Electronic pressure controller for pump

Abstract

The utility model provides an electronic pressure controller for a pump, and belongs to the technical field of machinery. The electronic pressure controller for the pump solves the problem that an existing electronic pressure controller for the pump is not reliable in work due to leakage. The electronic pressure controller for the pump comprises a shell, a water inlet end is arranged at the lower end of the shell, a water outlet end is arranged on one side of the shell, a check valve is arranged on the inner side of the water inlet end, first magnetic steel is fixedly connected to the upper end of the check valve, a mounting cavity is formed in the other side of the shell, a circuit board is fixedly connected into the mounting cavity, and a reed switch is connected to the circuit board. An elastic membrane is fixedly connected to the upper side of the shell and divides a cavity of the shell into a pressure cavity and a buffering cavity, an annular protruding shoulder is arranged on the outer side wall of the check valve, an annular groove is formed in the lower end face of the annular protruding shoulder, a sealing ring is embedded in the annular groove, and the sealing ring can abut against the inner end face of the water inlet end. The electronic pressure controller for the pump has the advantages of being reliable and stable in work and not prone to leakage.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a pressure controller, in particular to an electronic pressure controller for a pump. Background Art

[0002] In order to achieve automatic control, the electric water pumps currently used have pressure controllers installed in the pipelines, but most of the traditional pressure controllers are not equipped with water shortage protection structures. When the water source is drained, no water will flow into the pipeline, and the pressure in the pipeline is lower than the maximum pressure value of the water pump. The pressure controller has been controlling the water pump to keep it working. At this time, the electric water pump is in an idle running state, which wastes electricity to a certain extent. In addition, the water pump in the idle running state will generate a lot of heat, causing the water pump parts to soften and deform, aggravating the wear between the parts, and greatly shortening the service life of the water pump. In order to avoid the occurrence of idling of the water pump, workers are required to be on duty for a long time, which increases labor costs.

[0003] For this reason, people have added a water shortage protection device in the controller. The controller equipped with the water shortage protection device is composed of a pressure tank, a pressure switch, a water shortage protection device, a check valve, a four-way valve, etc. Its complex structure leads to waste of materials, and it is inconvenient to install. The installation is time-consuming and labor-intensive. The poor integration effect leads to poor sealing, which is prone to leakage and makes the operation unreliable. Summary of the invention

[0004] The utility model aims to solve the above problems in the prior art and proposes an electronic pressure controller for a pump which has reliable and stable operation and is not prone to leakage.

[0005] The purpose of the utility model can be achieved through the following technical solutions: an electronic pressure controller for a pump, comprising a shell with a cavity, the lower end of the shell is a vertically arranged water inlet end, one side of the shell has a horizontally arranged water outlet end, a check valve that can be lifted up and down is coaxially arranged inside the water inlet end, and a magnetic steel is fixedly connected to the upper end of the check valve, characterized in that the other side of the shell has a mounting cavity for fixing a circuit board, a circuit board is fixedly connected in the mounting cavity, a reed switch is connected to the circuit board and the reed switch can sense the magnetic steel, an elastic diaphragm is fixedly connected to the upper side of the shell and the elastic diaphragm divides the cavity of the shell into a pressure chamber and a buffer chamber, the water inlet end and the water outlet end are both connected to the pressure chamber, the outer side wall of the check valve is provided with an annular boss, the lower end face of the annular boss is provided with an annular groove and a sealing ring is embedded in the annular groove, and the sealing ring can be pressed against the inner end face of the water inlet end.

[0006] The electronic pressure controller for this pump is installed on the pipeline. When working, water flows in through the water inlet end to push the check valve open and flow into the pressure chamber, and the water pressure pushes the elastic diaphragm up. When the user stops using water, the check valve closes, and the check valve falls back. The sealing ring presses against the inner end face of the water inlet end and forms a seal. The reed switch senses the position of the magnetic steel 1 and sends a signal to the circuit board, and the circuit board controls the water pump to stop working. When the user turns on the faucet, the pressure in the pressure chamber becomes low, and the compressed elastic diaphragm is reset. The reed switch senses the magnetic steel 1, thereby sensing the pressure in the chamber, which has the advantage of accurate sensing. When the check valve is closed, the sealing ring presses against the inner end face of the water inlet end and forms a seal, which has the advantages of reliable and stable operation and not easy to leak.

[0007] In the above-mentioned electronic pressure controller for pumps, a spring is arranged in the buffer chamber, one end of the spring is in the middle of the elastic diaphragm, a fixing seat is fixedly connected to the upper end of the housing, a positioning groove is arranged at the inner end of the fixing seat, and one end of the spring is embedded in the positioning groove. The other end of the spring is embedded in the positioning groove, which has a good positioning effect on the spring and prevents the spring from falling off.

[0008] In the above-mentioned electronic pressure controller for a pump, one side of the middle part of the elastic diaphragm is fixedly connected with an upper thrust seat, the upper end of the upper thrust seat has a protruding positioning convex body and the other end of the spring is sleeved on the positioning convex body. The other end of the spring is sleeved on the positioning convex body, which has the advantage of good positioning effect.

[0009] In the above-mentioned electronic pressure controller for a pump, a lower thrust seat is provided on the other side of the middle of the elastic diaphragm, the middle of the elastic diaphragm is squeezed between the upper thrust seat and the lower thrust seat, and the upper thrust seat and the lower thrust seat are fixedly connected by screws. The upper thrust seat and the lower thrust seat are fixedly connected by screws and clamp the elastic diaphragm, which has the advantage of good connection effect.

[0010] In the above-mentioned electronic pressure controller for a pump, the lower end of the lower thrust seat has a cylindrical and protruding guide portion, a second magnetic steel is fixedly connected to the guide portion, and the reed switch can sense the second magnetic steel. The above-mentioned arrangement has the advantages of good positioning effect and convenient manufacturing.

[0011] In the above-mentioned electronic pressure controller for pumps, the upper end of the check valve has a protruding connection column, and the magnetic steel is fixedly connected in the connection column. With the above-mentioned arrangement, the sealing part of the check valve has a better sealing effect, and the reliability of use is improved.

[0012] In the above-mentioned electronic pressure controller for a pump, a weighted pin is fixedly connected in the connecting column, and the weighted pin abuts against the magnetic steel. By providing the weighted pin, the sealing effect of the check valve is improved, and the reliability of use is improved.

[0013] Compared with the prior art, the electronic pressure controller for pumps has the following advantages:

[0014] 1. The reed switch senses the magnet steel 1, thereby sensing the pressure in the cavity, which has the advantage of accurate sensing;

[0015] 2. When the check valve is closed, the sealing ring presses against the inner end surface of the water inlet end and forms a seal, which has the advantages of reliable and stable operation and is not prone to leakage;

[0016] 3. The other end of the spring is embedded in the positioning groove, which has a good positioning effect on the spring and prevents the spring from falling off;

[0017] 4. The upper thrust seat and the lower thrust seat are fixedly connected by screws and clamp the elastic diaphragm, which has the advantage of good connection effect.

[0018] 5. The check valve is equipped with a weighted pin to improve the sealing effect of the check valve and the reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a cross-sectional schematic diagram of an electronic pressure controller for a pump.

[0020] Figure 2 yes Figure 1 A is a partial enlarged schematic diagram.

[0021] In the figure, 1, shell; 1a, installation cavity; 1b, water inlet end; 1c, water outlet end; 1d, pressure cavity; 1e, buffer cavity; 2, check valve; 2a, annular boss; 2b, connecting column; 3, magnet one; 4, circuit board; 5, elastic diaphragm; 6, sealing ring; 7, spring; 8, fixing seat; 8a, positioning groove; 9, upper thrust seat; 9a, positioning convex body; 10, lower thrust seat; 10a, guide part; 11, magnet two; 12, weighting pin. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figure 1 and 2As shown, an electronic pressure controller for a pump comprises a shell 1 having a cavity, the lower end of the shell 1 is a vertically arranged water inlet end 1b, one side of the shell 1 has a horizontally arranged water outlet end 1c, a check valve 2 which can be lifted up and down is coaxially arranged inside the water inlet end 1b, a magnetic steel 3 is fixedly connected to the upper end of the check valve 2, and the characteristic is that the other side of the shell 1 has a mounting cavity 1a for fixing a circuit board 4, a circuit board 4 is fixedly connected in the mounting cavity 1a, a reed switch is connected on the circuit board 4 and the reed switch can sense the magnetic steel 3, an elastic diaphragm 5 is fixedly connected to the upper side of the shell 1 and the elastic diaphragm 5 divides the cavity of the shell 1 into a pressure chamber 1d and a buffer chamber 1e, the water inlet end 1b and the water outlet end 1c are both connected to the pressure chamber 1d, an outer side wall of the check valve 2 is provided with an annular boss 2a, the lower end surface of the annular boss 2a is provided with an annular groove and a sealing ring 6 is embedded in the annular groove, and the sealing ring 6 can be pressed against the inner end surface of the water inlet end 1b.

[0024] A spring 7 is provided in the buffer chamber 1e, one end of the spring 7 is in the middle of the elastic diaphragm 5, a fixing seat 8 is fixedly connected to the upper end of the housing 1, a positioning groove 8a is provided at the inner end of the fixing seat 8, one end of the spring 7 is embedded in the positioning groove 8a, an upper thrust seat 9 is fixedly connected to one side of the middle of the elastic diaphragm 5, the upper end of the upper thrust seat 9 has a protruding positioning convex body 9a and the other end of the spring 7 is sleeved on the positioning convex body 9a, which has a good positioning effect on the spring 7 and prevents the spring 7 from falling off. A lower thrust seat 10 is provided on the other side of the middle of the elastic diaphragm 5, the middle of the elastic diaphragm 5 is squeezed between the upper thrust seat 9 and the lower thrust seat 10, and the upper thrust seat 9 and the lower thrust seat 10 are fixedly connected by screws, which has the advantage of good connection effect.

[0025] The lower end of the lower thrust seat 10 has a cylindrical and protruding guide portion 10a, in which a second magnetic steel 11 is fixedly connected. The reed switch can sense the second magnetic steel 11, which has the advantages of good positioning effect and convenient manufacturing.

[0026] The upper end of the check valve 2 has a protruding connection column 2b, and the magnetic steel 1 3 is fixedly connected in the connection column 2b, so that the sealing part of the check valve 2 has a better sealing effect and improves the reliability of use. A weighted pin 12 is fixedly connected in the connection column 2b, and the weighted pin 12 abuts against the magnetic steel 1 3, which improves the sealing effect of the check valve 2 and improves the reliability of use.

[0027] The electronic pressure controller for this pump is installed on the pipeline. When working, water flows in through the water inlet end 1b to push open the check valve 2 and flow into the pressure chamber 1d, and the water pressure pushes the elastic diaphragm 5 up. When the user stops using water, the check valve 2 is closed, and the check valve 2 falls back at this time. The sealing ring 6 presses against the inner end surface of the water inlet end 1b and forms a seal. The reed switch senses the position of the magnetic steel 13 and sends a signal to the circuit board 4, and the circuit board 4 controls the water pump to stop working. When the user turns on the faucet, the pressure in the pressure chamber 1d becomes low, and the compressed elastic diaphragm 5 is reset. The reed switch senses the magnetic steel 13, thereby sensing the pressure in the chamber, which has the advantage of accurate sensing. When the check valve 2 is closed, the sealing ring 6 presses against the inner end surface of the water inlet end 1b and forms a seal, which has the advantages of reliable and stable operation and not easy to leak.

[0028] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0029] Although this article uses more terms such as housing 1, installation cavity 1a, water inlet end 1b, water outlet end 1c, pressure cavity 1d, buffer cavity 1e, check valve 2, annular boss 2a, connecting column 2b, magnetic steel 1 3, circuit board 4, elastic diaphragm 5, sealing ring 6, spring 7, fixing seat 8, positioning groove 8a, upper thrust seat 9, positioning convex body 9a, lower thrust seat 10, guide part 10a, magnetic steel 2 11, weighting pin 12, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An electronic pressure controller for a pump, comprising a housing (1) having a cavity, wherein the lower end of the housing (1) is a vertically arranged water inlet end (1b), and one side of the housing (1) has a horizontally arranged water outlet end (1c), and a check valve (2) capable of being raised and lowered is coaxially arranged inside the water inlet end (1b), and a magnetic steel (3) is fixedly connected to the upper end of the check valve (2), characterized in that: The other side of the shell (1) has an installation cavity (1a) for fixing the circuit board (4), the installation cavity (1a) is fixedly connected with the circuit board (4), the circuit board (4) is connected with a reed switch and the reed switch can sense the magnetic steel 1 (3), the upper side of the shell (1) is fixedly connected with an elastic diaphragm (5) and the elastic diaphragm (5) divides the cavity of the shell (1) into a pressure cavity (1d) and a buffer cavity (1e), the water inlet end (1b) and the water outlet end (1c) are both connected to the pressure cavity (1d), the outer wall of the check valve (2) is provided with an annular boss (2a), the lower end face of the annular boss (2a) is provided with an annular groove and a sealing ring (6) is embedded in the annular groove, and the sealing ring (6) can be pressed against the inner end face of the water inlet end (1b).

2. An electronic pressure controller for a pump according to claim 1, characterized in that: A spring (7) is arranged in the buffer cavity (1e), one end of the spring (7) is in the middle of the elastic diaphragm (5), the upper end of the shell (1) is fixedly connected with a fixing seat (8), the inner end of the fixing seat (8) is provided with a positioning groove (8a), and one end of the spring (7) is embedded in the positioning groove (8a).

3. An electronic pressure controller for a pump according to claim 2, characterized in that: An upper thrust seat (9) is fixedly connected to one side of the middle of the elastic diaphragm (5), the upper end of the upper thrust seat (9) has a protruding positioning convex body (9a) and the other end of the spring (7) is sleeved on the positioning convex body (9a).

4. An electronic pressure controller for a pump according to claim 3, characterized in that: A lower thrust seat (10) is provided on the other side of the middle part of the elastic diaphragm (5), the middle part of the elastic diaphragm (5) is squeezed between the upper thrust seat (9) and the lower thrust seat (10), and the upper thrust seat (9) and the lower thrust seat (10) are fixedly connected by screws.

5. The electronic pressure controller for a pump according to claim 4, characterized in that: The lower end of the lower thrust seat (10) has a columnar and protruding guide portion (10a), and a second magnetic steel (11) is fixedly connected to the guide portion (10a). The reed switch can sense the second magnetic steel (11).

6. An electronic pressure controller for a pump according to claim 1 or 2 or 3 or 4 or 5, characterized in that: The upper end of the check valve (2) has a protruding connecting column (2b), and the magnetic steel 1 (3) is fixedly connected in the connecting column (2b).

7. An electronic pressure controller for a pump according to claim 6, characterized in that: A weighting pin (12) is fixedly connected inside the connecting column (2b), and the weighting pin (12) is in contact with the magnetic steel 1 (3).

Images