Venturi tube water pressure valve

Abstract

The venturi tube water pressure valve comprises a valve body, a silica gel sleeve and a pressing rod, a water storage cavity is formed in the valve body, a water inlet connector communicated with the water storage cavity is arranged on one side of the valve body, a vertical venturi tube is arranged at the bottom of the valve body, and a water inlet port of the venturi tube is communicated with the water storage cavity; a through hole communicated with the water storage cavity is formed in the top end of the valve body, and a supporting ring surrounding a water inlet port of the venturi tube is arranged on the bottom wall of the water storage cavity of the valve body in a protruding mode. A flat silica gel plug is formed at the bottom of the silica gel sleeve to seal the bottom end of an inner hole of the silica gel sleeve, the silica gel sleeve is vertically arranged in the water storage cavity and connected with the inner side wall of the water storage cavity to seal the through hole, a gap is formed between the side wall of the silica gel sleeve and the peripheral wall of the silica gel plug, and the bottom face of the silica gel plug makes contact with the top face of the supporting ring to seal the interior of the supporting ring. The pressing rod is located in the silica gel sleeve, one end of the pressing rod is fixedly connected with the silica gel plug, and the other end of the pressing rod extends out of the valve body through the through hole.

Description

Technical Field

[0001] The present application relates to the technical field of valves, and more specifically, it relates to a venturi water pressure valve. Background Art

[0002] A venturi is a device for measuring the pressure difference of a fluid. By combining a venturi with a corresponding flow meter, the total flow rate of the fluid passing through the pipeline can be measured. A venturi water pressure valve is usually applied to equipment that needs to control the overall water intake, such as the water used in the cleaning liquid dilution mechanism of a cleaning liquid machine. In related technologies, a venturi water pressure valve generally includes a main body. An activity chamber is arranged inside the main body. The main body is provided with a water inlet joint communicating with a water storage chamber. The water supply equipment is connected through the water inlet joint. The venturi is arranged inside the main body and the water inlet port of the venturi communicates with the activity chamber. The main body is provided with a through hole communicating with the activity chamber. The center of the through hole and the center of the water inlet port of the venturi are on the same straight line. A silica gel soft sleeve is arranged inside the activity chamber. The silica gel soft sleeve is connected to the periphery of the through hole to seal the through hole. A plug is formed at the bottom of the silica gel soft sleeve. The plug is connected with a pressure rod. The pressure rod passes through the main body from the through hole to the outside of the main body. An abutting ring is arranged on the outer wall of the pressure rod. A spring is arranged between the abutting ring and the inner wall of the activity chamber. The pressure rod is pressurized by the spring. The plug seals the water inlet port of the venturi to seal the venturi. By pulling up the pressure rod to further compress the spring, the water in the water storage chamber flows into the venturi.

[0003] Using the above related technologies, because it is necessary to seal a relatively high water pressure (generally greater than 80 PSI), a spring with a very large elastic force is required to provide a pressure to press the pressure rod to meet the sealing force required by the plug. Therefore, when the water storage chamber and the venturi are connected by pulling the pressure rod, it is necessary to overcome the pressure of the spring and the pressure of the water, and a relatively large pulling force is required, which is rather troublesome. Summary of the Utility Model

[0004] In order to solve the problem in related technologies that a spring with a relatively large elastic force is used to press the pressure rod so that the plug has a relatively large sealing force to resist high water pressure, and when water needs to be introduced into the venturi, a relatively large force is required to pull the pull rod, which is rather troublesome, the present application provides a venturi water pressure valve.

[0005] A venturi water pressure valve includes a valve body. A water storage chamber is arranged inside the valve body, and a water inlet joint communicating with the water storage chamber is arranged on one side of the valve body. A vertical venturi is arranged at the bottom of the valve body. The water inlet port of the venturi communicates with the water storage chamber. The valve body is provided with a through hole communicating with the water storage chamber at the top. The valve body is convexly provided with a support ring surrounding the water inlet port of the venturi on the bottom wall of the water storage chamber.

[0006] It further includes a silica gel sleeve and a pressure rod. A flat silica gel plug is formed at the bottom of the silica gel sleeve to seal the bottom end of its inner hole. The silica gel sleeve stands upright inside the water storage cavity and is connected to the inner side wall of the water storage cavity to seal the through hole. There is a gap between the side wall of the silica gel sleeve and the peripheral wall of the silica gel plug. The bottom surface of the silica gel plug contacts and seals the inside of the support ring. The pressure rod is inside the silica gel sleeve, one end of which is fixedly connected to the silica gel plug, and the other end extends out of the valve body through the through hole.

[0007] By adopting the above technical solution, the water inlet joint is used to connect an external water supply device to supply water to the water storage cavity. The inside of the water storage cavity is a water-filled space and a high-pressure area, and the inside of the support ring is a water passage space and a low-pressure area. The silica gel plug is flat and there is a gap between the side wall of the silica gel sleeve and the peripheral wall of the silica gel plug, so that the water pressure acts on the upper surface of the silica gel plug. There is a pressure difference between the upper surface and the lower surface of the silica gel plug. The greater the water pressure in the high-pressure area, the greater the downward pressure on the upper surface of the silica gel plug, and the stronger the contact force between the bottom surface of the silica gel plug and the top surface of the support ring, making the sealing effect of the silica gel plug on the inside of the support ring better. By sealing the inside of the support ring, the water in the water storage cavity cannot flow into the venturi tube. It is self-sealed by water pressure. When pulling the pressure rod to make the silica gel plug leave the support ring and allow water to flow into the venturi tube, only the water pressure needs to be overcome, and the required pulling force is small and it is more convenient.

[0008] Preferably, a support disc is embedded inside the silica gel plug. The support disc is made of hard metal, and the diameter of the support disc is larger than the inner diameter of the support ring.

[0009] By adopting the above technical solution, the silica gel plug is flexible and is easily deformed under high pressure. With the support of the support disc, the silica gel plug has better stability.

[0010] Preferably, it further includes a spring and a support cover. The support cover is in a barrel shape, with a perforation provided at the bottom of its top opening. The support cover stands upright inside the silica gel sleeve, and its top end is connected and fixed to the valve body and is aligned with the through hole. The pressure rod passes through the perforation into the inside of the support cover, and the outer wall of the pressure rod contacts the inner wall of the perforation. And an abutting ring is provided on the outer wall of the part of the pressure rod inside the support cover. The spring is installed inside the support cover and sleeved on the pressure rod, and one end of the spring abuts against the top wall of the water storage cavity, and the other end of the spring abuts against the abutting ring. When the silica gel plug contacts the support ring, the spring is in a relaxed state.

[0011] By adopting the above technical solution, the perforated limit pressure rod enables the pressure rod to move stably and is not easily displaced, so that the silicone plug can accurately contact the support ring when returning after leaving the support ring. When the pressure rod is pulled upward, the spring is compressed. The spring is used to assist the pressure rod to return, making the return of the pressure rod relatively easy. A small elastic force spring can be selected for the spring.

[0012] Preferably, it further includes a labor-saving lever. The labor-saving lever is arranged at the top of the valve body, and the bearing arm of the labor-saving lever is hinged to the pressure rod, and the labor-saving lever is used to pry the pressure rod to lift and lower.

[0013] By adopting the above technical solution, the labor-saving lever pries the pressure rod to lift and lower, which is labor-saving and convenient.

[0014] The beneficial technical effects of this application are as follows: The water inlet joint is used to connect an external water supply device to supply water to the water storage cavity. The inside of the water storage cavity is a water-filled space and a high-pressure area. The inside of the support ring is a water passage space and a low-pressure area. The silicone plug is flat, and there is a gap between the connection between the silicone sleeve and the silicone plug and the peripheral wall of the silicone plug, so that the water pressure acts on the upper surface of the silicone plug. There is a pressure difference between the upper surface and the lower surface of the silicone plug. The greater the water pressure in the high-pressure area, the greater the downward pressure on the upper surface of the silicone plug, and the stronger the contact force between the bottom surface of the silicone plug and the top surface of the support ring, making the sealing effect of the silicone plug on the inside of the support ring better. By sealing the inside of the support ring, the water in the water storage cavity cannot flow into the venturi tube. Through self-sealing by water pressure, when pulling the pressure rod to make the silicone plug leave the support ring and allowing water to flow into the venturi tube, only the water pressure needs to be overcome, and the required pulling force is small and it is more convenient. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a venturi tube water pressure valve according to this embodiment.

[0016] Figure 2 It is a sectional view of a venturi tube water pressure valve according to this embodiment after removing the upper cover.

[0017] Figure 3 It is a schematic structural diagram of the upper cover according to this embodiment.

[0018] Figure 4 It is a schematic structural diagram of the lower connecting body according to this embodiment.

[0019] Figure 5 It is a schematic structural diagram of three silicone sleeves according to this embodiment.

[0020] Figure 6 It is a schematic structural diagram of the support cover according to this embodiment.

[0021] Reference numerals: 1, valve body; 11, upper cover; 111, second groove; 112, through hole; 113, second annular groove; 114, cylindrical tube; 12, lower connecting body; 121, first groove; 122, first annular groove; 123, water inlet joint; 124, water outlet joint; 125, Venturi tube; 126, support ring; 2, silicone sleeve; 21, sealing strip; 22, silicone plug; 221, support disc; 3, pressure rod; 4, spring; 5, support cover; 6, force-saving lever. Detailed implementation manners

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0023] Refer to Figures 1-5, a Venturi water pressure valve, comprising a valve body 1, a silica gel sleeve 2 and a pressure rod 3. The valve body 1 includes an upper cover 11 and a lower connecting body 12. The top surface of the lower connecting body 12 is recessed with a first groove 121, and the bottom surface of the upper cover 11 is recessed with a second groove 111. The top surface of the upper cover 11 is provided with through holes 112. The number of the through holes 112 is three and they are evenly arranged along the length direction of the upper cover 11 and communicate with the second groove 111. The number of the silica gel sleeves 2 is three. The three silica gel sleeves 2 are integrally injection-molded and arranged in a straight line. The two side walls of the silica gel sleeve 2 in the middle are respectively connected to the other two silica gel sleeves 2 on its two sides. Sealing strips 21 are arranged on the outer walls of the three silica gel sleeves 2, and the sealing strips 21 on the outer walls of the three silica gel sleeves 2 are connected to form a sealing ring. Raised portions surrounding itself are convexly provided on both the upper and lower sides of the sealing ring. The bottoms of the three silica gel sleeves 2 are all formed with flat silica gel plugs 22 to seal the bottom ends of their inner holes, and there is a spacing between the side wall of each silica gel sleeve 2 and the peripheral wall of the silica gel plug 22 at its bottom end. The top surface of the lower connecting body 12 is recessed with a first annular groove 122 surrounding the first groove 121, and the bottom surface of the upper cover 11 is recessed with a second annular groove 113 surrounding the second groove 111. The first annular groove 122 matches the raised portion on the lower side of the support ring 126, and the second annular groove 113 matches the raised portion on the upper side of the support ring 126. The integrally formed three silica gel sleeves 2 are placed into the first groove 121 of the lower connecting body 12, and the raised portion on the lower side of the support ring 126 is snapped into the first annular groove 122. The upper cover 11 is covered on the top end of the lower connecting body 12 and the raised portion on the upper side of the support ring 126 is snapped into the second annular groove 113. The upper cover 11 and the lower connecting body 12 are fixed by bolt locking. The first groove 121 and the second groove 111 jointly form a water storage cavity for storing water. Each of the three through holes 112 on the upper cover 11 has a corresponding silica gel sleeve 2. The three silica gel sleeves 2 are fixed by clamping the support ring 126 by the upper cover 11 and the lower connecting body 12, and the three silica gel sleeves 2 seal the three through holes 112, so that the water in the water storage cavity cannot flow out from the through holes 112. An inlet joint 123 and an outlet joint 124 communicating with the water storage cavity are respectively arranged on both sides of the lower connecting body 12. The inlet joint 123 is used for connecting with an external water supply device to supply water to the water storage cavity by the external water supply device. The outlet joint 124 is used for connecting with an external water using device. Three vertical Venturi tubes 125 are arranged at the bottom of the lower connecting body 12. The three Venturi tubes 125 are arranged along the length direction of the lower connecting cylinder, and the water inlet ports of the three Venturi tubes 125 are all communicated with the water storage cavity, and each of the water inlet ports of the three Venturi tubes 125 has a corresponding through hole 112. Three support rings 126 are convexly provided on the bottom surface of the first groove 121 of the lower connecting body 12. The water inlet port of each Venturi tube 125 is surrounded by a support ring 126. The bottom surface of each support ring 126 contacts the bottom surface of a silica gel plug 22, and the silica gel plug 22 seals the inside of the support ring 126. There is water in the water storage cavity. The water space in the water storage cavity with water is a high-pressure area.The interior of the support ring 126 is a water passage space serving as a low-pressure area. Through the action of water pressure on the upper surface of the silica gel plug 22, there is a pressure difference between the upper and lower surfaces of the silica gel plug 22. The greater the water pressure in the high-pressure area, the greater the downward pressure on the upper surface of the silica gel plug 22, and the stronger the contact force between the bottom surface of the silica gel plug 22 and the top surface of the support ring 126, making the sealing effect of the silica gel plug 22 on the interior of the support ring 126 better. By sealing the interior of the support ring 126, the water in the water storage cavity cannot flow into the venturi tube 125.,

[0024] Refer to Figure 1 and Figure 2 As shown, the number of the pressure rods 3 is three. The three pressure rods 3 are respectively placed in the three silica gel sleeves 2. One end of the pressure rod 3 is fixedly connected to the silica gel plug 22, and the other end of the pressure rod 3 extends out of the valve body 1 through the through hole 112. By pulling the pressure rod 3 outwards, the silica gel plug 22 is separated from the support ring 126 to allow water to flow into the venturi tube 125. The pulling force on the pressure rod 3 only needs to overcome the water pressure, and the required pressure is small and convenient. By pressing down the pressure rod 3, the silica gel plug 22 comes into contact with the support ring 126 again, causing the silica gel plug 22 to seal the interior of the support ring 126 again, preventing water from flowing into the venturi tube 125.,

[0025] Refer to Figure 2 As shown, a support disc 221 is embedded in each silica gel plug 22. The support disc 221 is made of hard metal, and the diameter of the support disc 221 is larger than the inner diameter of the support ring 126. The silica gel plug 22 is flexible and is easily deformed under high pressure. With the support of the support disc 221, the silica gel plug 22 has better stability.,

[0026] Refer to Figure 2 、 Figure 3 and Figure 6, a venturi water pressure valve, further comprising a spring 4, a support cover 5, and a labor-saving lever 6. The number of support covers 5 is three, and they are all barrel-shaped with an open top and a perforation provided at the bottom surface. A support cover 5 is erected in each silicone sleeve 2. The top end of the support cover 5 is fixedly connected to the upper cover 11 and aligned with the through hole 112. The upper cover 11 is provided with a cylindrical barrel 114 at each through hole 112. The cylindrical barrel 114 penetrates into the support cover 5. There is a gap between the inner wall of the support cover 5 and the outer wall of the cylindrical barrel 114, and there is also a gap between the bottom surface of the support cover 5 and the bottom surface of the cylindrical barrel 114. The spring 4 is sleeved between the cylindrical barrel 114 and the inner wall of the support cover 5 to be limited, reducing the left and right swing of the spring 4. The pressure rod 3 penetrates into the interior of the support cover 5 through the perforation and is inside the spring 4 and the cylindrical barrel 114. The outer wall of the pressure rod 3 contacts the inner wall of the perforation. The pressure rod 3 is limited by the perforation to make the movement of the pressure rod 3 stable and not easily deviate, so that the silicone plug 22 can accurately contact the support ring 126 when returning after leaving the support ring 126. And an abutting ring is provided on the outer wall of the part of the pressure rod 3 between the bottom surface of the support cover 5 and the bottom surface of the cylindrical barrel 114. The top end of the spring 4 abuts against the top wall of the water storage cavity, and the other end of the spring 4 abuts against the abutting ring. When the silicone plug 22 contacts the support ring 126, the spring 4 is in a relaxed state. When the pressure rod 3 is pulled up, the spring 4 is compressed. The spring 4 is used to assist the pressure rod 3 to return to its position, making the return of the pressure rod 3 easier. A small elastic force spring 4 can be selected for the spring 4.

[0027] Referring to Figure 1 , the number of labor-saving levers 6 is three corresponding to the three pressure rods 3. The labor-saving levers 6 are arranged at the top end of the upper cover 11, and the load-bearing arms of the labor-saving levers 6 are hinged to the pressure rods 3. The pressure rods 3 are lifted and lowered by prying with the labor-saving levers 6, which is more labor-saving and convenient.

[0028] Although the embodiments of the present application have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A venturi water pressure valve, characterized in that: It includes a valve body. A water storage cavity is arranged inside the valve body, and a water inlet joint communicating with the water storage cavity is arranged on one side thereof. A vertical venturi tube is arranged at the bottom of the valve body. The water inlet port of the venturi tube communicates with the water storage cavity. A through hole communicating with the water storage cavity is arranged at the top end of the valve body. A support ring surrounding the water inlet port of the venturi tube is convexly provided on the bottom wall of the water storage cavity of the valve body. It further includes a silica gel sleeve and a pressure rod. A flat silica gel plug is formed at the bottom of the silica gel sleeve to seal the bottom end of its inner hole. The silica gel sleeve stands upright inside the water storage cavity and is connected to the inner side wall of the water storage cavity to seal the through hole. There is a gap between the side wall of the silica gel sleeve and the peripheral wall of the silica gel plug. The bottom surface of the silica gel plug contacts and seals the inside of the support ring with the top surface of the support ring. The pressure rod is inside the silica gel sleeve, one end of which is fixedly connected to the silica gel plug, and the other end extends out of the valve body through the through hole.

2. The venturi water pressure valve according to claim 1, characterized in that: A support disc is embedded inside the silica gel plug. The support disc is made of hard metal, and the diameter of the support disc is larger than the inner diameter of the support ring.

3. The venturi water pressure valve according to claim 1, characterized in that: It further includes a spring and a support cover. The support cover is in a barrel shape, with a perforation provided at the bottom of its top opening. The support cover stands upright inside the silica gel sleeve, and its top end is connected and fixed to the valve body and is aligned with the through hole. The pressure rod passes through the perforation into the inside of the support cover, and the outer wall of the pressure rod contacts the inner wall of the perforation. And an abutting ring is arranged on the outer wall of the part of the pressure rod inside the support cover. The spring is installed inside the support cover and sleeved on the pressure rod. One end of the spring abuts against the top wall of the water storage cavity, and the other end of the spring abuts against the abutting ring. When the silica gel plug contacts the support ring, the spring is in a relaxed state.

4. The venturi water pressure valve according to claim 3, wherein: It further includes a labor-saving lever. The labor-saving lever is arranged at the top of the valve body, and the load-bearing arm of the labor-saving lever is hinged to the pressure rod to lift the pressure rod by prying the labor-saving lever.

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