Spring reset type mine dust fall agent adding pump
The pneumatic pump design with a spring-reset structure solves the problem of malfunction in pneumatic dust suppressant adding pumps, enabling continuous delivery and efficient operation of dust suppressants, and improving the efficiency and reliability of dust removal equipment in coal mines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2026-03-24
AI Technical Summary
Existing pneumatic dust suppressant dosing pumps are prone to freezing when the reversing valve core is at its dead point, resulting in downtime, low operating efficiency, and inability to recover automatically.
It adopts a spring-reset structure, and forms a pulse unit through the combination of the first pneumatic control valve, the second pneumatic control valve, the exhaust valve and the buffer tank. This unit works in conjunction with the execution unit to avoid dead spots and ensure continuous operation of the pump.
It effectively prevents pump malfunctions, improves work continuity and efficiency, reduces failure rate and maintenance frequency, and makes maintenance more convenient.
Smart Images
Figure CN224032640U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of coal mine dust removal, especially relates to a spring reset type mine dust fall agent adding pump. BACKGROUND
[0002] A large amount of dust is generated during coal mining, and coal mine dust has occupational hazards and explosion safety hazards. Therefore, dust prevention measures are one of the important operations of coal mine production. The main way of dust reduction at present is to spray water mist, and dust fall agent is added in the water mist to pursue better dust reduction effect. At present, in order to avoid safety hazards caused by misfire, most dust fall agent adding pumps are pneumatic type. The pump is reciprocated by a cylinder to push a plunger cylinder, and dust fall agent is sucked in and output through two one-way valves at one end of the plunger cylinder. The air pressure required for the reciprocating motion of the cylinder is realized by the left and right movement of the valve core of a reversing valve to supply air to the left and right of the cylinder, but there is a dead point position (as shown in the description) in the movement of the valve core of the reversing valve, and when the valve core of the reversing valve is at the dead point position, the cylinder is locked because it cannot inhale and exhale, the travel switch cannot be touched, the reversing air pressure is cut off, and a dead cycle is formed, and then the machine is dead. This situation usually occurs when the machine is stopped, and the air pressure decreases gradually when the machine is stopped. When the valve core moves to the dead point position, the air pressure decreases to less than the driving pressure, causing the machine to stop. This fault cannot be started again even if the air supply is restarted. Only the valve core of the reversing valve can be manually pushed, which affects the work progress and reduces the work efficiency. Figure 5 CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at providing a spring reset type mine dust fall agent adding pump to solve the technical problems in the background.
[0004] To achieve the above-mentioned purpose, the specific technical scheme of the spring reset type mine dust fall agent adding pump of the utility model is as follows:
[0005] A spring reset type mine dust fall agent adding pump, comprising an execution unit and a pulse unit, the execution unit is in communication with an external storage reservoir containing dust fall agent, and the pulse unit is in communication with an external air source and provides power to the execution unit. The execution unit includes a cylinder and a plunger cylinder, the telescopic rod of the cylinder is connected with the plunger cylinder, and an inlet and outlet one-way valve is connected to the plunger cylinder. A reset member is arranged between the plunger cylinder and the cylinder piston. The inlet and outlet one-way valve includes a first one-way valve and a second one-way valve connected to one end of the plunger cylinder, and the first one-way valve is in communication with the storage reservoir. The pulse unit includes a first air control valve and a second air control valve connected to one end of the cylinder opposite the plunger cylinder, and a buffer tank is connected between the first air control valve and the second air control valve, and the cylinder is connected with the outside through the first air control valve. The first air control valve and the second air control valve are connected with the external air source, and the external air source is connected with the buffer tank through the second air control valve, and an exhaust valve is connected to the second air control valve.
[0006] Further, the reset member is a reset spring.
[0007] Further, the exhaust valve is a first speed regulating valve.
[0008] Further, the second pneumatic control valve is communicated with a second speed regulating valve on a connecting pipe of an external air source.
[0009] The spring reset type mine dust fall agent adding pump has the following advantages:
[0010] The first pneumatic control valve, the second pneumatic control valve, the exhaust valve and the buffer tank are combined to form a pulse unit, and the pulse unit cooperates with the execution unit to work, so that the execution unit works for a long time and effectively. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 The spring reset type mine dust fall agent adding pump structure schematic view of the utility model;
[0012] Figure 2 The buffer tank inflation schematic view of the utility model;
[0013] Figure 3 The cylinder compression reset spring schematic view of the utility model;
[0014] Figure 4 The reset spring pushes the cylinder reset schematic view of the utility model;
[0015] Figure 5 The prior art structure schematic view of the utility model.
[0016] Marking in the drawing:
[0017] 1, the first pneumatic control valve, 2, the cylinder, 3, the reset spring, 4, the plunger cylinder, 5, the import and export check valve, 51, the first check valve, 52, the second check valve, 6, the buffer tank, 7, the second pneumatic control valve, 8, the first speed regulating valve, 9, the second speed regulating valve. DETAILED DESCRIPTION
[0018] In order to better understand the purpose, structure and function of the utility model, the spring reset type mine dust fall agent adding pump of the utility model is further described in detail below in conjunction with the drawings.
[0019] As Figures 1 to 4As shown, the utility model discloses a spring reset formula mine dust fall agent adds pump, including execution unit and pulse unit, and the execution unit is communicated with the storage of external containing dust fall agent, and using execution unit can reach the conveying of dust fall agent in the storage of the dust fall agent of execution unit. And pulse unit is communicated with external air source and provides power to execution unit, so that execution unit works normally. Specifically, execution unit includes cylinder 2 and plunger cylinder 4, and the telescopic rod of cylinder 2 is connected with plunger cylinder 4. Meanwhile, the inlet and outlet check valve 5 is communicated on plunger cylinder 4. And the inlet and outlet check valve 5 is composed of the first check valve 51 and the second check valve 52 communicated at one end of plunger cylinder 4, and the first check valve 51 is communicated with the storage, and the second check valve 52 is used to discharge the dust fall agent in plunger cylinder 4.
[0020] As Figure 1 shown, when plunger cylinder 4 needs to inhale the dust fall agent in the storage, start cylinder 2, cylinder 2 pushes plunger cylinder 4 to move left, first check valve 51 opens, second check valve 52 closes, and the dust fall agent in the storage is inhaled into plunger cylinder 4 through first check valve 51. When the dust fall agent inhaled into plunger cylinder 4 needs to be discharged, control the piston of cylinder 2 to move right, the piston of cylinder 2 moves right and drives the piston on plunger cylinder 4 to move right through its telescopic rod, first check valve 51 closes, second check valve 52 opens, and the dust fall agent in plunger cylinder 4 is discharged through second check valve 52.
[0021] As Figure 1 and Figure 2 shown, the pulse unit connected between external air source and execution unit includes the first air control valve 1 and the second air control valve 7 communicated at one end of cylinder 2 relative to plunger cylinder 4, and the first air control valve 1 and the second air control valve 7 are communicated with buffer tank 6, and cylinder 2 is communicated with the outside through first air control valve 1. And the first air control valve 1 and the second air control valve 7 are connected with external air source. Among them, external air source is directly communicated with buffer tank 6 through second air control valve 7, and exhaust valve is also connected on second air control valve 7.
[0022] As Figure 2 shown, when needing to fill air in buffer tank 6, external air source directly fills air in buffer tank 6 through second air control valve 7, first air control valve 1 is in the closed state at this time. When the air pressure in buffer tank 6 reaches the starting pressure of first air control valve 1. As Figure 3As shown, the first gas control valve 1 is reversed, the external gas source enters the cylinder 2 through the first gas control valve 1, starts to push the piston in the cylinder 2 to move to the right, and the cylinder 2 pushes the dust suppressant in the plunger cylinder 4 to be discharged through the second one-way valve 52. It should be noted that the gas source entering the cylinder 2 will push the second gas control valve 7 to reverse, at this time the gas in the buffer tank 6 will be discharged through the exhaust valve of the second gas control valve 7. As the gas pressure in the buffer tank 6 gradually decreases, when the gas pressure in the buffer tank 6 is lower than the starting pressure of the first gas control valve 1, the first gas control valve 1 will reset under the action of the spring inside, and the second gas control valve 7 will also reset under the action of its own spring, and the buffer tank 6 enters the inflation state again.
[0023] It should be noted that the exhaust valve is the first speed regulating valve 8, and the setting of the first speed regulating valve 8 can control and adjust the exhaust speed of the gas in the buffer tank 6.
[0024] In order to realize the reset of the piston in the cylinder 2 and achieve the reciprocating movement of the piston in the cylinder 2, a reset member is arranged between the plunger cylinder 4 and the telescopic rod of the cylinder 2. When the cylinder 2 pushes the plunger cylinder 4 to move to the right, the reset member will be compressed with the telescopic rod of the cylinder 2. When the buffer tank 6 enters the inflation state, the cylinder 2 is connected with the outside through the first gas control valve 1, the compressed reset member will push the piston in the cylinder 2 to move to the left through the telescopic rod of the cylinder 2, and the reset is completed. When the piston in the cylinder 2 moves to the left, the telescopic rod of the cylinder 2 will also drive the piston in the plunger cylinder 4 to move to the left, and the first one-way valve 51 is opened, so that the dust suppressant in the external storage device is sucked into the plunger cylinder 4, so as to achieve the purpose of continuous conveying of the dust suppressant. In the embodiment, the reset member is preferably a reset spring 3, one end of the reset spring 3 is connected with the telescopic rod of the cylinder 2 through a connecting plate, so that when the telescopic rod of the cylinder 2 moves, the reset spring 3 will be compressed through the connecting plate on the telescopic rod of the cylinder 2.
[0025] In the above, the cooperation of the first gas control valve 1, the second gas control valve 7 and the reset spring 3 makes the present additive pump have no dead point structure when working, so as to prevent the present additive pump from appearing dead machine problem. And the exhaust valve and the buffer tank 6 are non-action elements, so the failure rate is low and the price is low, which effectively improves the service life of the present additive pump. At the same time, only the corresponding parts need to be replaced during maintenance, so the maintenance is more convenient.
[0026] As a further improvement, a second speed regulating valve 9 is communicated on the connecting pipe of the second gas control valve 7 and the external gas source. The second speed regulating valve 9 can control and adjust the time length of conveying gas into the buffer tank 6.
[0027] Use method: when the dust faller in the plunger pump needs to be discharged, the external gas source will send gas into the buffer tank 6 through the second air control valve 7, when the gas in the buffer tank 6 reaches the opening pressure of the first air control valve 1, the gas pressure in the buffer tank 6 will push the first air control valve 1 to reverse. At this time, the external gas source communicates with the air cylinder 2 through the first air control valve 1, and the external gas source enters the air cylinder 2, and the piston of the air cylinder 2 moves to the right under the action of the external gas source, and the telescopic rod of the air cylinder 2 also pushes the plunger cylinder 4 to move to the right, and the dust faller in the plunger cylinder 4 will be discharged through the second one-way valve 52. When the piston of the air cylinder 2 moves to the right, the telescopic rod of the air cylinder 2 will compress the reset spring 3 through the connecting plate. And the gas source entering the air cylinder 2 will also push the second air control valve 7 to reverse, so that the gas source in the buffer tank 6 communicates with the first speed regulating valve 8 through the second air control valve 7, and the gas source in the buffer tank 6 is discharged, and as the gas pressure in the buffer tank 6 gradually decreases, the first air control valve 1 resets under the action of the spring in it, the external gas source stops sending gas into the air cylinder 2, and the second air control valve 7 resets under the action of the spring in it, so that the buffer tank 6 enters the inflation state again. After the first air control valve 1 resets, the air cylinder 2 communicates with the outside through the first air control valve 1, the telescopic rod of the air cylinder 2 is pushed to reset by the compressed reset spring 3, and the gas in the air cylinder 2 is discharged through the first air control valve 1. When the piston in the air cylinder 2 resets, the piston in the plunger cylinder 4 moves to the left through the telescopic rod of the air cylinder 2, the piston in the plunger cylinder 4 moves to the left, and the first one-way valve 51 opens to suck the dust faller in the external reservoir into the plunger cylinder 4. Thus, the continuous delivery of the dust faller can be realized.
[0028] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed here, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.
Claims
1. A spring-reset type dust suppressant adding pump for mining, characterized in that: It includes an execution unit and a pulse unit. The execution unit is connected to an external storage container for dust suppressant, and the pulse unit is connected to an external air source and provides power to the execution unit. The execution unit includes a cylinder (2) and a piston cylinder (4). The telescopic rod of the cylinder (2) is connected to the piston cylinder (4), and an inlet and outlet check valve (5) is connected to the piston cylinder (4). A reset element is provided between the piston of the plunger cylinder (4) and the piston of the cylinder (2); The inlet and outlet check valve (5) includes a first check valve (51) and a second check valve (52) connected to one end of the plunger cylinder (4), and the first check valve (51) is connected to the storage device; The pulse unit includes a first pneumatic control valve (1) and a second pneumatic control valve (7) connected to one end of the cylinder (2) relative to the piston cylinder (4), and a buffer tank (6) is connected between the first pneumatic control valve (1) and the second pneumatic control valve (7), and the cylinder (2) is connected to the outside through the first pneumatic control valve (1); The first pneumatic control valve (1) and the second pneumatic control valve (7) are both connected to an external air source, and the external air source is connected to the buffer tank (6) through the second pneumatic control valve (7), and an exhaust valve is connected to the second pneumatic control valve (7).
2. The spring-reset type dust suppressant adding pump for mining as described in claim 1, characterized in that: The reset component is a reset spring (3).
3. A spring-reset type dust suppressant adding pump for mining according to claim 2, characterized in that: The exhaust valve is the first speed control valve (8).
4. A spring-reset type dust suppressant adding pump for mining according to claim 3, characterized in that: The second pneumatic control valve (7) is connected to the external air source via a second speed regulating valve (9).