CN213899251U

CN213899251U - Magnetic control start-stop switch for pressure pump

Info

Publication number: CN213899251U
Application number: CN202022347250.6U
Authority: CN
Inventors: 阮洋法
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-08-06
Anticipated expiration: 2030-10-20

Abstract

The utility model provides a magnetic control opens and stops switch for force pump belongs to mechanical technical field. This magnetic control opens and stops switch includes magnetic induction proximity switch and control valve, the control valve includes the valve body, piston and ejector pin, valve body one side is equipped with the end of intaking, the valve body opposite side is equipped with out the water end, the valve pocket in the valve body, it is located the oblique top of the end of intaking to go out the water end, the valve pocket top is connected with the magnetic induction seat, the magnetic induction proximity switch links firmly on the magnetic induction seat and is connected with the pressure pump, be fixed with the magnet piece on the piston, the piston sets up on valve pocket upper portion, be equipped with elastic component one between piston and the magnetic induction seat bottom surface, the ejector pin sets up in the valve pocket lower part, the bottom of valve body is worn out to the bottom of ejector pin, be equipped with elastic component two between the bottom of ejector pin and valve body, the elasticity of elastic component two is greater than the elasticity of elastic component one. The switch can control the pressure pump to start along with the opening of the spray gun and stop along with the closing of the spray gun, so that the pressure pump can be remotely operated and can be stopped along with use, and the damage to machine parts is effectively prevented.

Description

Magnetic control start-stop switch for pressure pump

Technical Field

The utility model belongs to the technical field of machinery, in particular to a magnetic control opens and stops switch for force pump.

Background

Most of the existing agricultural sprayers, cleaning machines and other machines adopt a pressure pump motor to drive a pressure pump for driving, and because a switch of the pressure pump is often placed above the machine, when a spray gun needs to be started or stopped spraying, the pressure pump cannot be directly started or closed, and the pressure pump switch needs to be manually operated, so that the operation is complicated, the pressure pump cannot be remotely operated, and the labor and the time are wasted; after the spray gun is closed, the pressure pump cannot stop working, so that energy is wasted, pressure is increased, and machine parts are damaged.

Disclosure of Invention

In view of this, an object of the present invention is to provide a magnetic control start/stop switch for a pressure pump, which solves the technical problem of how to automatically stop a water inlet end when a water outlet end is closed or automatically open the water inlet end when the water outlet end is opened.

The purpose of the utility model can be realized by the following technical proposal: a magnetic control start-stop switch for a pressure pump is characterized by comprising a magnetic induction proximity switch and a control valve, wherein the control valve comprises a valve body, a piston and an ejector rod, a water inlet end is arranged on one side of the valve body, a water outlet end is arranged on the other side of the valve body, a valve cavity communicated with the water inlet end and the water outlet end is arranged in the valve body, the water outlet end is positioned above the water inlet end, a magnetic induction seat for sealing the valve cavity is detachably connected above the valve cavity, the magnetic induction proximity switch is fixedly connected on the magnetic induction seat and is connected with the pressure pump through a signal line, a magnet block is fixed on the piston, the piston is arranged on the upper portion of the valve cavity, a first elastic part with the trend of pushing the piston away from the magnetic induction seat is arranged between the bottom surfaces of the piston and the magnetic induction seat, the ejector rod is arranged on the lower portion, and a second elastic part which is provided with a lower ejector rod and pushes the lower ejector rod to the piston is arranged between the ejector rod and the bottom of the valve body, and the elasticity of the second elastic part is greater than that of the first elastic part.

The magnetic control start-stop switch for the pressure pump is generally applied to devices such as the pressure pump, a cleaning machine and the like, the water outlet end of the magnetic control start-stop switch is connected with a check valve, the magnetic control start-stop switch is arranged behind the check valve, and the water outlet end of the magnetic control start-stop switch is connected with a high-pressure pipe and a spray gun. The principle is as follows: 1. in the initial state: the elasticity of the elastic piece II is larger than that of the elastic piece I, the ejector rod pushes the piston to move upwards to be close to the magnetic induction switch, the magnet block is close to the magnetic induction switch, and the magnetic induction switch is in a switch-on state; 2. and (3) normal working state: after the power supply is switched on, the machine is started, the spray gun connected to the water outlet end is opened, high-pressure water flow enters the valve body, the water flow pressure pushes the ejector rod to move downwards, the bottom end of the ejector rod penetrates out of the valve body, the water flow pushes the piston to overcome the elastic force of the elastic piece I to tightly press the piston at the bottom of the magnetic induction seat, the magnet block is continuously close to the magnetic induction switch, the magnetic induction switch keeps a switching-on state, and meanwhile, the water channel is kept smooth; 3. and (3) closing the gun and maintaining the pressure: when the spray gun is closed, because the water inlet end of the control valve is connected with the check valve, the high pressure of the water pressure in the valve body still exists, the ejector rod is still pushed outwards by the water pressure, the pressures of all parts in the valve body are kept equal at the moment, the water flow pushing the piston stops, the thrust force disappears, the ejector rod moves downwards under the action of the first elastic piece, the magnet block is far away from the magnetic induction switch, and the magnetic induction switch is switched off to close the high-pressure pump; 4. pressure relief state: when the pressure pump stops, the spray gun is opened again, the pressure of the valve body is eliminated, the second elastic piece pushes the ejector rod to move upwards, the piston moves upwards again, the magnet block is close to the magnetic induction switch, the magnetic induction switch is switched on again to start the high-pressure pump, and water flow in the valve body returns to flow normally and enters the working state again.

In foretell a magnetic control start-stop switch for force pump, the valve body upper end is equipped with the internal thread, the tip is equipped with the external screw thread under the magnetic induction seat, the tip spiro union is in under the magnetic induction seat the valve body upper end, set up holding tank one that holds elastic component one under the magnetic induction seat on the terminal surface. The mode of adoption spiro union, convenient maintenance and installation set up holding tank one, have certain spacing and guide effect to elastic component one to make reciprocating of piston more reliable and stable.

In the magnetic control start-stop switch for the pressure pump, an overflow cavity is arranged at the joint of the valve cavity and the bottom of the magnetic induction seat, and the overflow cavity is communicated with the water outlet end through an overflow channel. Through setting up overflow chamber and overflow way for the piston is when shifting up, and the water pressure on valve chamber upper portion can in time reduce, thereby guarantees that the piston can shift up smoothly so that trigger the magnetic induction switch.

In foretell a magnetic control opens and stops switch for force pump, one side that the piston faced elastic component one is equipped with holding tank two, the magnet piece is installed in holding tank two, the lower extreme of elastic component one supports and leans on the magnet piece.

In the magnetic control start-stop switch for the pressure pump, the bottom of the valve cavity is provided with a sealing washer, the lower part of the ejector rod is inserted into the sealing washer, the lower end part of the second elastic part abuts against the sealing washer, and the upper end of the second elastic part abuts against the upper end part of the ejector rod.

In the magnetic control start-stop switch for the pressure pump, an O-shaped ring is arranged between the magnetic induction seat and the upper part of the valve body.

In the above magnetic control start-stop switch for the pressure pump, the inner diameter of the first accommodating groove in the bottom surface of the magnetic induction seat is smaller than the inner diameter of the upper port of the valve cavity, and the bottom surface of the magnetic induction seat is recessed relative to the valve cavity to form a first limiting step. When the piston is pushed to the magnetic induction switch by high-pressure water flow or the ejector rod, the piston can be positioned through the limiting step I, and the situation that the ejector rod completely slides into the valve cavity due to the fact that the piston is pushed upwards excessively by the elastic piece II due to overlarge elasticity is avoided.

In the magnetic control start-stop switch for the pressure pump, the lower part of the valve cavity is provided with a second limiting step, the top end of the ejector rod is provided with a baffle edge, and the outer diameter of the baffle edge is larger than the inner diameter of the second limiting step. When the ejector rod is pushed to the outside of the valve body by high-pressure water flow, the two pairs of the ejector rods of the limiting steps have a limiting effect to prevent the ejector rods from being pushed out.

In the magnetic control start-stop switch for the pressure pump, the first elastic piece and the second elastic piece are both springs.

Compared with the prior art, the magnetic control start-stop switch for the pressure pump has the advantages that: the pressure pump switch does not need to be operated manually, and the pressure pump can be operated remotely; after the spray gun is closed, the pressure pump stops working, so that energy is saved, pressure is not increased any more, and machine parts are prevented from being damaged; the connection between the pressure pump and the spray gun is realized, and the spray gun can be used at any time when the spray gun is stopped.

Drawings

Fig. 1 is a schematic structural diagram of the magnetic control start-stop switch for the pressure pump of the present invention.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a sectional view of the working state of the magnetic control start/stop switch for the pressure pump of the present invention.

Fig. 4 is a sectional view of the shutdown state of the magnetic control start-stop switch for the pressure pump of the present invention.

In the figure, 1, a magnetic induction proximity switch; 2. a control valve; 3. a valve body; 3a, a water inlet end; 3b, a water outlet end; 3c, a valve cavity; 4. a piston; 5. a top rod; 5a, blocking edges; 6. a magnetic induction seat; 7. a signal line; 8. a magnet block; 9. a first elastic part; 10. a second elastic piece; 11. an O-shaped ring; 12. a first accommodating groove; 13. a first limiting step; 14. a second accommodating groove; 15. an overflow chamber; 16. an overflow channel; 17. a sealing gasket; 18. and a second limiting step.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The magnetic control start-stop switch for the pressure pump is generally applied to devices such as the pressure pump, a cleaning machine and the like, wherein the water inlet end 3a of the magnetic control start-stop switch is connected with the back of a check valve, and the water outlet end 3b of the magnetic control start-stop switch is connected with a high-pressure pipe and a spray gun. As shown in fig. 1-4, for example, the magnetic control start-stop switch comprises a magnetic induction proximity switch 1 and a control valve 2, the control valve 2 comprises a valve body 3, a piston 4 and a push rod 5, one side of the valve body 3 is provided with a water inlet end 3a, the other side of the valve body 3 is provided with a water outlet end 3b, the valve body 3 is internally provided with a valve cavity 3c communicating the water inlet end 3a with the water outlet end 3b, the water outlet end 3b is positioned obliquely above the water inlet end 3a, the upper part of the valve cavity 3c is detachably connected with a magnetic induction seat 6 sealing the valve cavity 3c, the magnetic induction proximity switch 1 is fixedly connected on the magnetic induction seat 6 and is connected with the pressure pump through a signal line 7, the piston 4 is provided with a magnet block 8, the piston 4 is arranged on the upper part of the valve cavity 3c, an elastic member 9 having a tendency of pushing the piston 4 away from the magnetic induction seat 6 is arranged between the bottom surfaces of the piston 4 and the magnetic induction seat 6, the push rod 5 is arranged on the lower part of the valve cavity 3c and is opposite to the piston 4, the bottom end of the ejector rod 5 penetrates out of the bottom end of the valve body 3, and a second elastic part 10 which pushes the ejector rod 5 to the piston 4 is arranged between the ejector rod 5 and the bottom of the valve body 3. In this embodiment, the first elastic member 9 and the second elastic member 10 both use springs, and the elastic force of the second elastic member 10 is greater than the elastic force of the first elastic member 9.

Specifically speaking, the upper end of the valve body 3 is provided with an internal thread, the lower end of the magnetic induction seat 6 is provided with an external thread, the lower end of the magnetic induction seat 6 is screwed on the upper end of the valve body 3, and an O-shaped ring 11 is arranged between the lower end of the magnetic induction seat 6 and the upper end of the valve body 3.

The lower end face of the magnetic induction seat 6 is provided with a first accommodating groove 12 for accommodating the first elastic part 9, the inner diameter of the first accommodating groove 12 on the bottom face of the magnetic induction seat 6 is smaller than that of the upper port of the valve cavity 3c, and the bottom face of the magnetic induction seat 6 is recessed relative to the valve cavity 3c to form a first limiting step 13. One side of the piston 4 facing the first elastic piece 9 is provided with a second accommodating groove 14, and the magnet block 8 is installed in the second accommodating groove 14 through glue. The upper end of the first elastic piece 9 abuts against the bottom of the first accommodating groove 12, and the lower end of the first elastic piece 9 abuts against the magnet block 8. An overflow cavity 15 is arranged at the joint of the valve cavity 3c and the bottom of the magnetic induction seat 6, and the overflow cavity 15 is communicated with the water outlet end 3b through an overflow channel 16. When the piston 4 moves upwards, water on the upper part of the valve cavity 3c is beaten to the water outlet end 3b, so that the water pressure in the first accommodating groove 12 is reduced, and the piston 4 can smoothly move upwards to trigger the magnetic induction switch.

The bottom of the valve cavity 3c is provided with a sealing washer 17, the lower part of the push rod 5 is inserted in the sealing washer 17, the lower end part of the second elastic part 10 abuts against the sealing washer 17, and the upper end part of the second elastic part 10 abuts against the upper end part of the push rod 5. The lower part of the valve cavity 3c is provided with a second limiting step 18, the top end of the ejector rod 5 is provided with a blocking edge 5a, and the outer diameter of the blocking edge 5a is larger than the inner diameter of the second limiting step 18.

The principle of the magnetic control start-stop switch for the pressure pump is as follows, and the magnetic control start-stop switch comprises 4 states:

1. in the initial state: the ejector rod 5 pushes the piston 4 upwards to move close to the magnetic induction switch, so that the magnet block 8 is close to the magnetic induction switch, and the magnetic induction switch is switched on, and the specific state is shown in fig. 1.

2. And (3) normal working state: the power supply is connected with a machine to start, a spray gun connected with the water outlet end 3b is opened, high-pressure water flows into the valve body 3, the high-pressure water flow pushes the ejector rod 5 to move downwards, the bottom end of the ejector rod 5 penetrates out of the valve body 3, meanwhile, the water flow pushes the piston 4 to overcome the elastic force of the elastic piece I9 to tightly press the piston 4 at the bottom of the magnetic induction seat 6, and the magnetic induction switch is kept in a connected state; the water channel is kept open, see figure 3 for details.

3. And (3) closing the gun and maintaining the pressure: when the spray gun is closed, the high pressure of the water pressure in the valve body 3 is kept, the ejector rod 5 is still outwards pushed by the water pressure, the pressures at all the positions in the valve body 3 are kept balanced at the moment, the water flow of the piston 4 is pushed to disappear, and the piston moves downwards under the action of the elastic piece I9, so that the magnet block 8 is far away from the magnetic induction switch, the magnetic induction switch is switched off to close the high-pressure pump, and the specific state is shown in figure 4.

4. Pressure relief state: when the pressure pump stops, the spray gun is opened again, the pressure of the valve body 3 is eliminated, the second elastic piece 10 pushes the ejector rod 5 to move upwards, the piston 4 moves upwards again, the magnet block 8 is close to the magnetic induction switch, the magnetic induction switch is switched on again to start the high-pressure pump, and the water flow in the valve body 3 returns to normal flow and enters the working state again.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a magnetic control opens and stops switch for force pump, its characterized in that, includes magnetic induction proximity switch (1) and control valve (2), control valve (2) include valve body (3), piston (4) and ejector pin (5), valve body (3) one side is equipped with into water end (3a), valve body (3) opposite side is equipped with out water end (3b), valve pocket (3c) that have intercommunication into water end (3a) and play water end (3b) in valve body (3), it is located the oblique top of intaking end (3a) to go out water end (3b), valve pocket (3c) top detachable is connected with the magnetic induction seat (6) sealed with valve pocket (3c), magnetic induction proximity switch (1) links firmly on magnetic induction seat (6) and is connected through signal line (7) with the force pump, be fixed with magnet piece (8) on piston (4), piston (4) set up on valve pocket (3c) upper portion, be equipped with between piston (4) and magnetic induction seat (6) bottom surface and have the elastic component (9) that push away piston (4) from the trend of magnetic induction seat (6), ejector pin (5) set up in valve pocket (3c) lower part and with piston (4) are relative, the bottom of valve body (3) is worn out to the bottom of ejector pin (5), ejector pin (5) with be equipped with between the bottom of valve body (3) and have the elastic component two (10) that drop ejector pin (5) and push to piston (4), the elasticity of elastic component two (10) is greater than the elasticity of elastic component one (9).

2. The magnetic control start-stop switch for the pressure pump according to claim 1, characterized in that the upper end of the valve body (3) is provided with an internal thread, the lower end of the magnetic induction seat (6) is provided with an external thread, the lower end of the magnetic induction seat (6) is screwed to the upper end of the valve body (3), and a first accommodating groove (12) for accommodating the first elastic element (9) is formed in the lower end face of the magnetic induction seat (6).

3. The magnetically controlled start-stop switch for a pressure pump according to claim 1 or 2, wherein an overflow cavity (15) is provided at the junction of the valve cavity (3c) and the bottom of the magnetic induction seat (6), and the overflow cavity (15) is communicated with the water outlet end (3b) through an overflow channel (16).

4. The magnetically controlled start-stop switch for a pressure pump according to claim 1 or 2, characterized in that the piston (4) is provided with a second receiving groove (14) on the side facing the first elastic element (9), the magnet block (8) is fixed in the second receiving groove (14) by glue, and the lower end of the first elastic element (9) abuts against the magnet block (8).

5. The magnetically controlled start-stop switch for the pressure pump according to claim 1 or 2, wherein a sealing gasket (17) is arranged at the bottom of the valve cavity (3c), the lower part of the push rod (5) is inserted into the sealing gasket (17), the lower end of the second elastic member (10) abuts against the sealing gasket (17), and the upper end of the second elastic member (10) abuts against the upper end of the push rod (5).

6. The magnetically controlled start-stop switch for a pressure pump according to claim 1 or 2, characterized in that an O-ring (11) is provided between the magnetic induction seat (6) and the upper part of the valve body (3).

7. The magnetically controlled start-stop switch for a pressure pump according to claim 2, wherein the inner diameter of the first receiving groove (12) on the bottom surface of the magnetic induction seat (6) is smaller than the inner diameter of the upper port of the valve cavity (3c), and the bottom surface of the magnetic induction seat (6) is recessed relative to the valve cavity (3c) to form a first limit step (13).

8. The magnetically controlled start-stop switch for the pressure pump according to claim 1 or 2, wherein a second limit step (18) is arranged at the lower part of the valve cavity (3c), a blocking edge (5a) is arranged at the top end of the push rod (5), and the outer diameter of the blocking edge (5a) is larger than the inner diameter of the second limit step (18).

9. The magnetically controlled start-stop switch for a pressure pump according to claim 1 or 2, characterized in that the first elastic member (9) and the second elastic member (10) are both springs.