Leakage-proof device for metering pump

Abstract

The utility model relates to the technical field of leakage-proof devices, in particular to a leakage-proof device for a metering pump, which comprises a main body mechanism, a sealing mechanism, a functional mechanism and a control mechanism, the sealing mechanism is positioned on one side of the main body mechanism, the functional mechanism is positioned inside the main body mechanism, and the control mechanism is positioned inside the main body mechanism. According to the utility model, the connecting head fixedly arranged on one side of the metering liquid outlet pipeline and the metering liquid inlet pipeline is connected with the pipeline for use, the connecting through hole is formed in the connecting head and is fixed through the screw, and the inner walls of the metering liquid outlet pipeline and the metering liquid inlet pipeline are respectively provided with a circle of limiting material guide block; a limiting material guide block is also arranged in a pipeline used for placing a connecting hose for connection, so that the connecting hose and the pipeline are tightly connected, the diaphragm drives the movable rod to reciprocate in the metering pump main body through the movable disc, and the internal volume of the metering pump main body is periodically changed, so that the internal pressure of the metering pump main body is changed, and liquid flows.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage prevention devices, in particular to a leakage prevention device for a metering pump. Background Art

[0002] Metering pumps, also known as proportional pumps, can be easily and accurately adjusted by adjusting the eccentric distance of the eccentric wheel to change the stroke when the amount of liquid delivered changes. Metering pumps are a special volumetric pump that can meet various strict process needs. The flow rate can be adjusted steplessly within the range of 0-100%. It is used to transport liquids (especially corrosive liquids). Metering pumps are a type of fluid conveying machinery. Its outstanding feature is that it can maintain a constant flow rate that is independent of the discharge pressure. The use of metering pumps can simultaneously complete the functions of conveying, metering and regulation, thereby simplifying the production process. Using multiple metering pumps, several media can be input into the process flow in accurate proportions for mixing. Due to its own prominence, metering pumps have now been widely used in various industrial fields such as petrochemicals, pharmaceuticals, and food.

[0003] As disclosed in the authorization announcement number CN207393401U, a leak-proof device for a metering pump is disclosed, including a metering pump body, a plunger is provided on the metering pump body, a spiral groove is provided at one end of the plunger, the leak-proof device is arranged on the plunger, the leak-proof device includes a sealing sleeve, the sealing sleeve is sleeved on the plunger by screws, and is fixed on the metering pump body, the leak-proof device also includes a plurality of heat sinks, and the heat sinks are evenly sleeved on the sealing sleeve. The leak-proof device of the utility model is sleeved on the metering pump. With the use of the metering pump, the leaked oil enters the heat sink along the spiral groove. With the superposition of the heat sinks, the leaked oil is slowly cooled and solidified. After the leaked oil is cooled and solidified, the heat sink is sealed, so that the subsequent leaked oil is locked in the metering pump. However, during use, the sealing effect is poor and it cannot effectively prevent leakage. For this reason, we propose a leak-proof device for a metering pump to solve the problem that the traditional device has poor sealing effect and cannot effectively prevent leakage. Utility Model Content

[0004] The purpose of the utility model is to provide a leakage prevention device for a metering pump to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A leakage prevention device for a metering pump comprises a main body mechanism, a sealing mechanism, a functional mechanism, and a control mechanism, wherein the sealing mechanism is located at one side of the main body mechanism, the functional mechanism is located inside the main body mechanism, and the control mechanism is located inside the main body mechanism. The main body mechanism comprises a control box, a handle, a base plate, a connecting through hole 1, a fixing screw, a motor, and a metering pump body. The control box is fixedly mounted on the top of the base plate, the handle is fixedly mounted on one side of the control box, the base plate is fixedly mounted on the bottom end of the control box, the connecting through hole 1 is provided inside the base plate, the fixing screw is fixedly mounted on one side of the metering pump body, the motor is fixedly mounted on the top of the control box, and the metering pump body is fixedly mounted on one side of the control box.

[0007] Preferably, the sealing mechanism includes a metering liquid outlet pipe, a metering liquid inlet pipe, a limiting material guide block, a connecting head, a connecting hose, a second connecting through hole, a sealing plug, a first sealing ring, and a second sealing ring. The metering liquid outlet pipe is fixedly installed on one side of the metering pump body, and the metering liquid inlet pipe is fixedly installed on one side of the metering pump body.

[0008] Preferably, the functional mechanism includes an internal partition, a first flow through hole, a second flow through hole, a movable rod, a spring, a movable disk, and a diaphragm. The internal partition is fixedly installed inside the metering pump body, and the first flow through hole is opened inside the internal partition.

[0009] Preferably, the control mechanism includes a connecting pipe, a first limit block, a second limit block, a first ball valve, a second ball valve, a first ball valve pad, and a second ball valve pad. The connecting pipe is fixedly installed inside the metering pump body, and the first limit block is fixedly installed inside the connecting pipe.

[0010] Preferably, the limiting material guide block is fixedly mounted on one side of the inner wall of the metering liquid outlet pipe and the metering liquid inlet pipe, the connecting head is fixedly mounted on one side of the metering liquid outlet pipe and the metering liquid inlet pipe, the connecting hose is fixedly mounted inside the metering liquid outlet pipe and the metering liquid inlet pipe, the second connecting through hole is opened inside the connecting head, the sealing plug is fixedly mounted on one side of the metering pump body, the first sealing ring is fixedly mounted on one side of the sealing plug, and the second sealing ring is fixedly mounted on one side of the sealing plug.

[0011] Preferably, the second flow through hole is opened inside the connecting pipe, the movable rod is fixedly installed on one side of the movable disk, the spring is fixedly installed on one side of the movable rod, the movable disk is fixedly installed inside the control box, and the diaphragm is fixedly installed on one side of the movable rod.

[0012] Preferably, the second limit block is fixedly installed inside the connecting pipe, the first ball valve is fixedly installed on the top of the first ball valve pad, the second ball valve is fixedly installed on the top of the second ball valve pad, the first ball valve pad is fixedly installed inside the connecting pipe, and the second ball valve pad is fixedly installed inside the connecting pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. A leak-proof device for a metering pump is used by fixing a connector on one side of a metering liquid outlet pipe and a metering liquid inlet pipe and connecting the pipe, wherein a connecting through hole is provided inside the connector and fixed by screws, and a circle of limiting guide blocks is provided on the inner walls of the metering liquid outlet pipe and the metering liquid inlet pipe, and a limiting guide block is also provided inside the pipe for placing a connecting hose for connection, so that the two are tightly connected.

[0015] 2. In this leak-proof device for a metering pump, the diaphragm drives the movable rod to make reciprocating motion inside the metering pump body through the movable disk, and the internal volume of the metering pump body changes periodically, thereby changing the internal pressure of the metering pump body and allowing the liquid to flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the metering liquid outlet pipeline of the utility model;

[0019] Figure 4 This is a schematic diagram of the limiting guide block of the utility model;

[0020] Figure 5 It is a schematic diagram of the connecting pipeline of the utility model.

[0021] In the figure: 100, control box; 101, handle; 102, bottom plate; 103, connecting through hole 1; 104, fixing screw; 105, motor; 106, metering pump body; 200, metering liquid outlet pipeline; 201, metering liquid inlet pipeline; 202, limit guide block; 203, connector; 204, connecting hose; 205, connecting through hole 2; 206, sealing plug; 207, first sealing ring; 208, second sealing ring; 300, internal partition; 301, first flow through hole; 302, second flow through hole; 303, movable rod; 304, spring; 305, movable disk; 306, diaphragm; 400, connecting pipeline; 401, first limit block; 402, second limit block; 403, first ball valve; 404, second ball valve; 405, first ball valve pad; 406, second ball valve pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] See also Figure 1-Figure 4 As shown, a technical solution provided by the utility model:

[0024] A leakage prevention device for a metering pump comprises a main body mechanism, a sealing mechanism, a functional mechanism, and a control mechanism, wherein the sealing mechanism is located at one side of the main body mechanism, the functional mechanism is located inside the main body mechanism, and the control mechanism is located inside the main body mechanism. The main body mechanism comprises a control box 100, a handle 101, a base plate 102, a connecting through hole 103, a fixing screw 104, a motor 105, and a metering pump body 106. The control box 100 is fixedly mounted on the top of the base plate 102, the handle 101 is fixedly mounted on one side of the control box 100, the base plate 102 is fixedly mounted on the bottom end of the control box 100, the connecting through hole 103 is provided inside the base plate 102, the fixing screw 104 is fixedly mounted on one side of the metering pump body 106, the motor 105 is fixedly mounted on the top of the control box 100, and the metering pump body 106 is fixedly mounted on one side of the control box 100.

[0025] In this example, preferably, the sealing mechanism includes a metering liquid outlet pipe 200, a metering liquid inlet pipe 201, a limiting guide block 202, a connecting head 203, a connecting hose 204, a second connecting hole 205, a sealing plug 206, a first sealing ring 207, and a second sealing ring 208. The metering liquid outlet pipe 200 is fixedly installed on one side of the metering pump body 106, and the metering liquid inlet pipe 201 is fixedly installed on one side of the metering pump body 106.

[0026] In this example, preferably, the functional mechanism includes an internal partition 300, a first flow hole 301, a second flow hole 302, a movable rod 303, a spring 304, a movable disk 305, and a diaphragm 306, and the internal partition 300 is fixedly installed inside the metering pump body 106, and the first flow hole 301 is opened inside the internal partition 300.

[0027] In this example, preferably, the control mechanism includes a connecting pipe 400, a first limit block 401, a second limit block 402, a first ball valve 403, a second ball valve 404, a first ball valve pad 405, and a second ball valve pad 406, and the connecting pipe 400 is fixedly installed inside the metering pump body 106, and the first limit block 401 is fixedly installed inside the connecting pipe 400.

[0028] In this example, preferably, the limiting guide block 202 is fixedly installed on one side of the inner wall of the metering liquid outlet pipe 200 and the metering liquid inlet pipe 201, the connecting head 203 is fixedly installed on one side of the metering liquid outlet pipe 200 and the metering liquid inlet pipe 201, the connecting hose 204 is fixedly installed inside the metering liquid outlet pipe 200 and the metering liquid inlet pipe 201, the connecting through hole 205 is opened inside the connecting head 203, the sealing plug 206 is fixedly installed on one side of the metering pump body 106, the first sealing ring 207 is fixedly installed on one side of the sealing plug 206, and the second sealing ring 208 is fixedly installed on one side of the sealing plug 206.

[0029] In this example, preferably, the second flow hole 302 is opened inside the connecting pipe 400, the movable rod 303 is fixedly installed on one side of the movable disk 305, the spring 304 is fixedly installed on one side of the movable rod 303, the movable disk 305 is fixedly installed inside the control box 100, and the diaphragm 306 is fixedly installed on one side of the movable rod 303.

[0030] In this example, preferably, the second limit block 402 is fixedly installed inside the connecting pipe 400, the first ball valve 403 is fixedly installed on the top of the first ball valve pad 405, the second ball valve 404 is fixedly installed on the top of the second ball valve pad 406, the first ball valve pad 405 is fixedly installed inside the connecting pipe 400, and the second ball valve pad 406 is fixedly installed inside the connecting pipe 400.

[0031] When in use, a leakage prevention device for a metering pump according to the present embodiment is connected to the metering liquid outlet pipe 200 and the metering liquid inlet pipe 201 by fixing a connector 203 on one side thereof, wherein the connector 203 is provided with a connecting hole 205 inside thereof and fixed by screws, and a circle of limiting guide blocks 202 are provided on the inner walls of the metering liquid outlet pipe 200 and the metering liquid inlet pipe 201, and a limiting guide block 202 is also provided inside the pipe for placing a connecting hose 204 for connection, so that the two are tightly connected.

[0032] The diaphragm 306 drives the movable rod 303 to perform reciprocating motion inside the metering pump body 106 through the movable disk 305, and the internal volume of the metering pump body 106 changes periodically, thereby changing the internal pressure of the metering pump body 106 and allowing the liquid to flow.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A leak-proof device for a metering pump, comprising a main body mechanism, a sealing mechanism, a functional mechanism, and a control mechanism, characterized in that: The sealing mechanism is located on one side of the main body mechanism, the functional mechanism is located inside the main body mechanism, and the control mechanism is located inside the main body mechanism. The main body mechanism comprises a control box (100), a handle (101), a bottom plate (102), a connecting through hole 1 (103), a fixing screw (104), a motor (105), and a metering pump body (106). The control box (100) is fixedly mounted on the top of the bottom plate (102), the handle (101) is fixedly mounted on one side of the control box (100), the bottom plate (102) is fixedly mounted on the bottom end of the control box (100), the connecting through hole 1 (103) is provided inside the bottom plate (102), the fixing screw (104) is fixedly mounted on one side of the metering pump body (106), the motor (105) is fixedly mounted on the top of the control box (100), and the metering pump body (106) is fixedly mounted on one side of the control box (100); The sealing mechanism comprises a metering liquid outlet pipeline (200), a metering liquid inlet pipeline (201), a limiting material guide block (202), a connector (203), a connecting hose (204), a second connecting through hole (205), a sealing plug (206), a first sealing ring (207), and a second sealing ring (208); the metering liquid outlet pipeline (200) is fixedly mounted on one side of a metering pump body (106), and the metering liquid inlet pipeline (201) is fixedly mounted on one side of a metering pump body (106).

2. A leak-proof device for a metering pump according to claim 1, characterized in that: The functional mechanism includes an internal partition (300), a first flow hole (301), a second flow hole (302), a movable rod (303), a spring (304), a movable disk (305), and a diaphragm (306); the internal partition (300) is fixedly installed inside the metering pump body (106); and the first flow hole (301) is opened inside the internal partition (300).

3. A leak-proof device for a metering pump according to claim 1, characterized in that: The control mechanism comprises a connecting pipe (400), a first limit block (401), a second limit block (402), a first ball valve (403), a second ball valve (404), a first ball valve cushion block (405), and a second ball valve cushion block (406); the connecting pipe (400) is fixedly installed inside the metering pump body (106); and the first limit block (401) is fixedly installed inside the connecting pipe (400).

4. A leak-proof device for a metering pump according to claim 1, characterized in that: The limiting guide block (202) is fixedly mounted on one side of the inner wall of the metering liquid outlet pipe (200) and the metering liquid inlet pipe (201); the connecting head (203) is fixedly mounted on one side of the metering liquid outlet pipe (200) and the metering liquid inlet pipe (201); the connecting hose (204) is fixedly mounted inside the metering liquid outlet pipe (200) and the metering liquid inlet pipe (201); the second connecting through hole (205) is provided inside the connecting head (203); the sealing plug (206) is fixedly mounted on one side of the metering pump body (106); the first sealing ring (207) is fixedly mounted on one side of the sealing plug (206); and the second sealing ring (208) is fixedly mounted on one side of the sealing plug (206).

5. A leak-proof device for a metering pump according to claim 2, characterized in that: The second flow through hole (302) is opened inside the connecting pipe (400), the movable rod (303) is fixedly mounted on one side of the movable disk (305), the spring (304) is fixedly mounted on one side of the movable rod (303), the movable disk (305) is fixedly mounted inside the control box (100), and the diaphragm (306) is fixedly mounted on one side of the movable rod (303).

6. A leak-proof device for a metering pump according to claim 3, characterized in that: The second limit block (402) is fixedly installed inside the connecting pipe (400), the first ball valve (403) is fixedly installed on the top of the first ball valve pad (405), the second ball valve (404) is fixedly installed on the top of the second ball valve pad (406), the first ball valve pad (405) is fixedly installed inside the connecting pipe (400), and the second ball valve pad (406) is fixedly installed inside the connecting pipe (400).

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