 403. Gear motor; 404. Turntable; 405. Screw conveyor; 5. Quantitative addition system two; 6. Flow meter; 7. Water pump; 8. Water-reducing agent preparation tank one; 9. Water-reducing agent preparation tank two; 10. Transfer pump one; 11. Water-reducing agent usage tank; 12. 16. Conveying pump 2; 13. First level gauge; 14. Second level gauge; 15. Mixing device; 16. Feeding auxiliary device; 161. Feeding pipe; 162. Auxiliary ring; 163. Vertical electric telescopic rod; 164. Swing rod; 165. First spring; 166. First horizontal transmission rod; 167. Transmission block 1; 168. Transmission block 2; 169. Vertical transmission rod; 1610. Transmission block 3; 1611. Second horizontal transmission rod; 1612. Horizontal connecting rod; 1613. Vertical connecting rod; 1614. Transmission block 4; 1615. Transmission block 5. Detailed Implementation

[0042] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0043] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0044] Example 1, see Figure 1 The present invention provides an automatic wet-mixing system for converting dry powder water-reducing agents into water-based agents, comprising:

[0045] Quantitative addition system 4 and water-reducing agent preparation tank 8 are used to add dry powder water-reducing agent to water-reducing agent preparation tank 8.

[0046] Water pump 7 has its inlet connected to a water source (which can be municipal water), and its outlet connected to the inlet of water-reducing agent preparation tank 8 via a water delivery pipeline.

[0047] Water-reducing agent usage tank 11 and transfer pump 10. The transfer pump 10 is used to input the water-reducing agent solution output from the water-reducing agent preparation tank 8 into the water-reducing agent usage tank 11.

[0048] The control system is electrically connected to the quantitative addition system 4, the water supply pump 7, and the transfer pump 10, respectively.

[0049] Optionally, it also includes: a water-reducing agent preparation tank 2 9 and a metering addition system 2 5. The metering addition system 2 5 is used to add dry powder water-reducing agent to the water-reducing agent preparation tank 2 9, and the metering addition system 2 5 is electrically connected to the control system. The water-reducing agent preparation tank 2 9 can be connected to a separate water pump, or the water pump can be connected to either the water-reducing agent preparation tank 1 8 or the water-reducing agent preparation tank 2 9.

[0050] Optionally, the solution output from tank 11 is delivered to the mixer via pump 12, and the water delivery pipeline is connected to a flow meter 6.

[0051] Optionally, it also includes: a water-reducing agent ton bag hoisting system 2, which is set above the quantitative addition system 4 and the quantitative addition system 5. The ton bag hoisting system 2 is used to hoist and transport the water-reducing agent ton bag 201 to the dry powder water-reducing agent in the quantitative addition system 4 and the quantitative addition system 5. The ton bag hoisting system 2 is electrically connected to the control system.

[0052] Optionally, a sealed chamber 3 is also included, connected above the water-reducing agent preparation tank 1 8 and the water-reducing agent preparation tank 2 9, with the quantitative addition system 1 4 and the quantitative addition system 2 5 both located inside the sealed chamber 3.

[0053] Optionally, the water-reducing agent preparation tank 8, the water-reducing agent preparation tank 9, and the water-reducing agent usage tank 11 are all connected to a stirring device 15. Each of these tanks is equipped with a first level gauge 13 and a second level gauge 14, which are connected vertically at intervals. The stirring device 15, the first level gauge 13, and the second level gauge 14 are all electrically connected to the control system. The stirring device 15 can be an existing stirring device, or... Figure 1 It includes a stirring motor and a stirring rod connected to its output shaft. The stirring motor is located at the upper end of the water-reducing agent preparation tank 18, the water-reducing agent preparation tank 29, or the water-reducing agent usage tank 11. The stirring rod is located inside the water-reducing agent preparation tank 18, the water-reducing agent preparation tank 29, or the water-reducing agent usage tank 11.

[0054] Among them, a frame 1 is installed on the ground on one side of the water-reducing agent preparation tank 8, and the water-reducing agent ton bag hoisting system 2 is connected to the frame 1. Figure 1 As shown, the ton bag hoisting system 2 includes: an electric hoist 202, a water-reducing agent ton bag 201, a slide rail 203, and a hoisting hook 204; the top of the frame 1 is provided with a slide rail 203, which is fixedly connected to the frame 1; the slide rail 202 is provided on the slide rail 203, and the electric hoist 202 is rotatably connected to the slide rail 203; the electric hoist 202 is electrically connected to the control system, and a hoisting hook 204 is connected below the electric hoist 202, which hooks and suspends the water-reducing agent ton bag 201.

[0055] Optionally, the quantitative addition system 4 includes: a feed hopper 401 with an opening at the top, a dry powder water-reducing agent storage tank 402 connected to the lower end of the feed hopper 401, a reduction motor 403 externally located at the bottom of the dry powder water-reducing agent storage tank 402, a turntable 404 internally located in the dry powder water-reducing agent storage tank 402, and the turntable 404 connected to the output shaft of the external reduction motor 403; a screw conveyor 405, the water-reducing agent inlet of the screw conveyor 405 being connected to the water-reducing agent outlet of the dry powder water-reducing agent storage tank 402 via a first pipe, and the water-reducing agent outlet of the screw conveyor 405 being connected to the water-reducing agent inlet of the water-reducing agent preparation tank 8 via a second pipe.

[0056] The main function of this invention is to enable the wet addition of dry powder water-reducing agent into a liquid form during gypsum board production. Compared to existing methods that directly add dry powder water-reducing agent to calcined gypsum powder, resulting in uneven mixing, this invention achieves a more uniform mixture. This invention utilizes a sealed chamber 3 and prepares a water-reducing agent solution for mixing with calcined gypsum powder, thus improving dust control compared to existing methods that directly add dry powder water-reducing agent to calcined gypsum powder. Furthermore, this invention uses a quantitative addition system 4 to add dry powder water-reducing agent to a water-reducing agent preparation tank 8, which then mixes the water-reducing agent solution with water before entering the mixer to mix with calcined gypsum powder. This method offers higher metering accuracy compared to simply adding dry powder water-reducing agent.

[0057] The working principle and beneficial effects of the above scheme are as follows:

[0058] Upon arrival at the factory, the dry powder water-reducing agent is delivered in ton bags / ton packages. The water-reducing agent ton bag hoisting system 2 is used to hoist the entire ton bag 201 above the quantitative addition system 4. After hoisting, the sealed chamber 3 is closed. The control system adjusts the frequency of the water pump 7 and the reduction motor 403 of the quantitative addition system 4 to ensure that the dry powder water-reducing agent and water enter the water-reducing agent preparation tank 8 at a fixed ratio, thus achieving online dynamic preparation of the water-reducing agent. (Quantitative addition system 5 and water-reducing agent preparation tank 9 serve as backup systems).

[0059] The prepared water-reducing agent is transported to the water-reducing agent usage tank 11 by the first transfer pump 10, and the second transfer pump 12 outputs the water-reducing agent from the water-reducing agent usage tank 11 to the mixer according to the amount required for production.

[0060] When the liquid level in the water-reducing agent tank 11 is lower than the low level, the second level gauge 14 connected to the water-reducing agent tank 11 responds, and the first transfer pump 10 automatically starts to transfer the water-reducing agent from the preparation tank (water-reducing agent preparation tank 8 or water-reducing agent preparation tank 9) to the water-reducing agent tank 11; when the liquid level in the water-reducing agent tank 11 is higher than the high level, the first level gauge 13 connected to the water-reducing agent tank 11 responds, and the first transfer pump 10 automatically stops conveying.

[0061] When the water-reducing agent preparation tank 8 reaches the low level, the second level gauge 14 connected to the water-reducing agent preparation tank 8 responds, and the water pump 7 and the quantitative addition system 4 automatically start to carry out the water-reducing agent preparation work; when the water-reducing agent preparation tank 8 reaches the high level, the first level gauge 13 connected to the water-reducing agent preparation tank 8 responds, and the water pump 7 and the quantitative addition system 4 automatically stop.

[0062] The system of this invention can effectively realize the wet preparation of dry powder water-reducing agent in the factory, and put the water-reducing agent into production in the form of water, thereby replacing the dry powder form into production, which significantly improves the stability of production and the improvement of the on-site environment.

[0063] This invention solves the technical problems of uneven mixing of dry powder water-reducing agent and calcined gypsum powder, which leads to product quality issues and dust generation during the current gypsum board production process.

[0064] Example 2, based on Example 1, such as Figure 5 As shown, the quantitative addition system 4 and quantitative addition system 5 are arranged at intervals on the left and right. The upper end of the sealed chamber 3 is provided with a sealed chamber inlet 31 (wherein, an automatic opening and closing door can be set at the sealed chamber inlet 31. When the water-reducing agent ton bag 201 reaches the unloading position, the opening and closing door is closed, and only part of the structure of the water-reducing agent ton bag hoisting system 2 (such as the hoisting rope) is allowed to pass through). The sealed chamber inlet 31 is located directly above the feed hopper 401 of the quantitative addition system 4 or the quantitative addition system 5.

[0065] A feeding auxiliary device 16 is installed inside the sealed chamber 3, directly below the inlet 31 of the sealed chamber. The feeding auxiliary device 16 includes:

[0066] The upper end of the feed pipe 161 is fixedly connected to the inner wall of the upper end of the sealed chamber 3, and the upper end of the feed pipe 161 is connected to the feed inlet 31 of the sealed chamber.

[0067] Auxiliary ring 162 is slidably sleeved on the outside of feed pipe 161;

[0068] At least one vertical electric telescopic rod 163, the upper end of which is fixedly connected to the inner wall of the upper end of the sealed chamber 3, and the lower end of which is connected to the upper end of the auxiliary ring 162;

[0069] Two sets of symmetrical front and rear limiting groups, each limiting group includes: a swing rod 164, the upper end of which is rotatably connected to the inner wall of the left or right side of the feed pipe 161; and a first spring 165, the two ends of which are fixedly connected to the swing rod 164 and the inner wall of the feed pipe 161, respectively.

[0070] Two sets of symmetrical first transmission groups correspond one-to-one with two sets of swing rods 164. The first transmission group is used to drive the swing rods 164 to swing. The first transmission group is connected to the auxiliary ring 162.

[0071] Preferably, the first transmission group includes:

[0072] The first horizontal transmission rod 166 passes through the side wall of the feed pipe 161 in the front-to-back direction;

[0073] Transmission block 167 is fixedly connected to one end of the first horizontal transmission rod 166 near the swing rod 164, and the upper end of transmission block 167 contacts the opposite side of the swing rod 164.

[0074] Transmission block 2 168 is fixedly connected to the other end of the first horizontal transmission rod 166, and a transmission inclined surface 1 is provided on the side of transmission block 2 168 that is far apart from each other.

[0075] The upper end of the vertical transmission rod 169 is fixedly connected to the lower end of the auxiliary ring 162;

[0076] Transmission block 3 1610 is fixedly connected to the lower end of vertical transmission rod 169. Transmission block 3 1610 is provided with transmission inclined surface 2, which is in contact with transmission inclined surface 1. The height of the side of transmission inclined surface 2 near the feed pipe 161 is higher than the height of the side of transmission inclined surface 2 away from the feed pipe 161.

[0077] The second spring is sleeved on the first horizontal transmission rod 166, and the two ends of the second spring are fixedly connected to the transmission block 168 and the side wall of the feed pipe 161, respectively.

[0078] Figure 5 for Figure 1 The left view of part of the structure, in which the water-reducing agent ton bag is shown from the left side;

[0079] To facilitate the entry of the water-reducing agent ton bag 201, the size of the feed pipe 161 is larger than the size of the water-reducing agent ton bag 201. In order to avoid excessive shaking of the water-reducing agent ton bag 201 and to protect it from falling and damage to the feed hopper 401 and the corresponding water-reducing agent preparation tank 8 and water-reducing agent preparation tank 9, the water-reducing agent ton bag 201 is designed to prevent it from falling and damaging the feed hopper 401 and the corresponding water-reducing agent preparation tank 8 and water-reducing agent preparation tank 9.

[0080] The working principle and beneficial effects of the above technical solution are as follows:

[0081] 1. The water-reducing agent ton bag 201 enters the feeding pipe 161 through the inlet of the sealed chamber 3, and then reaches the feeding position of the feeding hopper 401 of the quantitative addition system 1 4 or quantitative addition system 2 5 through the feeding pipe 161 for unloading; wherein, the controllable vertical electric telescopic rod 163 extends downward, driving the auxiliary ring 162 to move downward, the auxiliary ring 162 drives the vertical transmission rod 169 and the transmission block 3 1610 to move downward, the transmission block 3 1610 squeezes the corresponding transmission block 2 168, so that the corresponding transmission block 2 168 and the first horizontal transmission rod 166 approach the corresponding swing rod 164, so that the swing rod 164 approaches the water-reducing agent ton bag 201, limiting the water-reducing agent ton bag 201 to prevent excessive shaking of the water-reducing agent ton bag 201, and also to achieve fall protection for the water-reducing agent ton bag 201;

[0082] 2. The vertical electric telescopic rod 163 can also be controlled to move up and down as needed, thereby driving the corresponding transmission block 168 and the first horizontal transmission rod 166 to move back and forth. At the same time, in conjunction with the first spring 165, the swing rod 164 swings continuously, which allows the swing rod 164 to approach the water-reducing agent ton bag 201 and tap it to speed up the discharge.

[0083] 3. The above technical solution uses a single driving component, the vertical electric telescopic rod 163, to enable the swing rods 164 on both sides to achieve the corresponding functions, making control more convenient.

[0084] Example 3, based on Example 2, such as Figure 5 As shown, it also includes two sets of symmetrical second transmission groups, corresponding one-to-one with the two sets of first transmission groups. The second transmission group includes:

[0085] The second horizontal transmission rod 1611 is located below the first horizontal transmission rod 166, and the second horizontal transmission rod 1611 passes through the side wall of the feed pipe 161 in the front-back direction.

[0086] The horizontal connecting rod 1612 is fixedly connected to the side of the vertical transmission rod 169 away from the feed pipe 161;

[0087] The vertical connecting rod 1613 is fixedly connected to the lower end of the horizontal connecting rod 1612;

[0088] Transmission block 4 1614 is fixedly connected to the side of the horizontal connecting rod 1612 near the feed pipe 161. Transmission block 4 1614 is provided with transmission inclined surface 3. A cutting blade is installed at the other end of the second horizontal transmission rod 1611.

[0089] Transmission block 5 1615 is fixedly connected to one end of vertical connecting rod 1613 near feed pipe 161. Transmission inclined surface 4 is provided on the side of transmission block 5 1615 near feed channel, and transmission inclined surface 4 is in contact with transmission inclined surface 3.

[0090] The third spring is sleeved on the second horizontal transmission rod 1611, and the two ends of the third spring are fixedly connected to the transmission block 1614 and the feed channel, respectively.

[0091] Optionally, a screen can also be installed in the feed hopper 401;

[0092] In this embodiment, the water-reducing agent ton bag 201 is positioned with the bag opening facing downwards and the bag opening is tied up;

[0093] The working principle and beneficial effects of the above technical solution are as follows:

[0094] 1. Controlling the vertical electric telescopic rod 163 to move downwards can, on the one hand, achieve the aforementioned limiting of the water-reducing agent ton bag 201. On the other hand, the downward movement of the vertical electric telescopic rod 163 drives the horizontal connecting rod 1612, the vertical connecting rod 1613, and the transmission block five 1615 to move downwards, which can push the corresponding transmission block four 1614 and the second transmission rod closer to the bag opening of the water-reducing agent ton bag 201, so that the cutting knife pierces the bag opening of the water-reducing agent ton bag 201, realizing automatic unloading of the water-reducing agent ton bag 201.

[0095] 2. The above technical solution can realize automatic unloading, limiting, and tapping discharge by a single drive of the vertical electric telescopic rod 163. It has the advantages of multiple functions and is easy to control.

[0096] Example 4, based on any one of Examples 1-3, further includes an electrically connected alarm device. The control system controls the alarm device and the screw conveyor 405 based on a flow meter, and includes:

[0097] The target rotational speed n of the screw conveyor is calculated based on the flow meter and formula (1);

[0098]

[0099] A is the outer diameter of the helical section of the screw conveyor, B is the outer diameter of the non-helical section of the screw conveyor, and C is the pitch of the helix. The filling coefficient of the dry powder water-reducing agent inside the screw conveyor. This refers to the actual density of the dry powder water-reducing agent. K is the inclination angle coefficient of the screw conveyor; K is the preset proportional coefficient (set according to the concentration of the water-reducing agent solution); and Q is the detection value of the flow meter (unit: kg / s). The preset flow loss rate for the screw conveyor (value 0-0.1, set according to the characteristics of the screw conveyor), e is the natural constant with a value of 2.72, and d is the preset particle size of the dry powder water-reducing agent. The density of the air inside the water-reducing agent preparation tank is given by E, where E is the air resistance coefficient (unit: N / s). 2 m 4 D is The corresponding baseline value; The actual dry powder water-reducing agent concentration near the inlet in the water-reducing agent preparation tank. The theoretical dry powder water-reducing agent concentration near the inlet in tank 8 is given by the water-reducing agent preparation vessel; g is the acceleration due to gravity.

[0100] When the target rotational speed is less than the maximum allowable rotational speed of the screw, the control system controls the screw conveyor to operate, ensuring that the actual rotational speed of the screw is the target rotational speed, and the feed flow rate of the screw conveyor is... When the target rotational speed is greater than or equal to the maximum permissible rotational speed of the screw, the control system will activate the alarm.

[0101] The beneficial effects of the above technical solution are as follows: Based on the flow meter and formula (1), the target rotational speed n of the screw of the screw conveyor is calculated. When the target rotational speed is less than the maximum allowable rotational speed of the screw, the control system controls the screw conveyor to work so that the actual rotational speed of the screw is the target rotational speed. This realizes the automatic adjustment of the screw rotational speed based on the flow meter, so as to ensure reliable feeding in the water-reducing agent preparation tank. It also considers the flying state of the dry powder water-reducing agent itself and the conveying loss of the screw conveyor itself on the actual flow rate of the dry powder water-reducing agent entering the water-reducing agent preparation tank (comparison of the actual dry powder water-reducing agent concentration near the inlet of the water-reducing agent preparation tank with the theoretical dry powder water-reducing agent concentration, the preset flow loss rate of the screw conveyor, and the settling state of the dry powder water-reducing agent itself). Increase the flow rate of the appropriate dry powder water-reducing agent as needed to ensure the reliable concentration of the final water-reducing agent solution.

[0102] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An automatic wet-mixing system for a dry powder water-reducing agent, characterized in that, include: The quantitative addition system (4) and the water-reducing agent preparation tank (8) are provided. The quantitative addition system (4) is used to add dry powder water-reducing agent to the water-reducing agent preparation tank (8). The quantitative addition system (4) is also equipped with a speed reduction motor (403) that can control the amount of dry powder added. The water supply pump (7) has its inlet connected to a water source, and its outlet is connected to the inlet of the water-reducing agent preparation tank (8) via a water delivery pipe. Water-reducing agent usage tank (11) and transfer pump one (10). The transfer pump one (10) is used to input the water-reducing agent solution output from the water-reducing agent preparation tank one (8) into the water-reducing agent usage tank (11); The control system is electrically connected to the quantitative addition system (4), the water supply pump (7), and the delivery pump (10), respectively. It also includes: water-reducing agent preparation tank two (9) and quantitative addition system two (5). The quantitative addition system two (5) is used to add dry powder water-reducing agent to the water-reducing agent preparation tank two (9). The quantitative addition system two (5) is electrically connected to the control system. The solution output from the water-reducing agent tank (11) is delivered to the mixer via a second delivery pump (12), and the water delivery pipeline is connected to a flow meter (6). The water-reducing agent preparation tank 1 (8), the water-reducing agent preparation tank 2 (9), and the water-reducing agent usage tank (11) are all connected to a stirring device (15). The water-reducing agent preparation tank 1 (8), the water-reducing agent preparation tank 2 (9), and the water-reducing agent usage tank (11) are all connected with a first level gauge (13) and a second level gauge (14) at intervals. The stirring device (15), the first level gauge (13), and the second level gauge (14) are all electrically connected to the control system. By adjusting the frequency of the water pump (7) and the geared motor (403) in the quantitative addition system (4) through the control system, the water-reducing agent dry powder and water are fed into the water-reducing agent preparation tank (8) in a fixed ratio, thereby realizing the online dynamic preparation of water-reducing agent; The control system is configured as follows: When the water-reducing agent preparation tank 1 (8) reaches the low material level, the second material level gauge (14) connected to the water-reducing agent preparation tank 1 (8) responds, and the water pump (7) and the quantitative addition system 1 (4) start automatically to carry out the preparation of water-reducing agent. When the water-reducing agent preparation tank 1 (8) reaches the high level, the first level gauge (13) connected to the water-reducing agent preparation tank 1 (8) responds, and the water pump (7) and the quantitative addition system 1 (4) automatically stop. It also includes a sealed chamber (3), which is connected above the water-reducing agent preparation tank 1 (8) and the water-reducing agent preparation tank 2 (9), and the quantitative addition system 1 (4) and the quantitative addition system 2 (5) are both located inside the sealed chamber (3); The quantitative addition system one (4) and quantitative addition system two (5) are arranged at intervals on the left and right. The sealing chamber (3) is provided with a sealing chamber inlet (31) at the upper end. The sealing chamber inlet (31) is located directly above the feed hopper (401) of the quantitative addition system one (4) or the quantitative addition system two (5). A feeding auxiliary device (16) is installed inside the sealed chamber (3) directly below the inlet (31) of the sealed chamber. The feeding auxiliary device (16) is used to assist in feeding the water-reducing agent ton bag (201). The feeding auxiliary device (16) includes: The upper end of the feed pipe (161) is fixedly connected to the inner wall of the upper end of the sealed chamber (3), and the upper end of the feed pipe (161) is connected to the feed inlet (31) of the sealed chamber; The auxiliary ring (162) is slidably sleeved on the outside of the feed pipe (161); At least one vertical electric telescopic rod (163), the upper end of which is fixedly connected to the inner wall of the upper end of the sealed chamber (3), and the lower end of which is connected to the upper end of the auxiliary ring (162); Two sets of symmetrical front and rear limiting groups, the limiting groups include: a swing rod (164), the upper end of which is rotatably connected to the inner wall of the feed pipe (161), and a first spring (165), the two ends of which are fixedly connected to the swing rod (164) and the inner wall of the feed pipe (161) respectively; Two sets of symmetrical first transmission groups correspond one-to-one with two sets of swing rods (164). The first transmission group is used to drive the swing rods (164) to swing. The first transmission group is connected to the auxiliary ring (162). The first transmission group includes: The first horizontal transmission rod (166) passes through the side wall of the feed pipe (161) in the front-back direction; Transmission block 1 (167) is fixedly connected to one end of the first horizontal transmission rod (166) near the swing rod (164), and the upper end of transmission block 1 (167) is in contact with the opposite side of the swing rod (164). Transmission block two (168) is fixedly connected to the other end of the first horizontal transmission rod (166), and transmission inclined surface one is provided on the side of transmission block two (168) that is far away from each other; The upper end of the vertical transmission rod (169) is fixedly connected to the lower end of the auxiliary ring (162); Transmission block three (1610) is fixedly connected to the lower end of the vertical transmission rod (169). Transmission block three (1610) is provided with transmission inclined surface two. Transmission inclined surface two is in contact with transmission inclined surface one. The height of the side of transmission inclined surface two that is close to the feed pipe (161) is higher than the height of the side of transmission inclined surface two that is far away from the feed pipe (161). The second spring is sleeved on the first horizontal transmission rod (166), and the two ends of the second spring are fixedly connected to the transmission block (168) and the side wall of the feed pipe (161), respectively. It also includes two sets of symmetrical second transmission groups, corresponding one-to-one with the two sets of first transmission groups. The second transmission groups include: The second horizontal transmission rod (1611) is located below the first horizontal transmission rod (166), and the second horizontal transmission rod (1611) passes through the side wall of the feed pipe (161) in the front-back direction; The horizontal connecting rod (1612) is fixedly connected to the side of the vertical transmission rod (169) away from the feed pipe (161); The vertical connecting rod (1613) is fixedly connected to the lower end of the horizontal connecting rod (1612); The transmission block four (1614) is fixedly connected to the side of the horizontal connecting rod (1612) near the feed pipe (161). The transmission block four (1614) is provided with a transmission inclined surface three, and a cutting blade is installed at the other end of the second horizontal transmission rod (1611). Transmission block five (1615) is fixedly connected to one end of vertical connecting rod (1613) near the feed pipe (161). Transmission inclined surface four is provided on the side of transmission block five (1615) near the feed channel, and transmission inclined surface four contacts transmission inclined surface three. The third spring is sleeved on the second horizontal transmission rod (1611), and the two ends of the third spring are fixedly connected to the transmission block four (1614) and the feed channel, respectively.

2. The automatic wet-mixing system for a dry powder water-reducing agent as described in claim 1, characterized in that, Also includes: The water-reducing agent ton bag hoisting system (2) is set above the quantitative addition system one (4) and the quantitative addition system two (5). The water-reducing agent ton bag hoisting system (2) is used to hoist and transport the water-reducing agent ton bag (201) to add dry powder water-reducing agent to the quantitative addition system one (4) and the quantitative addition system two (5). The water-reducing agent ton bag hoisting system (2) is electrically connected to the control system.

3. The automatic wet-mixing system for a dry powder water-reducing agent as described in claim 2, characterized in that, A frame (1) is installed on the ground on one side of the water-reducing agent preparation tank (8), and the water-reducing agent ton bag hoisting system (2) is connected to the frame (1).

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