Pneumatic diaphragm pump for pesticide production process

Abstract

The utility model discloses a pneumatic diaphragm pump for a pesticide production process, and relates to the technical field of pesticide production. The diaphragm pump comprises a diaphragm pump body, a T-shaped pipe is fixedly installed at the bottom of the diaphragm pump body, and one end of the T-shaped pipe is fixedly connected with a flow inlet pipe. When liquid is continuously sucked into the T-shaped pipe to be conveyed, the backflow cavity is in a closed state due to blockage of the closing assembly, so that the liquid cannot enter the backflow cavity, the closing assembly descends to push the inflow floating ball to quickly descend, and the pipe opening of the inflow pipe can be closed in time; when the connected liquid subpackaging mechanism does not need to suck liquid, the liquid is quickly pushed back to the interior of the backflow cavity along with re-compression of air, the backflow cavity provides a closed backflow space for residual liquid in the backflow cavity, the sucked liquid in the backflow cavity is prevented from flowing back and returning out of the bottom of the inflow pipe, and the service life of the liquid subpackaging mechanism is prolonged. And further, the continuous suction work of the liquid is stopped in time, so that the flow of the connected split charging mechanism is stopped.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural production technology, and specifically relates to a pneumatic diaphragm pump used in the pesticide production process. Background Technology

[0002] Pesticides are chemically synthesized substances or mixtures of substances and their preparations used to prevent, eliminate, or control diseases, insects, weeds, and other harmful organisms that endanger agriculture and forestry, as well as to purposefully regulate the growth of plants and insects. In the pesticide production process, various reagents need to be added for proportioning, and some pesticides are slightly corrosive, requiring the use of pneumatic diaphragm pumps with corrosion-resistant properties to transport pesticides. The working principle of pneumatic diaphragm pumps is based on compressed air driving the diaphragm to reciprocate within the pump body, thereby realizing the intake and discharge of liquid.

[0003] In the prior art, Chinese patent CN219034958U discloses a low-energy-consumption pneumatic diaphragm pump, including a pneumatic diaphragm pump body. A housing is fixedly connected to the right side of the pneumatic diaphragm pump body, and a bent pipe is connected to the bottom left side of the housing. The end of the bent pipe away from the housing is connected to the air inlet pipe of the pneumatic diaphragm pump body. In practical use, this invention can achieve the effect of actively generating gas without the need for an external air pump to power the pneumatic diaphragm pump body. This not only saves energy consumption of the air pump but also facilitates user installation of the pneumatic diaphragm pump body, thereby improving its convenience.

[0004] During the production process, a large amount of pesticide liquid after production needs to be centrally transported to the packaging mechanism by a pneumatic diaphragm pump for packaging. The liquid transport flow rate usually needs to be coordinated with the packaging mechanism. If backflow occurs during the transport process, it will affect the flow stop effect of liquid transport and packaging. Furthermore, if the inlet and outlet are not closed in time, the liquid may accumulate inside the pipeline and cannot be completely discharged.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a pneumatic diaphragm pump for pesticide production process to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model relates to a pneumatic diaphragm pump for pesticide production, comprising a diaphragm pump body, a T-shaped tube fixedly installed at the bottom of the diaphragm pump body, an inlet pipe fixedly connected to one end of the T-shaped tube, and an outlet pipe fixedly connected to the other end of the T-shaped tube. The inlet pipe and the outlet pipe are respectively provided with an inlet cavity and an outlet cavity. A sealing component is provided inside the inlet pipe, and a reflux cavity is opened inside the inlet pipe. The inlet cavity is connected to the inside of the T-shaped tube, and an inlet float is provided inside the inlet cavity.

[0009] Furthermore, the sealing assembly includes a sealing cylinder, the output end of which is provided with a telescopic column, and one end of the telescopic column is fixedly connected to a ball-holding sleeve that fits into the reflux cavity;

[0010] The ball-holding sleeve has a ball groove inside, the ball-holding sleeve is hemispherical, and the ball groove and the inlet float are arranged concentrically.

[0011] Furthermore, the diaphragm pump body includes a pressure chamber, and a diaphragm is disposed inside the pressure chamber;

[0012] A booster cylinder is fixedly installed on the top of the diaphragm pump body. A piston rod is provided inside the booster cylinder. A connecting block is fixedly connected to one end of the piston rod, and the bottom of the connecting block is fixedly connected to the diaphragm. The bottom of the air pressure chamber is connected to the inside of the T-tube.

[0013] Furthermore, an outflow float is provided inside the outflow cavity, and a connecting rod is provided inside the outflow pipe. The outflow float is coaxially arranged with the outflow cavity, and one end of the connecting rod extends to the outside of the outflow pipe.

[0014] Furthermore, a locking screw is threaded to the top of the outlet pipe, and a locking ball sleeve is fixedly connected to the bottom of the locking screw. The locking ball sleeve is hemispherical.

[0015] Furthermore, the locking ball sleeve has a top pressure groove inside that corresponds to the outflow float.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model, by adding a reflux chamber inside the inlet pipe and cooperating with the sealing component, allows the T-shaped pipe to continuously draw in liquid for transportation. The sealing component blocks the reflux chamber, preventing liquid from entering it. The descending sealing component pushes the inlet float to descend rapidly, thus sealing the inlet pipe opening in time. When the connected liquid dispensing mechanism no longer needs to draw in liquid, the air is compressed again, causing the liquid to be quickly pushed back into the reflux chamber. The reflux chamber provides a closed reflux space for the remaining liquid, preventing the already drawn-in liquid from flowing back out from the bottom of the inlet pipe, thereby stopping the continued drawing of liquid and stopping the flow of the connected dispensing mechanism.

[0018] 2. In this utility model, the connecting rod is inserted symmetrically into the transverse conveying port of the outlet pipe. When the liquid passes through, the connecting rod rotates. As the diaphragm continues to move repeatedly to discharge the remaining liquid, the movement of the connecting rod is observed to determine whether there is liquid flow inside the outlet pipe. When the connecting rod is relatively stationary, the locking screw is rotated to extend it into the outlet pipe until the locking ball sleeve presses against the top of the outlet float, pushing it downward in a straight line until it closes the outlet port, preventing the liquid inside the connecting channel at the end of the outlet from flowing back again.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the exploded structure of the diaphragm pump body of this utility model;

[0023] Figure 3 This is a schematic diagram of the front sectional structure of this utility model;

[0024] Figure 4 This is a three-dimensional cross-sectional view of the inlet pipe of this utility model;

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Diaphragm pump body; 2. T-tube; 3. Inlet pipe; 4. Outlet pipe; 5. Inlet cavity; 6. Outlet cavity; 7. Sealing assembly; 8. Return cavity; 9. Inlet float; 101. Sealing cylinder; 102. Telescopic column; 103. Ball retainer sleeve; 104. Ball groove; 205. Air pressure chamber; 206. Diaphragm; 207. Booster cylinder; 208. Piston rod; 209. Connecting block; 20. Outlet float; 21. Linkage rod; 22. Locking screw; 23. Locking ball sleeve; 24. Top pressure groove. Detailed Implementation

[0027] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0028] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0029] Please see Figures 1-4 As shown, this utility model is a pneumatic diaphragm pump for pesticide production, including a diaphragm pump body 1. A T-shaped tube 2 is fixedly installed at the bottom of the diaphragm pump body 1. One end of the T-shaped tube 2 is fixedly connected to an inlet pipe 3, and the other end of the T-shaped tube 2 is fixedly connected to an outlet pipe 4. The inlet pipe 3 and the outlet pipe 4 are respectively provided with an inlet cavity 5 and an outlet cavity 6. A sealing component 7 is provided inside the inlet pipe 3. A reflux cavity 8 is opened inside the inlet pipe 3. The inlet cavity 5 is connected to the inside of the T-shaped tube 2. An inlet float ball 9 is provided inside the inlet cavity 5.

[0030] In use, the inlet pipe 3 and the outlet pipe 4 are fixedly connected to the inlet and outlet ends of the T-tube 2, respectively. The repeated compression of the air inside the diaphragm pump body 1 drives the inlet float 9 to move up and down repeatedly, causing the inlet of the inlet pipe 4 to open and close, drawing liquid into the T-tube 2. When it is no longer necessary to draw liquid, the inlet float 9 rises to the contact surface with the sealing component 7. Before the air is compressed downwards again, the sealing component 7 descends from the bottom of the return chamber 8, pushing the inlet float 9 downwards until the bottom of the inlet float 9 is close to the inside of the inlet of the inlet pipe 3, thus sealing it. At the same time as the sealing component 7 descends, the return chamber 8 opens. When the air inside the diaphragm pump body 1 is compressed downwards again, the liquid inside the T-tube 2 is pushed along the direction of the inlet chamber 5 to the inside of the return chamber 8, and no longer flows downwards into the inlet pipe 3.

[0031] By adding a return flow chamber 8 inside the inlet pipe 3 and cooperating with the sealing component 7, when the T-tube 2 continuously draws in liquid for transportation, the blockage of the sealing component 7 keeps the return flow chamber 8 in a closed state, thus preventing liquid from entering the interior of the return flow chamber 8. The descent of the sealing component 7 pushes the inlet float 9 to descend rapidly, thereby timely sealing the inlet of the inlet pipe 3. When the connected liquid dispensing mechanism no longer needs to draw in liquid, the air is compressed again, causing the liquid to be quickly pushed back into the return flow chamber 8. The return flow chamber 8 provides a closed return space for the remaining liquid inside, preventing the liquid that has been drawn in from flowing back out from the bottom of the inlet pipe 3, thereby timely stopping the continued drawing of liquid and realizing the stop of flow for the connected dispensing mechanism.

[0032] In one embodiment, for the aforementioned sealing cylinder 101, the sealing assembly 7 includes a sealing cylinder 101, the output end of the sealing cylinder 101 is provided with a telescopic column 102, and one end of the telescopic column 102 is fixedly connected to a ball-holding sleeve 103 that fits with the return cavity 8.

[0033] The ball-holding sleeve 103 has a ball groove 104 inside. The ball-holding sleeve 103 is hemispherical, and the ball groove 104 and the inlet float 9 are arranged concentrically.

[0034] The sealing cylinder 101 is fixedly installed on the top of the inlet pipe 3. When the sealing cylinder 101 is activated, it drives the telescopic column 102 to extend and retract, while simultaneously pushing the ball-holding sleeve 103 at the bottom to descend along the inlet of the bottom of the return cavity 8. As it descends, the inlet of the bottom of the return cavity 8 gradually opens, and the ball groove 104 inside the ball-holding sleeve 103 presses against the top of the inlet float 9, pushing it downward. The extension and retraction of the telescopic column 102 driven by the sealing cylinder 101 causes the ball-holding sleeve 103 to descend, thereby achieving the effect of moving the inlet float 9 and locking the inlet float 9. This facilitates the control of the movement and stationary state of the inlet float 9, so as to achieve the effect of timely closing of the liquid inlet channel.

[0035] In addition, in specific applications, the inlet float 9 moves in a unidirectional linear motion. When the inlet of the inlet pipe 3 is opened again, the telescopic column 102 can extend and retract in the opposite direction, causing the ball retainer sleeve 103 to quickly return to its original position, and the inlet float 9 returns to its free state.

[0036] In one embodiment, for the above-mentioned air pressure chamber 205, the diaphragm pump body 1 includes an air pressure chamber 205, and a diaphragm 206 is disposed inside the air pressure chamber 205.

[0037] A booster cylinder 207 is fixedly installed on the top of the diaphragm pump body 1. A piston rod 208 is provided inside the booster cylinder 207. A connecting block 209 is fixedly connected to one end of the piston rod 208, and the bottom of the connecting block 209 is fixedly connected to the diaphragm 206. The bottom of the air pressure chamber 205 is connected to the inside of the T-tube 2.

[0038] The diaphragm 206 is located at the center of the air pressure chamber 205, and the connecting block 209 extends from the bottom of the piston rod 208 to the bottom of the diaphragm 206. The piston rod 208 is driven up and down by the booster cylinder 207, which in turn drives the bottom connecting block 209 and the diaphragm 206 to move up and down, thereby achieving repeated compression of air. Based on the compressed air, the diaphragm 206 reciprocates within the diaphragm pump body 1, thereby achieving the intake and discharge of liquid. The diaphragm 206 divides the air pressure chamber 205 inside the diaphragm pump body 1 into two spaces, upper and lower. The diaphragm 206 is used to prevent liquid in the lower half of the air pressure chamber 205 from entering the upper half of the chamber, so as to provide a barrier and corrosion protection for the driving components such as the piston rod 208 in the upper half of the chamber.

[0039] In one embodiment, for the aforementioned outflow float 20, the outflow cavity 6 is provided with an outflow float 20, the outflow pipe 4 is provided with a connecting rod 21, the outflow float 20 is coaxially arranged with the outflow cavity 6, and one end of the connecting rod 21 extends to the outside of the outflow pipe 4.

[0040] The outflow float 20 moves up and down in a straight line as the air inside the diaphragm pump body 1 is repeatedly compressed and the liquid inside the T-tube 2 flows. When the outflow float 20 floats up, the outlet of the outlet pipe 4 opens, and when it floats down, the outlet of the outlet pipe closes. The connecting rod 21 is inserted symmetrically into the transverse delivery port of the outlet pipe 4. When the liquid passes through, the flow of the liquid pushes the connecting rod 21 to rotate. The top of the connecting rod 21 rotates synchronously at the same time as the end of the connecting rod 21 located inside rotates.

[0041] Since the outlet of the outlet pipe 4 is usually connected to the subsequent required conveying channel, the opening and closing state of the outlet pipe 4 can be controlled at the initial end of the outlet by the outlet float 20. By cooperating with the linkage rod 21, it can be observed whether the liquid inside the outlet pipe 4 flows out normally.

[0042] In one embodiment, for the aforementioned locking screw 22, the top of the outlet pipe 4 is threadedly connected to the locking screw 22, and the bottom of the locking screw 22 is fixedly connected to the locking ball sleeve 23, which is hemispherical.

[0043] The locking ball sleeve 23 is located inside the outlet pipe 4 and above the outlet float 20. Rotating the locking screw 22 changes its length extending into the outlet pipe 4, thereby changing the contact distance between the locking ball sleeve 23 and the outlet float 20.

[0044] As the inlet is closed, the diaphragm 206 continues to move repeatedly to discharge the remaining liquid. By observing the movement of the linkage rod 21, it can be determined whether there is any liquid residue inside the outlet pipe 4. When the linkage rod 21 is relatively stationary, the locking screw 22 can be rotated to extend it into the outlet pipe 4 until the locking ball sleeve 23 presses against the top of the outlet float 20, pushing the outlet float 20 downward in a straight line until it moves to the initial end of the outlet. This allows the outlet to be closed in time, preventing the liquid inside the flow channel connected to the outlet at the end of the outlet pipe 4 from flowing back again and affecting the liquid conveying and dispensing efficiency.

[0045] In addition, in specific applications, the locking screw 22 can rotate in the opposite direction to rise and drive the locking ball sleeve 23 to move upward, restoring the free state of the outflow float 20.

[0046] In one embodiment, for the aforementioned top pressure groove 24, the locking ball sleeve 23 has a top pressure groove 24 corresponding to the outflow float 20 inside.

[0047] The locking ball sleeve 23 is a hemisphere with a hollow top pressure groove 24 inside. The top pressure groove 24 corresponds to the upper part of the outflow float 20 to achieve the contact and top pressure effect on the outflow float 20.

[0048] In summary, with the help of the above-mentioned technical solution of this utility model, the telescopic column 102 driven by the closed cylinder 101 extends and retracts, pushing the ball-holding sleeve 103 downward. At the same time as it descends, the bottom inlet of the return flow chamber 8 opens, and the ball groove 104 inside the ball-holding sleeve 103 presses against the top of the inlet float 9, pushing it downward. The inlet float 9 is locked by the cooperation of the telescopic column 102 and the ball-holding sleeve 103, thereby closing the liquid inlet channel. Liquid intake and discharge are achieved by the piston rod 208 driven by the booster cylinder 207 to move up and down, causing the bottom connecting block 209 and the diaphragm 206 to move up and down, thereby repeatedly compressing the air. Compressed air drives the diaphragm 206 to reciprocate within the diaphragm pump body 1, propelling the liquid through the T-tube 2 and causing the outlet float 20 to move vertically up and down, thus achieving liquid intake and discharge. As the liquid passes through the outlet pipe 4, it drives the connecting rod 21 to rotate, allowing observation of the liquid flow. By rotating the locking screw 22, the length extending into the outlet pipe 4 is changed, altering the contact distance between the locking ball sleeve 23 and the outlet float 20. This causes the hollow pressure groove 24 inside to press down on the outlet float 20 vertically, achieving a sealing effect at the initial end of the outlet of the outlet pipe 4.

[0049] Through the above technical solution, 1. By adding a return flow chamber 8 inside the inlet pipe 3 and cooperating with the sealing component 7, when the T-tube 2 continuously draws in liquid for transportation, the blockage of the sealing component 7 keeps the return flow chamber 8 in a closed state, thus preventing liquid from entering the interior of the return flow chamber 8. The descent of the sealing component 7 pushes the inlet float 9 to descend rapidly, thereby sealing the inlet of the inlet pipe 3 in a timely manner. When the connected liquid dispensing mechanism no longer needs to draw in liquid, the air is compressed again, causing the liquid to be quickly pushed back into the return flow chamber 8. The return flow chamber 8 provides a closed return space for the remaining liquid inside, preventing the liquid already drawn in from flowing back out from the bottom of the inlet pipe 3. The liquid intake is stopped in time to stop the flow of the connected dispensing mechanism; 2. The linkage rod 21 is inserted symmetrically into the transverse delivery port of the outlet pipe 4. When the liquid passes through, the linkage rod 21 rotates. When the diaphragm 206 continues to move repeatedly to discharge the remaining liquid, the movement of the linkage rod 21 is observed to determine whether there is liquid flow inside the outlet pipe 4. When the linkage rod 21 is relatively stationary, the locking screw 22 is rotated to extend it into the outlet pipe 4 until the locking ball sleeve 23 presses against the top of the outlet float 20, pushing it to move downward in a straight line until it closes the outlet port to prevent the liquid inside the connecting channel at the end of the outlet from flowing back again.

[0050] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pneumatic diaphragm pump for pesticide production process, comprising a diaphragm pump body (1), a T-shaped tube (2) fixedly installed at the bottom of the diaphragm pump body (1), an inlet pipe (3) fixedly connected to one end of the T-shaped tube (2), an outlet pipe (4) fixedly connected to the other end of the T-shaped tube (2), an inlet cavity (5) and an outlet cavity (6) respectively provided inside the inlet pipe (3) and the outlet pipe (4), a sealing component (7) provided inside the inlet pipe (3), a reflux cavity (8) opened inside the inlet pipe (3), the inlet cavity (5) communicating with the inside of the T-shaped tube (2), and an inlet float ball (9) provided inside the inlet cavity (5).

2. The pneumatic diaphragm pump for pesticide production process according to claim 1, characterized in that, The sealing component (7) includes a sealing cylinder (101), and the output end of the sealing cylinder (101) is provided with a telescopic column (102). One end of the telescopic column (102) is fixedly connected to a ball sleeve (103) that fits into the return cavity (8). The ball-holding sleeve (103) has a ball groove (104) inside. The ball-holding sleeve (103) is hemispherical. The ball groove (104) and the inlet float (9) are arranged concentrically.

3. A pneumatic diaphragm pump for pesticide production process according to claim 1, characterized in that, The diaphragm pump body (1) includes a pressure chamber (205), and a diaphragm (206) is disposed inside the pressure chamber (205); A booster cylinder (207) is fixedly installed on the top of the diaphragm pump body (1). A piston rod (208) is provided inside the booster cylinder (207). A connecting block (209) is fixedly connected to one end of the piston rod (208), and the bottom of the connecting block (209) is fixedly connected to the diaphragm (206). The bottom of the air pressure chamber (205) is connected to the inside of the T-tube (2).

4. A pneumatic diaphragm pump for pesticide production process according to claim 1, characterized in that, An outflow float (20) is provided inside the outflow cavity (6), and a connecting rod (21) is provided inside the outflow pipe (4). The outflow float (20) is coaxially arranged with the outflow cavity (6), and one end of the connecting rod (21) extends to the outside of the outflow pipe (4).

5. A pneumatic diaphragm pump for pesticide production process according to claim 1, characterized in that, The top of the outlet pipe (4) is threaded with a locking screw (22), and the bottom of the locking screw (22) is fixedly connected with a locking ball sleeve (23), which is hemispherical.

6. A pneumatic diaphragm pump for pesticide production process according to claim 5, characterized in that, The locking ball sleeve (23) has a top pressure groove (24) inside that corresponds to the outflow float (20).

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