Integrated pressure switch for water pump

Abstract

The utility model discloses an integrated pressure switch for a water pump in the technical field of water pump control devices, which comprises a lower shell, the bottom of the lower shell is connected with a water inlet pipe, the top of the lower shell is provided with an upper shell through a connecting assembly, the lower shell is internally provided with a lifting piston, and the two ends of the top of the lifting piston are connected with vertical rods. The tops of the two sets of vertical rods extend into the upper shell, through holes matched with the vertical rods are formed in the bottom of the upper shell, the outer sides of the two sets of vertical rods are sleeved with reset springs, the reset springs are located between the bottom of the upper shell and the top of the lifting piston, and electric push rods are installed on the two sides of the upper shell. Start-stop assemblies are arranged at the output ends of the two sets of electric push rods. The upper shell, the lower shell, the through hole, the vertical rod and the connecting assembly are arranged in a matched mode, and the upper shell is moved away from the top of the lower shell through the connecting assembly, so that quick replacement of the reset spring is achieved, and the situation that the reset spring loses elasticity after being used for a long time is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water pump control device especially, it is a kind of integrated pressure switch for water pump. BACKGROUND

[0002] The pressure switch of water pump start is a kind of equipment for controlling water pump operation, plays a key role when water pump starts and stops, in domestic water supply, often adopt and install pressure switch on self-priming pump to make it realize automation, when faucet opens, pressure switch actuation water pump power on, when faucet is closed, pressure switch water pressure increases and makes pressure switch actuation water pump to close again.Pressure switch control on-off is automatically realized by the pressure of water.

[0003] Patent announcement No. CN221960895U discloses a kind of pressure switch for controlling water pump work, it is related to pressure switch technical field, including shell main body and water inlet, shell main, installation base, installation block, threaded sleeve, auxiliary rod, the upper portion of water inlet is provided with buffer bag, the center of buffer bag is provided with movable block, the upper portion of movable block is connected with first spring, the upper portion of first spring is connected with linkage block, the upper portion of linkage block is connected with second spring, the upper portion of second spring is connected with auxiliary block, the upper portion of auxiliary block is connected with switch assembly.The utility model is provided with first spring and second spring in the upper portion of buffer bag, when buffer bag is impacted by water flow, first spring and second spring are extruded in sequence, so that moving contact piece contacts static contact piece to complete the automatic pressure switch of water pump, and first spring and second spring share the pressure of buffer bag, so as to prolong the service life of spring, avoid the spring size error caused by long-term large load pressure, but the above-mentioned device cannot replace spring, because the stretchable characteristics of spring itself makes spring lose elasticity after long-term use, and if spring is not replaced in time, the action of pressure switch will be inaccurate. UTILITY MODEL CONTENTS

[0004] In order to improve the above-mentioned device cannot replace spring, because the stretchable characteristics of spring itself makes spring lose elasticity after long-term use, and if spring is not replaced in time, the action of pressure switch will be inaccurate, the utility model provides a kind of integrated pressure switch for water pump.

[0005] The utility model provides a kind of integrated pressure switch for water pump, adopt following technical scheme:

[0006] The utility model provides an integrated pressure switch for water pump, including lower casing, the bottom of lower casing is connected with water inlet pipe, the top of lower casing is installed with upper casing through connecting assembly, the inside of lower casing is installed with lift piston, both ends of lift piston top are connected with vertical rod, the top of two groups vertical rod all stretches into the inside of upper casing, the bottom of upper casing is equipped with the through -hole of being suitable for vertical rod, the outside of two groups vertical rod all is set with return spring, and return spring is located between the bottom of upper casing and the top of lift piston, both sides of upper casing all are installed with electric push rod, the output of two groups electric push rod all is provided with start -stop subassembly, and start -stop subassembly is located above vertical rod.

[0007] Through the above technical scheme, the pressure switch is connected with the water pump through the water inlet pipe, and then one of the electric push rods is controlled to extend, the electric push rod drives the start-stop subassembly to move above the vertical rod, when the water inlet pipe is filled with water, the water generates pressure on the lift piston, when the pressure of the water on the lift piston is greater than the reset force of the return spring on the lift piston, the lift piston rises in the lower casing, the return spring is continuously compressed at this time, and the lift piston drives the vertical rod to move upward, so as to trigger the start-stop subassembly, the start-stop subassembly transmits a signal to the controller, and the controller controls the water pump to be closed, when the return spring loses elasticity after long-term use, the upper casing is pulled upward by the staff, the upper casing is removed from the top of the lower casing through the connecting assembly, and the top of the lower casing is in an open state, so that the return spring can be quickly replaced.

[0008] Optionally, the outer wall of the water inlet pipe is uniformly provided with external threads.

[0009] Through the above technical scheme, the pressure switch can be installed on the water pump by the external threads on the water inlet pipe.

[0010] Optionally, a sealing groove is formed in the outer side wall of the lift piston, and a sealing ring is embedded in the sealing groove.

[0011] Through the above technical scheme, the sealing performance between the lift piston and the lower casing is effectively improved.

[0012] Optionally, limit blocks are connected to the left and right ends of the inner wall of the lower casing and located below the lift piston.

[0013] Through the above technical scheme, the position of the lift piston is limited by the limit blocks.

[0014] Optionally, the connecting assembly includes two groups of connecting blocks, the two groups of connecting blocks are respectively installed at the two ends of the bottom of the upper casing, and the top of the lower casing is provided with connecting grooves matched with the connecting blocks.

[0015] Through the connection of the connecting block and the connecting groove, the upper shell and the lower shell can be conveniently disassembled.

[0016] Optionally, the top of the two sides of the lower shell is provided with a locking assembly, the locking assembly comprises two groups of protection boxes, the two groups of protection boxes are installed on the top of the two sides of the lower shell respectively, a screw rod is screwed in the protection box, a movable plate is rotatably connected to the side of the screw rod close to the lower shell, a rotating disc is installed on the end of the screw rod away from the movable plate and extends out of the protection box, the top and the bottom of the movable plate are connected with sliding blocks, the top and the bottom of the inner wall of the protection box are provided with sliding grooves matched with the sliding blocks, and the end of the movable plate away from the screw rod is connected with a plug rod.

[0017] Through the above technical scheme, the rotating disc is rotated by the staff, the screw rod is rotated, the movable plate is moved towards the connecting block under the sliding cooperation of the sliding groove and the sliding block, the plug rod is moved when the movable plate is moved, and the plug rod is inserted into the inside of the insertion groove, so that the connecting block can be fixed, and the upper shell and the lower shell are more firmly connected.

[0018] Optionally, the start-stop assembly comprises two groups of support rods, the two groups of support rods are installed on the left and right ends of the inner top wall of the upper shell respectively, a static contact piece is installed at the bottom of the support rod, a static contact point is connected to the bottom of the static contact piece, an L-shaped support plate is installed at the output end of the electric push rod, a dynamic contact plate is slidably installed on the side of the L-shaped support plate close to the center of the upper shell, a dynamic contact point is connected to the top of the dynamic contact plate, a pulley is rotatably connected to the side of the dynamic contact plate away from the center of the upper shell, and a sliding rail matched with the pulley is formed in the inner side of the L-shaped support plate.

[0019] Through the above technical scheme, the dynamic contact plate is slid along the sliding rail through the pulley by applying force to the dynamic contact plate through the top of the vertical rod, and the signal is transmitted to the controller when the dynamic contact point on the dynamic contact plate and the static contact point on the static contact piece are connected, so that the controller controls the water pump to be closed.

[0020] In summary, the utility model has at least one of the following beneficial effects:

[0021] Through the cooperation of the upper shell, the lower shell, the through hole, the vertical rod and the connecting assembly, the upper shell is removed from the top of the lower shell through the connecting assembly, so that the quick replacement of the return spring is realized, and the loss of elasticity of the return spring due to long-term use is effectively prevented.

[0022] Through the setting of the start-stop assembly on the two sides of the upper shell, when one of the start-stop assemblies fails when the pressure switch is used, the other one can be used for emergency, so that the normal use of the pressure switch is ensured, and the use of the pressure switch is ensured to a certain extent. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0026] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point B.

[0027] In the diagram: 1. Upper housing; 2. Electric push rod; 3. Lower housing; 4. Lifting piston; 5. Sealing ring; 6. Limiting block; 7. Water inlet pipe; 8. Return spring; 9. Through hole; 10. Vertical rod; 11. Start / stop assembly; 1101. Support rod; 1102. Stationary contact plate; 1103. Stationary contact point; 1104. L-shaped support plate; 1105. Moving contact point; 1106. Moving contact plate; 1107. Pulley; 1108. Slide rail; 12. Connecting assembly; 1201. Connecting block; 1202. Connecting groove; 13. Locking assembly; 1301. Turntable; 1302. Screw; 1303. Protective box; 1304. Slide groove; 1305. Slider; 1306. Movable plate; 1307. Insert rod; 1308. Slot. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-3 The present invention will be described in further detail below.

[0029] Please refer to the attached diagram in the instruction manual. Figure 1 This utility model provides an embodiment of an integrated pressure switch for a water pump, comprising a lower housing 3, with a water inlet pipe 7 fixedly connected to the bottom of the lower housing 3. The outer wall of the water inlet pipe 7 is uniformly provided with external threads. This facilitates connection to the water pump via the external threads on the water inlet pipe 7, thereby enabling the pressure switch to be installed on the water pump.

[0030] Please refer to the attached diagram in the instruction manual. Figure 1 and Figure 3The top of the lower shell 3 is provided with the upper shell 1 through the connecting assembly 12, the connecting assembly 12 comprises two groups of connecting blocks 1201, the two groups of connecting blocks 1201 are fixedly installed at two ends of the bottom of the upper shell 1, and the top of the lower shell 3 is provided with connecting grooves 1202 matched with the connecting blocks 1201 at two ends. Through the plug-in cooperation of the connecting blocks 1201 and the connecting grooves 1202, the disassembly and assembly work between the upper shell 1 and the lower shell 3 is facilitated.

[0031] Please refer to the drawings in the specification Figure 1 and Figure 3 The top of the lower shell 3 is provided with the upper shell 1 through the connecting assembly 12, the connecting assembly 12 comprises two groups of connecting blocks 1201, the two groups of connecting blocks 1201 are fixedly installed at two ends of the bottom of the upper shell 1, and the top of the lower shell 3 is provided with connecting grooves 1202 matched with the connecting blocks 1201 at two ends. Through the plug-in cooperation of the connecting blocks 1201 and the connecting grooves 1202, the disassembly and assembly work between the upper shell 1 and the lower shell 3 is facilitated.

[0032] Please refer to the drawings in the specification Figure 1 The inside of the lower shell 3 is provided with the lifting piston 4, the outer side wall of the lifting piston 4 is provided with a sealing groove, and the sealing groove is embedded with a sealing ring 5. The sealing performance between the lifting piston 4 and the lower shell 3 is effectively improved. The left and right ends of the inner wall of the lower shell 3 are connected with limit blocks 6, and the limit blocks 6 are located below the lifting piston 4. The position of the lifting piston 4 is limited through the limit blocks 6.

[0033] Please refer to the drawings in the specification Figure 1The top of the lifting piston 4 is vertically connected with two vertical rods 10 at both ends, the top of the two groups of vertical rods 10 extends into the inside of the upper shell 1, the bottom of the upper shell 1 is provided with a through hole 9 matched with the vertical rod 10, the outside of the two groups of vertical rods 10 is sleeved with a reset spring 8, and the reset spring 8 is located between the bottom of the upper shell 1 and the top of the lifting piston 4, the two sides of the upper shell 1 are installed with an electric push rod 2, the output end of the two groups of electric push rods 2 is provided with a start-stop assembly 11, and the start-stop assembly 11 is located above the vertical rod 10.

[0034] Please refer to the drawings in the specification Figure 1 and Figure 2 Figure 2 The start-stop assembly 11 comprises two groups of support rods 1101, and the two groups of support rods 1101 are fixedly installed at the left and right ends of the inner top wall of the upper shell 1, the bottom of the support rod 1101 is fixedly installed with a static contact piece 1102, the bottom of the static contact piece 1102 is fixedly connected with a static contact point 1103, the output end of the electric push rod 2 is fixedly installed with an L-shaped support plate 1104, the side close to the center of the upper shell 1 of the L-shaped support plate 1104 is slidably installed with a dynamic contact plate 1106, the top of the dynamic contact plate 1106 is connected with a dynamic contact point 1105, the side away from the center of the upper shell 1 of the dynamic contact plate 1106 is rotatably connected with a pulley 1107, and the inside of the L-shaped support plate 1104 is provided with a sliding rail 1108 in sliding cooperation with the pulley 1107. The top of the vertical rod 10 exerts force on the dynamic contact plate 1106, so that the dynamic contact plate 1106 slides along the sliding rail 1108 through the pulley 1107, and when the dynamic contact point 1105 on the dynamic contact plate 1106 is connected with the static contact point 1103 on the static contact piece 1102, the signal is transmitted to the controller, and the controller controls the water pump to be closed.

[0035] Working principle: in use, the water inlet pipe 7 is connected with the water pump through the external thread, and then the pressure switch is connected with the water pump, at this time one of the electric push rods 2 is controlled to be extended, the electric push rod 2 drives one of the L-shaped support plates 1104 to move, the L-shaped support plate 1104 drives the dynamic contact plate 1106 to move, until the dynamic contact plate 1106 is located directly above the vertical rod 10, when the water inlet pipe 7 is filled with water, the water exerts pressure on the lifting piston 4, when the pressure of the water on the lifting piston 4 is greater than the reset force of the reset spring 8 on the lifting piston 4, the lifting piston 4 rises in the lower shell 3, at this time the reset spring 8 is continuously compressed, at the same time the lifting piston 4 drives the vertical rod 10 to move upwards, the top of the vertical rod 10 exerts force on the dynamic contact plate 1106, so that the dynamic contact plate 1106 slides along the sliding rail 1108 through the pulley 1107, and when the dynamic contact point 1105 on the dynamic contact plate 1106 is connected with the static contact point 1103 on the static contact piece 1102, the signal is transmitted to the controller, and the controller controls the water pump to be closed.

[0036] When one of the groups of start-stop components 11 fails during use, the other electric push rod 2 can be controlled to extend, the electric push rod 2 drives the other L-shaped support plate 1104 to move, the L-shaped support plate 1104 drives the other movable contact plate 1106 to move, until the other movable contact plate 1106 is located directly above the vertical rod 10, so that the emergency effect is achieved, the normal use of the pressure switch is ensured, and the use guarantee of the pressure switch is increased to a certain extent.

[0037] When the reset spring 8 loses elasticity after long-time use, the staff rotates the rotating disc 1301, the rotating disc 1301 drives the screw rod 1302 to rotate, under the sliding cooperation of the sliding groove 1304 and the sliding block 1305, the screw rod 1302 drives the movable plate 1306 to move outward, when the movable plate 1306 moves, the insertion rod 1307 moves outward, until the insertion rod 1307 is separated from the insertion groove 1308, at this time, the upper shell 1 is pulled upward, the upper shell 1 drives the connecting block 1201 to move upward, until the connecting block 1201 is separated from the connecting groove 1202, the upper shell 1 can be removed from the top of the lower shell 3, at this time, the top of the lower shell 3 is in an open state, so that the reset spring 8 can be quickly replaced.

[0038] The above are preferred embodiments of the utility model, and do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. An integrated pressure switch for a water pump, comprising a lower housing (3), characterized in that: The bottom of the lower housing (3) is connected to a water inlet pipe (7). The top of the lower housing (3) is connected to an upper housing (1) via a connecting assembly (12). A lifting piston (4) is installed inside the lower housing (3). Both ends of the top of the lifting piston (4) are connected to vertical rods (10). The tops of both sets of vertical rods (10) extend into the interior of the upper housing (1). The bottom of the upper housing (1) is provided with through holes (9) that are compatible with the vertical rods (10). The outer sides of both sets of vertical rods (10) are fitted with reset springs (8), and the reset springs (8) are located between the bottom of the upper housing (1) and the top of the lifting piston (4). Electric push rods (2) are installed on both sides of the upper housing (1). The output ends of both sets of electric push rods (2) are provided with start-stop assemblies (11), and the start-stop assemblies (11) are located above the vertical rods (10).

2. The integrated pressure switch for a water pump according to claim 1, characterized in that: The outer wall of the water inlet pipe (7) is uniformly provided with external threads.

3. An integrated pressure switch for a water pump according to claim 1, characterized in that: A sealing groove is provided on the outer wall of the lifting piston (4), and a sealing ring (5) is embedded in the sealing groove.

4. An integrated pressure switch for a water pump according to claim 1, characterized in that: Limiting blocks (6) are connected to both ends of the inner wall of the lower housing (3), and the limiting blocks (6) are located below the lifting piston (4).

5. An integrated pressure switch for a water pump according to claim 1, characterized in that: The connecting component (12) includes two sets of connecting blocks (1201). The two sets of connecting blocks (1201) are respectively installed at both ends of the bottom of the upper housing (1). The two ends of the top of the lower housing (3) are provided with connecting grooves (1202) that are inserted and matched with the connecting blocks (1201).

6. An integrated pressure switch for a water pump according to claim 5, characterized in that: Locking assemblies (13) are provided on the top of both sides of the lower housing (3). Each locking assembly (13) includes two sets of protective boxes (1303). The two sets of protective boxes (1303) are respectively installed on the top of both sides of the lower housing (3). A screw rod (1302) is screwed into the inside of each protective box (1303). A movable plate (1306) is rotatably connected to the side of the screw rod (1302) near the lower housing (3). The end of the screw rod (1302) away from the movable plate (1306) extends out of the protective box. (1303) and a turntable (1301) are installed. The top and bottom of the movable plate (1306) are connected to sliders (1305). The top and bottom of the inner wall of the protective box (1303) are provided with sliding grooves (1304) that slide with the sliders (1305). The end of the movable plate (1306) away from the screw (1302) is connected to a plug rod (1307). The outer side of the connecting block (1201) is provided with a slot (1308) that is inserted with the plug rod (1307).

7. An integrated pressure switch for a water pump according to claim 1, characterized in that: The start / stop assembly (11) includes two sets of support rods (1101). The two sets of support rods (1101) are respectively installed on the left and right ends of the inner top wall of the upper housing (1). A stationary contact piece (1102) is installed at the bottom of the support rod (1101). A stationary contact point (1103) is connected to the bottom of the stationary contact piece (1102). An L-shaped support plate (1104) is installed at the output end of the electric push rod (2). A movable contact plate (1106) is slidably installed on the side of the L-shaped support plate (1104) near the center of the upper housing (1). A movable contact point (1105) is connected to the top of the movable contact plate (1106). A pulley (1107) is rotatably connected on the side of the movable contact plate (1106) away from the center of the upper housing (1). A slide rail (1108) is opened on the inner side of the L-shaped support plate (1104) to slide with the pulley (1107).

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