A pressure switch capable of regulating water pressure

Abstract

The utility model discloses a pressure switch capable of regulating water pressure, which relates to the technical field of pressure switches, and comprises a through pipe, a connecting pipe is connected to the top of the inner cavity of the through pipe, a positioning assembly is arranged between the connecting pipe and the through pipe, a second shell is installed on the top of the connecting pipe, a piston is installed on the inner bottom wall of the second shell, connecting columns are connected to both ends of the top of the piston, U-shaped rods are installed on the tops of the two groups of connecting columns, and a telescopic assembly is arranged between the inner bottom wall of the U-shaped rod and the inner top wall of the second shell. The utility model facilitates setting the pressure threshold of the pressure switch through the coordinated arrangement of a turntable, a screw, a first contact plate, a first shell, a second contact plate, a limit assembly and a reset assembly, and can adjust the spacing between the first contact plate and the second contact plate by adjusting the height of the first contact plate, thereby realizing the adjustment of the pressure change and improving the flexibility of the pressure switch when in use.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure switches, in particular to a pressure switch capable of regulating water pressure. Background Art

[0002] In order to adapt to the pace of modernization, many factories in today's society have adopted assembly line production, making large-scale batch production possible. People's daily living environment is also gradually developing towards automation and intelligence, so that pressure switches can be used in the field of hydropower. The water pressure switch is a simple pressure control device. When the measured pressure reaches the rated value, the pressure switch can send a control signal. The working principle of the pressure switch is: when the measured pressure exceeds the rated value, the free end of the elastic element is displaced, and the switch element is pushed directly or after comparison, changing the on-off state of the switch element to achieve the purpose of controlling the measured pressure.

[0003] The Chinese utility model patent announcement number CN212360163U discloses a pressure switch for regulating water pressure, including a pressure switch body, a disassembly and assembly mechanism and a protective mechanism. The disassembly and assembly mechanism includes a connecting pipe, which is fixedly connected to the lower surface of the pressure switch body, a through pipe is provided on the lower surface of the connecting pipe, a first clamping block is fixedly connected to one side surface of the connecting pipe, a sealing gasket is provided at the connection between the connecting pipe and the through pipe, a groove is provided inside the through pipe relative to the outer surface of the connecting pipe, an inner groove is provided on the inner wall surface of the groove relative to the outer surface of the first clamping block, and a first spring is connected to the inner wall surface of the inner groove. The designed disassembly and assembly mechanism enables the pressure switch to be quickly repaired and replaced, thereby making the disassembly and assembly faster, the structure is relatively simple, and the use is more convenient. However, the above-mentioned pressure switch cannot adjust the pressure value according to needs after installation, and the adjustability is not good enough, which needs to be improved. Utility Model Content

[0004] In order to improve the problem that the pressure switch mentioned above cannot adjust the pressure value according to needs after installation and the adjustability is not good enough and needs to be improved, the utility model provides a pressure switch that can adjust the water pressure.

[0005] The utility model provides a pressure switch capable of regulating water pressure, which adopts the following technical scheme:

[0006] A pressure switch capable of regulating water pressure comprises a through pipe, a connecting pipe is connected to the top of the inner cavity of the through pipe, a positioning assembly is arranged between the connecting pipe and the through pipe, a second shell is installed on the top of the connecting pipe, a piston is installed on the inner bottom wall of the second shell, connecting columns are connected at both ends of the top of the piston, U-shaped rods are installed on the tops of two groups of connecting columns, a telescopic assembly is arranged between the inner bottom wall of the U-shaped rod and the inner top wall of the second shell, a first shell is installed on the top of the second shell, both ends of the top of the U-shaped rod extend into the inner cavity of the first shell, a reset assembly is arranged at one end of the inner cavity of the first shell close to the U-shaped rod, a second contact plate is installed on the side of the reset assembly close to the center of the first shell, a screw is screwed on the top of the first shell, a rotating disk is installed on the top of the screw, the bottom of the screw is connected to the first contact plate through a bearing, and a limiting assembly is arranged between the first contact plate and the first shell.

[0007] By adopting the above technical scheme, the connecting pipe and the through pipe can be quickly connected conveniently through the positioning component. When the internal water pressure of the connecting pipe increases, the piston will be forced to move. The piston action applies an upward pressure force to the connecting column, and then the U-shaped rod moves upward and compresses the telescopic component. At the same time, the top of the U-shaped rod applies a force to the second contact plate, causing the second contact plate to slide through the reset component. When the second contact plate is connected to the first contact plate, the signal is transmitted to the controller, and the controller controls the water pump to turn off. When the water pressure needs to be adjusted, the staff manually turns the turntable, and the rotation of the turntable drives the screw to rotate. Since the screw is connected to the first contact plate through a bearing, under the limiting action of the limit assembly, the screw rotates to push the first contact plate downward, so that the distance between the first contact plate and the second contact plate can be adjusted, thereby realizing the adjustment of pressure changes and improving the flexibility of the pressure switch when used.

[0008] Optionally, the positioning assembly includes a baffle, which is sleeved on the lower end of the outer wall of the connecting tube, the diameter of the baffle is equal to the outer diameter of the through tube, the bottom of the baffle is connected to a positioning plate, and the top of the through tube is provided with a positioning groove that is plugged into and cooperates with the positioning plate.

[0009] By adopting the above technical solution, the positioning plate is inserted into the positioning groove so that the bottom of the baffle abuts against the top of the through pipe, thereby facilitating the quick connection of the connecting pipe and the through pipe.

[0010] Optionally, a locking assembly is provided at the top of the right side of the through pipe, and the locking assembly includes a mounting seat, the mounting seat is installed at the top of the right side of the through pipe, a slide is installed in the inner cavity of the mounting seat, the end of the slide away from the through pipe is connected to a movable rod, the end of the movable rod away from the slide extends out of the mounting seat and is installed with a pull plate, the outer wall of the movable rod is sleeved with a positioning spring, the positioning spring is located between the slide and the inner wall of the mounting seat, the left end of the slide is connected to an insertion rod, and the right side of the positioning plate is provided with a slot that is plugged into and cooperates with the insertion rod.

[0011] By adopting the above technical solution, when it is necessary to release the fixing effect of the insertion rod on the positioning plate, pull the mounting seat to the right, the mounting seat drives the slide plate to move to the right through the movable rod and compresses the positioning spring, and the movement of the slide plate to the right drives the insertion rod to move to the right until the insertion rod is separated from the slot.

[0012] Optionally, the telescopic assembly includes a first mounting plate, which is mounted on the inner top wall of the second shell, and the bottom of the first mounting plate is evenly connected with buffer springs, and the end of the buffer spring away from the first mounting plate is connected to a second mounting plate, and the bottom of the second mounting plate is fixedly connected to the inner bottom wall of the U-shaped rod.

[0013] By adopting the above technical solution, when the U-shaped rod moves upward, it drives the second mounting plate to move upward, and the second mounting plate moves upward to compress the buffer spring, thereby facilitating the auxiliary U-shaped rod to reset through the elastic force of the buffer spring.

[0014] Optionally, the limit assembly includes two groups of limit rods, which are respectively installed at two ends of the top of the first shock plate, and the tops of the two groups of limit rods extend out of the first shell, and both ends of the top of the first shell are provided with limit holes that match the limit rods.

[0015] By adopting the above technical solution, when the first contact plate is lifted or lowered, the limiting rod can be driven to slide in the limiting hole, thereby limiting the first contact plate and preventing the first contact plate from rotating.

[0016] Optionally, the reset assembly includes a fixing plate, which is mounted on the side wall of the inner cavity of the first shell, and a fixing rod is connected between the fixing plates. The outer walls of the fixing rod are respectively sleeved with a reset spring and a sliding sleeve, and a connecting block is connected to the side of the sliding sleeve close to the center of the first shell, and the end of the connecting block away from the sliding sleeve is fixedly connected to one end of the second shock plate.

[0017] By adopting the above technical solution, when the U-shaped rod moves upward against the second contact plate, the second contact plate drives the sliding sleeve to slide along the fixed rod through the connecting block, thereby compressing the reset spring, and the elastic force of the reset spring facilitates the reset of the second contact plate.

[0018] In summary, the present invention has at least one of the following beneficial effects:

[0019] (1) The pressure threshold of the pressure switch can be conveniently set by coordinating the turntable, the screw, the first contact plate, the first shell, the second contact plate, the limit assembly and the reset assembly. By adjusting the height of the first contact plate, the distance between the first contact plate and the second contact plate can be adjusted, thereby adjusting the pressure change and improving the flexibility of the pressure switch when used.

[0020] (2) By coordinating the baffle, the positioning plate and the positioning groove, the positioning plate is inserted into the positioning groove, which facilitates the connection pipe to be inserted into the inner cavity of the through pipe, thereby facilitating the rapid installation of the pressure switch and facilitating subsequent disassembly for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0023] Figure 2 This is a front view structural schematic diagram of the utility model;

[0024] Figure 3 For the utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0025] Figure 4 For the utility model Figure 1 Schematic diagram of the structure at point B in the middle.

[0026] In the figure: 1, turntable; 2, screw; 3, first contact plate; 4, first housing; 5, second contact plate; 6, telescopic assembly; 601, first mounting plate; 602, buffer spring; 603, second mounting plate; 7, U-shaped rod; 8, second housing; 9, connecting pipe; 10, positioning assembly; 1001, baffle; 1002, positioning plate; 1003, positioning groove; 11, through pipe; 12, piston; 13, connecting column; 1 4. Limiting assembly; 1401. Limiting hole; 1402. Limiting rod; 15. Locking assembly; 1501. Slot; 1502. Inserting rod; 1503. Slide plate; 1504. Movable rod; 1505. Positioning spring; 1506. Pull plate; 1507. Mounting seat; 16. Reset assembly; 1601. Fixed plate; 1602. Reset spring; 1603. Connecting block; 1604. Sliding sleeve; 1605. Fixed rod. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-4 The utility model is described in further detail.

[0028] Please refer to the attached figure in the instruction manual Figure 1 and Figure 3 The utility model provides an embodiment: a pressure switch capable of regulating water pressure, comprising a through pipe 11, the top of the inner cavity of the through pipe 11 is connected with a connecting pipe 9, a positioning assembly 10 is arranged between the connecting pipe 9 and the through pipe 11, the positioning assembly 10 comprises a baffle 1001, the baffle 1001 is fixedly sleeved on the lower end of the outer wall of the connecting pipe 9, the diameter of the baffle 1001 is equal to the outer diameter of the through pipe 11, a positioning plate 1002 is fixedly connected to the edge of the bottom of the baffle 1001, and a positioning groove 1003 for plugging and matching with the positioning plate 1002 is provided at the top of the through pipe 11. The positioning plate 1002 is plugged into the positioning groove 1003, so that the bottom of the baffle 1001 abuts against the top of the through pipe 11, thereby facilitating the quick connection of the connecting pipe 9 and the through pipe 11.

[0029] Please refer to the attached figure in the instruction manual Figure 1 and Figure 3A locking assembly 15 is provided at the top of the right side of the through pipe 11, and the locking assembly 15 includes a mounting seat 1507. The mounting seat 1507 is mounted on the top of the right side of the through pipe 11. A slide plate 1503 is slidably installed in the inner cavity of the mounting seat 1507. The end of the slide plate 1503 away from the through pipe 11 is fixedly connected to a movable rod 1504. The end of the movable rod 1504 away from the slide plate 1503 extends out of the mounting seat 1507 and is installed with a pull plate 1506. The outer wall of the movable rod 1504 is sleeved with a positioning spring 1505, and the positioning spring 1505 is located between the slide plate 1503 and the inner wall of the mounting seat 1507. The left end of the slide plate 1503 is connected to the insertion rod 1502, and the right side of the positioning plate 1002 is provided with a slot 1501 that is plugged into and cooperates with the insertion rod 1502. When it is necessary to release the fixing effect of the insertion rod 1502 on the positioning plate 1002, pull the mounting seat 1507 to the right. The mounting seat 1507 drives the slide plate 1503 to move to the right through the movable rod 1504 and compresses the positioning spring 1505. The slide plate 1503 moves to the right and drives the insertion rod 1502 to move to the right until the insertion rod 1502 is separated from the slot 1501.

[0030] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 The second housing 8 is fixedly mounted on the top of the connecting tube 9, the inner bottom wall of the second housing 8 is slidably mounted with a piston 12, both ends of the top of the piston 12 are fixedly connected with connecting columns 13, the tops of the two groups of connecting columns 13 are mounted with U-shaped rods 7, a telescopic assembly 6 is arranged between the inner bottom wall of the U-shaped rod 7 and the inner top wall of the second housing 8, the telescopic assembly 6 comprises a first mounting plate 601, the first mounting plate 601 is mounted on the inner top wall of the second housing 8, the bottom of the first mounting plate 601 is connected with buffer springs 602 at equal intervals, the end of the buffer spring 602 away from the first mounting plate 601 is connected with a second mounting plate 603, the bottom of the second mounting plate 603 is fixedly connected with the inner bottom wall of the U-shaped rod 7. When the U-shaped rod 7 moves upward, it drives the second mounting plate 603 to move upward, the second mounting plate 603 moves upward to compress the buffer spring 602, and the elastic force of the buffer spring 602 facilitates the auxiliary U-shaped rod 7 to reset.

[0031] Please refer to the attached figure in the instruction manual Figure 1 and Figure 4The first shell 4 is fixedly installed on the top of the second shell 8, and both ends of the top of the U-shaped rod 7 extend into the inner cavity of the first shell 4. A reset component 16 is provided at one end of the inner cavity of the first shell 4 close to the U-shaped rod 7, and a second shock pad 5 is installed on the side of the reset component 16 close to the center of the first shell 4. The reset component 16 includes a fixed plate 1601, which is installed on the side wall of the inner cavity of the first shell 4. Fixed rods 1605 are connected between the fixed plates 1601, and the outer walls of the fixed rods 1605 are respectively sleeved with reset springs 1602 and sliding sleeves 1604. A connecting block 1603 is connected to the side of the sliding sleeve 1604 close to the center of the first shell 4, and an end of the connecting block 1603 away from the sliding sleeve 1604 is fixedly connected to one end of the second shock pad 5. When the U-shaped rod 7 moves upward against the second contact plate 5, the second contact plate 5 drives the sliding sleeve 1604 to slide along the fixed rod 1605 through the connecting block 1603, thereby compressing the reset spring 1602, and the elastic force of the reset spring 1602 facilitates the reset of the second contact plate 5.

[0032] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 The top of the first shell 4 is screwed with a screw rod 2, and a turntable 1 is fixedly installed on the top of the screw rod 2, so that the staff can hold the turntable 1 to rotate the screw rod 2. The bottom of the screw rod 2 is rotatably connected to the first electric shock plate 3 through a bearing. A limit assembly 14 is arranged between the first electric shock plate 3 and the first shell 4. The limit assembly 14 includes two groups of limit rods 1402, and the two groups of limit rods 1402 are respectively fixedly installed at the two ends of the top of the first electric shock plate 3. The tops of the two groups of limit rods 1402 extend out of the first shell 4, and the two ends of the top of the first shell 4 are provided with limit holes 1401 that match the limit rods 1402. When the first electric shock plate 3 is lifted or lowered, the limit rod 1402 can be driven to slide in the limit hole 1401, so that the first electric shock plate 3 can be limited to prevent the first electric shock plate 3 from rotating.

[0033] Working principle: When using the pressure switch, the staff pulls the pull plate 1506 to the right, and the pull plate 1506 drives the slide plate 1503 to move to the right through the movable rod 1504. The slide plate 1503 moves to the right to compress the positioning spring 1505. When the slide plate 1503 moves to the right, it drives the insertion rod 1502 to move to the right. At this time, the positioning plate 1002 is inserted into the positioning groove 1003 until the bottom of the baffle 1001 contacts the top of the through pipe 11, and then the mounting seat 1507 is released. Under the elastic force of the positioning spring 1505, the slide plate 1503 is reset and drives the insertion rod 1502 to be inserted into the slot 1501, so that the positioning plate 1002 can be locked and fixed by the insertion rod 1502, so that the positioning plate 1002 and the positioning groove 1003 are more firmly connected, so that the connecting pipe 9 and the through pipe 11 can be connected.

[0034] When the internal water pressure of the connecting pipe 9 increases, the piston 12 is forced to move. The action of the piston 12 applies an upward force to the connecting column 13, and then the U-shaped rod 7 moves upward and compresses the buffer spring 602. At the same time, the top of the U-shaped rod 7 applies a force to the second contact plate 5, so that the second contact plate 5 drives the sliding sleeve 1604 to slide along the fixed rod 1605 through the connecting block 1603. When the second contact plate 5 is connected to the first contact plate 3, the signal is transmitted to the controller, and the controller controls the water pump to turn off. When the water pressure needs to be adjusted, the staff manually rotates the turntable 1, and the rotation of the turntable 1 drives the screw 2 to rotate. Since the screw 2 is connected to the first contact plate 3 through the bearing, under the limiting action of the limit assembly 14, the screw 2 rotates to push the first contact plate 3 to move downward, so that the distance between the first contact plate 3 and the second contact plate 5 can be adjusted, thereby realizing the adjustment of the pressure change, thereby improving the flexibility of the pressure switch when used.

[0035] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A pressure switch capable of regulating water pressure, comprising a through pipe (11), characterized in that: A connecting pipe (9) is connected to the top of the inner cavity of the through pipe (11); a positioning assembly (10) is arranged between the connecting pipe (9) and the through pipe (11); a second shell (8) is installed on the top of the connecting pipe (9); a piston (12) is installed on the inner bottom wall of the second shell (8); connecting columns (13) are connected to both ends of the top of the piston (12); U-shaped rods (7) are installed on the tops of the two groups of connecting columns (13); a telescopic assembly (6) is arranged between the inner bottom wall of the U-shaped rod (7) and the inner top wall of the second shell (8); and a first shell (8) is installed on the top of the second shell (8). (4), both ends of the top of the U-shaped rod (7) extend into the inner cavity of the first shell (4), a reset component (16) is provided at one end of the inner cavity of the first shell (4) close to the U-shaped rod (7), a second contact plate (5) is installed on one side of the reset component (16) close to the center of the first shell (4), a screw rod (2) is screwed to the top of the first shell (4), a rotating disk (1) is installed on the top of the screw rod (2), a first contact plate (3) is connected to the bottom of the screw rod (2) via a bearing, and a limit assembly (14) is provided between the first contact plate (3) and the first shell (4).

2. A pressure switch capable of regulating water pressure according to claim 1, characterized in that: The positioning assembly (10) comprises a baffle (1001), the baffle (1001) being sleeved on the lower end of the outer wall of the connecting pipe (9), the diameter of the baffle (1001) being equal to the outer diameter of the through pipe (11), the bottom of the baffle (1001) being connected to a positioning plate (1002), and the top of the through pipe (11) being provided with a positioning groove (1003) which is plugged into and matched with the positioning plate (1002).

3. A pressure switch capable of regulating water pressure according to claim 2, characterized in that: A locking assembly (15) is provided at the top of the right side of the through pipe (11), and the locking assembly (15) comprises a mounting seat (1507). The mounting seat (1507) is mounted at the top of the right side of the through pipe (11), and a slide plate (1503) is installed in the inner cavity of the mounting seat (1507). An end of the slide plate (1503) away from the through pipe (11) is connected to a movable rod (1504), and an end of the movable rod (1504) away from the slide plate (1503) is connected to the movable rod (1504). The mounting seat (1507) extends out and is provided with a pull plate (1506), the outer wall of the movable rod (1504) is provided with a positioning spring (1505), the positioning spring (1505) is located between the slide plate (1503) and the inner wall of the mounting seat (1507), the left end of the slide plate (1503) is connected with an insertion rod (1502), and the right side of the positioning plate (1002) is provided with a slot (1501) which is plugged into and matched with the insertion rod (1502).

4. The pressure switch capable of regulating water pressure according to claim 1, characterized in that: The telescopic assembly (6) comprises a first mounting plate (601), the first mounting plate (601) being mounted on the inner top wall of the second shell (8), the bottom of the first mounting plate (601) being connected to buffer springs (602) at equal intervals, one end of the buffer spring (602) away from the first mounting plate (601) being connected to a second mounting plate (603), and the bottom of the second mounting plate (603) being fixedly connected to the inner bottom wall of the U-shaped rod (7).

5. The pressure switch capable of regulating water pressure according to claim 1, characterized in that: The limiting assembly (14) comprises two groups of limiting rods (1402), the two groups of limiting rods (1402) being respectively mounted at two ends of the top of the first electric shock plate (3), the tops of the two groups of limiting rods (1402) both extending out of the first shell (4), and limiting holes (1401) matching the limiting rods (1402) being provided at both ends of the top of the first shell (4).

6. The pressure switch capable of regulating water pressure according to claim 1, characterized in that: The reset assembly (16) comprises a fixing plate (1601), wherein the fixing plate (1601) is mounted on the side wall of the inner cavity of the first shell (4), a fixing rod (1605) is connected between the fixing plates (1601), and the outer wall of the fixing rod (1605) is respectively sleeved with a reset spring (1602) and a sliding sleeve (1604), and a connecting block (1603) is connected to a side of the sliding sleeve (1604) close to the center of the first shell (4), and an end of the connecting block (1603) away from the sliding sleeve (1604) is fixedly connected to one end of the second contact plate (5).

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