Pure water supply constant pressure device

Abstract

The utility model discloses a pure water constant-pressure water supply device which comprises a water tower, a main water supply pipe, a main water pump and an auxiliary water pump, water inlets of the main water pump and the auxiliary water pump are communicated with the water tower through pipe fittings, and water outlets of the main water pump and the auxiliary water pump are communicated with the main water supply pipe through pipe fittings. A piston cylinder communicated with the main water supply pipe is fixedly connected to the main water supply pipe, a piston is slidably connected into the piston cylinder in a sealed mode, a piston rod is fixedly connected to the side, away from the main water supply pipe, of the piston, and a first compression spring is fixedly connected between the side, away from the main water supply pipe, of the piston and the piston cylinder. A pipe fitting between the main water pump and the main water supply pipe is fixedly connected with a valve cylinder, a valve element is slidably connected in the valve cylinder, and a connecting rope is fixedly connected between the plug rod and the valve element; when water pressure in the main water supply pipe is normal, the piston is located on the side, away from the main water supply pipe, of the piston barrel, and the valve element is in a closed state. The structure is simpler, the valve element can be stably adjusted, and the stability of water pressure adjustment in the main water supply pipeline is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to water supply equipment supporting device technical field, concretely is a pure water water supply constant pressure device. BACKGROUND

[0002] Traditional medical laboratory department sets up laboratory central pure water system, and can directly provide pure water to the testing equipment by connecting the testing equipment with the central pure water system. Since the central pure water system adopts the mode of first storing pure water in a pressure tank and then supplying water to each group of testing equipment by using a booster pump, when the number of simultaneously used water points is too large, the water supply pressure in the pure water pipeline will decrease, which causes the pure water to be unable to be provided to each testing equipment at the set flow rate, and affects the accuracy of the test results.

[0003] A medical pure water constant pressure adjusting device is disclosed in a Chinese patent application with the publication number CN118242562A, which comprises a main water supply component, an inner impeller component, a water-driven moving assembly, a pressure boosting assembly, a transmission valve body assembly, and a reset assembly. A impeller is screwed into the impeller cavity in the main water supply pipeline. The water-driven moving assembly is installed at the outer end of the impeller shaft. Different sizes of centrifugal force generated by the rotation of the outer fixed fan seat can drive the push column to move to different outer limit positions, so that the passive rack connected to the valve core in the original closed state can be touched and controlled. As the rotation speed of the impeller decreases, the distance that the push column can push the passive rack increases gradually, which can gradually increase the opening amount of the valve core. The water pressure sensor senses the decrease in water pressure, and automatically starts the booster pump. The linear control of the decrease in the rotation speed of the impeller on the increase in the opening amount of the valve core can be achieved through a simple mechanical structure. Through the reset assembly, the automatic closing and resetting action of the valve core can be realized after the pressure is restored.

[0004] The above-mentioned patent has the following defects: the structure for controlling the valve core is complex, and the different sizes of centrifugal force generated by the rotation of the outer fixed fan seat can drive the push column to move to different outer limit positions. Once the flow rate in the main water supply pipeline is too low, the outer fixed fan seat may not be able to rotate, which in turn cannot drive the push seat to move, and thus cannot adjust the valve core, and further cannot adjust the water pressure in the main water supply pipeline. The adjustment of the water pressure in the main water supply pipeline is not stable. UTILITY MODEL CONTENTS

[0005] In order to solve at least one of the technical problems mentioned in the background art, the purpose of the utility model is to provide a pure water water supply constant pressure device, which not only has a simpler structure, but also can stably adjust the valve core and ensure the stability of the water pressure adjustment of the water supply pipeline.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0007] A pure water constant pressure water supply device, comprising a water tower, a main water supply pipe, a main water pump, and an auxiliary water pump, wherein the water inlets of the main water pump and the auxiliary water pump are connected to the water tower through pipe fittings, and the water outlets of the main water pump and the auxiliary water pump are connected to the main water supply pipe through pipe fittings;

[0008] A plug cylinder connected to the main water supply pipe is fixedly connected to the main water supply pipe, a piston is sealingly and slidably connected in the plug cylinder, a plug rod is fixedly connected to the side of the piston away from the main water supply pipe, and a first compression spring is fixedly connected between the side of the piston away from the main water supply pipe and the plug cylinder;

[0009] A valve is fixedly connected to the pipe fitting between the main water pump and the main water supply pipe. The valve includes a valve cylinder and a valve core slidably connected in the valve cylinder, and a connecting rope is fixedly connected between the plug rod and the valve core. When the water pressure in the main water supply pipe is normal, the piston is located on the side of the plug cylinder away from the main water supply pipe, the valve is in a closed state, and the connecting rope is in a taut state.

[0010] Preferably, a second compression spring is installed between the top of the valve core and the top of the valve cylinder, and the elastic force of the second compression spring is smaller than that of the first compression spring.

[0011] Preferably, it further comprises an auxiliary support member for supporting the plug rod, the auxiliary support member comprises a support plate, a linear bearing is mounted on the top end of the support plate, and the plug rod is slidably connected in the linear bearing.

[0012] Preferably, a paddle is fixedly connected to the plug rod, and a switch for controlling the start and stop of the auxiliary water pump is installed on the auxiliary support member.

[0013] Preferably, two fixed pulleys are further included, wherein one fixed pulley is installed on the top of the valve cylinder and the installation position of the other is located on the movement trajectory of the plug rod, and the connecting rope is in contact with the two fixed pulleys in sequence.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The present application can open the valve when the water pressure in the pipe decreases through the arrangement and coordination of the plug cylinder, plug rod, piston, connecting rope, and first compression spring, thereby increasing the water supply route of the auxiliary water pump. Overall, not only is the structure simpler, but the valve core can also be adjusted more stably, thereby improving the stability of water pressure regulation in the main water supply pipe. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic top view of the overall structure of the utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the cross section in the AA direction;

[0019] Figure 4 for Figure 2 Schematic diagram of the cross section in the middle BB direction;

[0020] Figure 5 This is a schematic structural diagram of the valve of the utility model.

[0021] In the figure: 1. Water tower; 2. Main water supply pipe; 3. Main water pump; 4. Auxiliary water pump; 51. Plug cylinder; 52. Piston; 53. Plug rod; 54. First compression spring; 61. Valve cylinder; 62. Valve core; 7. Connecting rope; 8. Second compression spring; 9. Auxiliary support member; 91. Support plate; 92. Linear bearing; 10. Fixed pulley; 111. Paddle; 112. Switch. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Please refer to Figure 1 - Figure 5 This embodiment provides a pure water constant pressure water supply device, including a water tower 1, a main water supply pipe 2, a main water pump 3, and an auxiliary water pump 4. The water inlets of the main water pump 3 and the auxiliary water pump 4 are connected to the water tower 1 through pipes, and the water outlets of the main water pump 3 and the auxiliary water pump 4 are connected to the main water supply pipe 2 through pipes. A plug cylinder 51 connected to the main water supply pipe 2 is fixedly connected to the main water supply pipe 2, and a piston 52 is sealingly and slidingly connected in the plug cylinder 51. A plug rod 53 is fixedly connected to the side of the piston 52 away from the main water supply pipe 2, and a first compression spring 54 is fixedly connected between the side of the piston 52 away from the main water supply pipe 2 and the plug cylinder 51; a valve cylinder 61 is fixedly connected to the pipe fitting between the main water pump 3 and the main water supply pipe 2, a valve core 62 is slidingly connected in the valve cylinder 61, and a connecting rope 7 is fixedly connected between the plug rod 53 and the valve core 62; when the water pressure in the main water supply pipe 2 is normal, the piston 52 is located on the side of the plug cylinder 51 away from the main water supply pipe 2, the valve is in a closed state, and the connecting rope 7 is in a taut state. It should be noted here that the valve is closed when the water inlet and water outlet of the valve cylinder 61 of the present application and the valve cylinder 61 completely block the water inlet and water outlet of the valve core 62. The valve is not fully opened when the water inlet and water outlet of the valve cylinder 61 partially overlap with the water inlet and water outlet of the valve core 62. The valve is fully opened when the water inlet and water outlet of the valve cylinder 61 are completely coaxially overlapped with the water inlet and water outlet of the valve core 62.

[0024] The following is a further introduction in combination with specific usage scenarios. First, when the main water pump 3 can ensure the stability of the flow and the balance of water pressure in the main water supply pipe 2, the main water pump 3 is used alone to supply water. At this time, the water in the main water supply pipe 2 will push the piston 52 to a position away from the main water supply pipe 2, and the valve core 62 in the valve cylinder 61 is closed; when the water pressure in the main water pump 3 decreases, the piston 52 will be pulled along the plug cylinder 51 toward the main water supply pipe 2 under the elastic force of the first compression spring 54, and the connecting rope 7 will be pulled through the plug rod 53, further pulling the valve core 62, so that the valve slowly opens. At this time, the auxiliary water pump 4 is turned on, and the water in the water tower 1 is supplied to the main water supply pipe 2 through the valve through the auxiliary water pump 4, ensuring that the water supply can be constant and stable.

[0025] The present application can open the valve when the water pressure in the pipe decreases through the arrangement and coordination of the plug cylinder 51, the plug rod 53, the piston 52, the connecting rope 7, and the first compression spring 54, thereby increasing the water supply route of the auxiliary water pump 4. Overall, not only is the structure simpler, but the valve core 62 can also be adjusted more stably, thereby improving the stability of the water pressure regulation in the main water supply pipe 2.

[0026] Reference Figure 2 and Figure 4 As a specific implementation of the embodiment of the present application, a second compression spring 8 is installed between the top of the valve core 62 and the top of the valve cylinder 61, and the elastic force of the second compression spring 8 is smaller than that of the first compression spring 54.

[0027] In combination with the specific usage scenario, the second compression spring 8 can be used to ensure that the water supply flow to the main water supply pipe 2 returns to a normal level. At this time, the piston 52 is re-uplifted by the water in the main water supply pipe 2, so that the plug rod 53 continues to extend out of the plug cylinder 51, making the connecting rope 7 loose. The second compression spring 8 can push the valve core 62 downward as the piston 52 moves, thereby re-closing the valve, and ensuring that the connecting rope 7 is always in a tensioned state, thereby ensuring the stability of the device.

[0028] Reference Figure 1 、 Figure 3 、 Figure 4 As a specific implementation of the embodiment of the present application, it also includes an auxiliary support member 9 for supporting the plug rod 53. The auxiliary support member 9 includes a support plate 91. A linear bearing 92 is installed on the top of the support plate 91. The plug rod 53 is slidably connected in the linear bearing 92.

[0029] In combination with specific usage scenarios, the support plate 91 and the linear bearing 92 on the support plate 91 are used to ensure that the movement of the plug rod 53 is more linear and straight, thereby ensuring the stability of the pulling of the valve core 62.

[0030] Referring to the figure, as a specific implementation of an embodiment of the present application, a paddle 111 is fixedly connected to the plug rod 53, and a switch 112 for controlling the start and stop of the auxiliary water pump 4 is installed on the auxiliary support member 9. The paddle 111 can toggle the switch 112 to adjust the state of the switch 112, and further adjust the start and stop state of the auxiliary water pump 4.

[0031] In combination with the specific usage scenario, when the water pressure in the main water supply pipe 2 decreases, the plug rod 53 moves along the plug cylinder 51 toward the main water supply pipe 2, thereby driving the paddle 111 to touch the switch 112, and then starting the auxiliary water pump 4 for auxiliary water supply.

[0032] Reference Figure 1 - Figure 5 As a specific implementation of the embodiment of the present application, it also includes two fixed pulleys 10, one of which is installed on the top of the valve cylinder 61, and the installation position of the other is located on the movement trajectory of the plug rod 53, and the connecting rope 7 is in contact with the two fixed pulleys 10 in turn.

[0033] In combination with the specific usage scenario, two fixed pulleys 10 are used to guide the connecting rope 7 between the plug rod 53 and the valve core 62 to ensure that the direction of the force of the plug rod 53 pulling the connecting rope 7 is along the axial direction of the plug rod 53, and also to ensure that the direction of the force of the connecting rope 7 on the valve core 62 is along the axial direction of the valve core 62, thereby ensuring that the opening process of the valve core 62 is smoother and more stable.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A pure water constant pressure water supply device, comprising a water tower (1), a main water supply pipe (2), a main water pump (3), and an auxiliary water pump (4), wherein the water inlets of the main water pump (3) and the auxiliary water pump (4) are connected to the water tower (1) through pipe fittings, and the water outlets of the main water pump (3) and the auxiliary water pump (4) are connected to the main water supply pipe (2) through pipe fittings; characterized in that, A plug cylinder (51) in communication with the main water supply pipe (2) is fixedly connected to the main water supply pipe (2); a piston (52) is sealingly and slidably connected inside the plug cylinder (51); a plug rod (53) is fixedly connected to the side of the piston (52) away from the main water supply pipe (2); and a first compression spring (54) is fixedly connected between the side of the piston (52) away from the main water supply pipe (2) and the plug cylinder (51); A valve is fixedly connected to the pipe fitting between the main water pump (3) and the main water supply pipe (2), the valve comprising a valve cylinder (61) and a valve core (62) slidably connected in the valve cylinder (61), and a connecting rope (7) is fixedly connected between the plug rod (53) and the valve core (62); When the water pressure in the main water supply pipe (2) is normal, the piston (52) is located on the side of the plug cylinder (51) away from the main water supply pipe (2), the valve is in a closed state, and the connecting rope (7) is in a tensioned state.

2. A pure water constant pressure water supply device according to claim 1, characterized in that: A second compression spring (8) is installed between the top of the valve core (62) and the top of the valve cylinder (61), and the elastic force of the second compression spring (8) is smaller than that of the first compression spring (54).

3. A pure water constant pressure water supply device according to claim 1, characterized in that: It also includes an auxiliary support member (9) for supporting the plug rod (53), the auxiliary support member (9) includes a support plate (91), a linear bearing (92) is installed on the top end of the support plate (91), and the plug rod (53) is slidably connected in the linear bearing (92).

4. A pure water constant pressure water supply device according to claim 3, characterized in that: A paddle (111) is fixedly connected to the plug rod (53), and a switch (112) for controlling the start and stop of the auxiliary water pump (4) is installed on the auxiliary support member (9).

5. A pure water constant pressure water supply device according to claim 1, characterized in that: It also includes two fixed pulleys (10), one of which is installed on the top of the valve cylinder (61), and the other is installed on the motion trajectory of the plug rod (53), and the connecting rope (7) is in contact with the two fixed pulleys (10) in sequence.

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