Distribution valve and distribution valve group

Abstract

The utility model discloses a distribution valve and a distribution valve group, the distribution valve comprises a valve body, the outer side of the top of the valve body is provided with a liquid inlet, the outer side of the bottom of the valve body is provided with a liquid outlet, the valve body is internally provided with a blocking plug, the blocking plug is provided with a communicating hole, and the valve body is internally provided with a main blocking piece, a sub-blocking piece and an elastic assembly; the driving piece is in driving connection with an ejector rod, the driving piece can drive the ejector rod to move up and down, the ejector rod penetrates into the valve body from the bottom end of the valve body, a main bearing section and a sub-bearing section are formed at the top of the ejector rod, a main liquid outlet gap is formed between the main bearing section and the inner wall of the communicating hole, and the top end of the sub-bearing section abuts against the sub-plugging piece; according to the distribution valve disclosed by the utility model, graded plugging is carried out through the main plugging piece and the sub-plugging pieces, so that the driving force required when fluid is conducted can be reduced, the phenomena of clamping stagnation and blockage during working are effectively reduced, and the working stability of the distribution valve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve, especially relates to a distribution valve and distribution valve group. BACKGROUND

[0002] In fluid delivery, the distribution valve can play an important role, through the on-off inside the distribution valve, the fluid flow to the corresponding pipeline can be accurately controlled. The plugging structure for on-off of fluid is arranged in the distribution valve, when the plugging structure needs to be opened to conduct fluid, since the fluid itself will generate a large pressure on the plugging structure, a large driving force needs to be provided to open the plugging structure, especially for long-distance fluid delivery, at this time, a larger driving force needs to be provided, when the driving force provided inside the distribution valve is insufficient, the distribution valve is prone to problems such as jamming and plugging. Therefore, a distribution valve with more stable operation is urgently needed. SUMMARY

[0003] The utility model aims at providing a distribution valve and distribution valve group to solve one or more technical problems existing in the prior art, at least to provide a beneficial choice or create conditions.

[0004] The solution to the technical problem of the utility model is as follows:

[0005] A distribution valve comprises: a valve body, a liquid inlet is arranged on the top outer side of the valve body and communicated with the inside of the valve body, a liquid outlet is arranged on the bottom outer side of the valve body and communicated with the inside of the valve body, a blocking plug is arranged inside the valve body at a position between the liquid outlet and the liquid inlet, a communication hole is arranged on the blocking plug, a main plugging member, a sub-plugging member and an elastic assembly are sequentially arranged above the blocking plug inside the valve body, the volume of the main plugging member is larger than that of the sub-plugging member, a channel communicated with the communication hole is arranged in the main plugging member, the elastic assembly downwardly abuts against the sub-plugging member, and the sub-plugging member is plugged at the top end of the channel and the main plugging member is plugged at the top end of the communication hole; a driving member is drivingly connected with a top rod, the driving member can drive the top rod to move up and down, the top rod penetrates into the valve body from the bottom end of the valve body, the top of the top rod is formed with a main supporting section extending into the communication hole and a sub-supporting section extending into the channel, a main liquid outlet gap is formed between the main supporting section and the inner wall of the communication hole, the top end of the sub-supporting section abuts against the sub-plugging member, and a sub-liquid outlet gap is formed between the sub-supporting section and the inner wall of the channel.

[0006] The technical scheme has at least the following beneficial effects: the liquid inlet can be connected to a fluid input source of an external device, the liquid outlet can be connected to an external device structure requiring output of a supply fluid, fluid is input into the valve body from the liquid inlet, the sub-blocking piece is blocked at the top end of the channel due to the elastic pressure provided by the elastic assembly, and the pressure is transmitted to the main blocking piece through the sub-blocking piece, so that the main blocking piece also blocks the top end of the communication hole, at this time, the fluid is blocked above the blocking plug, that is, the liquid inlet and the liquid outlet are not in communication, when it is required to output fluid from the liquid outlet, the driving piece drives the top rod to move upward, abutting against the sub-bearing section of the sub-blocking piece drives the sub-blocking piece to move upward, first opening the channel, at this time, the fluid enters the sub-liquid outlet gap formed between the sub-bearing section and the inner wall of the channel, as the driving piece drives the top rod to continue to move upward, the main bearing section lifts the main blocking piece upward to open the communication hole, the fluid enters the main liquid outlet gap formed between the main bearing section and the inner wall of the communication hole, and flows into the bottom of the valve body, and can be discharged from the liquid outlet, in this process, due to the fact that the volume of the main blocking piece is greater than that of the sub-blocking piece, the pressure of the fluid acting on the main blocking piece is greater than that acting on the sub-blocking piece, the sub-bearing section needs a smaller force to lift the sub-blocking piece upward to open the channel, at this time, the fluid is in small flow communication, which can play a role in pressure relief of the fluid, reducing the pressure on the main blocking piece, the main bearing section also needs a smaller force to lift the main blocking piece upward to open the communication hole, realizing large flow communication of the fluid, when the driving piece drives the top rod to move downward, the pressure of the elastic assembly can re-press the sub-blocking piece and the main blocking piece downward to block them, thus, the blocking of the main blocking piece and the sub-blocking piece in stages can reduce the driving force required for fluid communication, thereby effectively reducing the occurrence of jamming and blocking during work, and improving the working stability of the distribution valve.

[0007] As a further improvement of the above technical scheme, the valve body comprises a lower cylinder, an upper cylinder connected to the top of the lower cylinder, the liquid inlet is formed on the top outside of the upper cylinder, the liquid outlet is formed on the bottom outside of the lower cylinder, and the top rod penetrates into the bottom end of the lower cylinder. During production, the interiors of the upper cylinder and the lower cylinder can be machined respectively, and then the blocking plug, the main blocking piece, the sub-blocking piece and the elastic assembly are loaded into the upper cylinder and the lower cylinder, and finally the upper cylinder and the lower cylinder are connected to each other, so that the convenience of overall production and assembly can be improved.

[0008] As a further improvement of the above technical scheme, the elastic assembly comprises a spring and a pressure seat, the spring is arranged in the upper cylinder, the pressure seat abuts against the bottom end of the spring, the bottom side of the pressure seat is provided with a limiting groove, and the top of the sub-blocking piece abuts against the limiting groove. The spring provides elastic downward pressure to the sub-blocking piece through the pressure seat, and the limiting groove can limit the position of the sub-blocking piece, which can effectively prevent the sub-blocking piece from slipping relative to the pressure seat, and improve the stability of the elastic downward pressure of the spring transmitted to the sub-blocking piece.

[0009] As a further improvement of the above technical solution, the elastic assembly further comprises a bracket, an upper step is formed at a position below the liquid inlet on the inner side of the upper cylinder, the top side of the bracket abuts against the upper step, and the top end of the spring abuts against the bottom side of the bracket. The upper step can limit the position of the bracket, so that the bracket is quickly installed into the upper cylinder, and the top end of the spring is positioned by the bracket. When in use, the fluid enters the upper cylinder from the liquid inlet, passes through the bracket and enters the upper cylinder.

[0010] As a further improvement of the above technical solution, a lower step is arranged on the inner side of the lower cylinder, and the blocking plug abuts against the lower step. The lower step can quickly install the blocking plug in place in the lower cylinder, and limit the stroke of the blocking plug when in use, thereby ensuring the stability of the blocking plug in separating the space in the lower cylinder.

[0011] As a further improvement of the above technical solution, a sealing plug is arranged on the bottom side of the lower cylinder, and the top rod passes through the sealing plug. The sealing plug can seal the position where the top rod passes through the lower cylinder, effectively reducing the leakage of fluid from the position where the top rod passes through the lower cylinder.

[0012] As a further improvement of the above technical solution, the upper cylinder and the lower cylinder are detachably connected. When the whole assembly is used, the mutual disassembly between the upper cylinder and the lower cylinder can facilitate the combination of the whole assembly with the structural members of the external device. After long-term use, the upper cylinder and the lower cylinder can be disassembled, thereby facilitating the replacement and maintenance of the internal structural members and improving the flexibility of the whole assembly.

[0013] As a further improvement of the above technical solution, the shape of the main blocking member and the shape of the sub-blocking member are both circular. The circular main blocking member and the circular sub-blocking member can better fit the communication hole and the channel when blocking them, thereby improving the blocking effect of the communication hole and the channel.

[0014] As a further improvement of the above technical solution, the valve body is provided with a liquid outlet connector at the position of the liquid outlet. The liquid outlet connector can be conveniently connected to the pipeline and other structural members of the external device, thereby further improving the convenience of the connection and combination of the whole assembly.

[0015] A distribution valve assembly comprises a liquid inlet pipe and the above-mentioned distribution valve. The number of the distribution valves is multiple, the top of the multiple valve bodies is connected to the liquid inlet pipe, and the multiple liquid inlets are arranged in the liquid inlet pipe.

[0016] The technical scheme has at least the following beneficial effects: the liquid inlet pipe can be connected to a fluid input source of an external device, and the plurality of distribution valves are connected to external device structures requiring output of the supply fluid, when fluid is input to the external device from the liquid inlet pipe, the flow of the supply fluid output to different external device structures can be accurately controlled by controlling the conduction of the distribution valves, and when each distribution valve is controlled, the driving force required for fluid conduction can be reduced by the hierarchical blocking of the main blocking member and the sub-blocking member, thereby effectively reducing the sticking and blocking phenomenon during operation and improving the working stability of the distribution valve. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly described below. Obviously, the described drawings are only some of the embodiments of the present application, not all embodiments, and those skilled in the art can obtain other design schemes and drawings according to these drawings without creative labor.

[0018] Figure 1 is a front view of the distribution valve of the present application.

[0019] Figure 2 is Figure 1 A-A cross-sectional structure schematic view of.

[0020] Figure 3 is a three-dimensional view of the distribution valve group of the present application.

[0021] In the drawings: 100-valve body, 110-liquid inlet, 120-block plug, 121-communication hole, 130-main blocking member, 131-channel, 140-sub-blocking member, 150-lower cylinder, 151-lower step, 152-sealing plug, 160-upper cylinder, 161-upper step, 171-spring, 172-pressing seat, 173-bracket, 180-liquid outlet connector, 200-driving member, 210-top rod, 211-main supporting section, 212-sub-supporting section, 300-liquid inlet pipe. DETAILED DESCRIPTION

[0022] The concept, specific structure and generated technical effects of the present application will be clearly and completely described in combination with the embodiments and drawings, so as to fully understand the purposes, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments, based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. In addition, all the connection relationships mentioned in the text do not mean that the components are directly connected, but that a better connection structure can be composed by adding or reducing connecting auxiliary parts according to the specific implementation situation. The technical features in the present application can be combined interactively without mutual contradiction and conflict.

[0023] Referring to Figure 1 With Figure 2 A distribution valve, comprising: a valve body 100, the top outside is provided with a liquid inlet 110 communicated with the inside, the bottom outside of the valve body 100 is provided with a liquid outlet communicated with the inside, the inside of the valve body 100 is provided with a blocking plug 120 between the liquid outlet and the liquid inlet 110, the blocking plug 120 is provided with a communication hole 121, the inside of the valve body 100 is provided with a main sealing member 130, a sub sealing member 140 and an elastic assembly in sequence above the blocking plug 120, the volume of the main sealing member 130 is greater than the volume of the sub sealing member 140, the main sealing member 130 is provided with a channel 131 communicated with the communication hole 121, the elastic assembly is downwardly pressed on the sub sealing member 140, and the sub sealing member 140 is sealed at the top end of the channel 131, and the main sealing member 130 is sealed at the top end of the communication hole 121; a driving member 200 is drivingly connected with a top rod 210, the driving member 200 can drive the top rod 210 to move up and down, the top rod 210 penetrates into the valve body 100 from the bottom end of the valve body 100, the top of the top rod 210 is formed with a main supporting section 211 extending into the communication hole 121 and a sub supporting section 212 extending into the channel 131, a main liquid outlet gap is formed between the main supporting section 211 and the inner wall of the communication hole 121, the top end of the sub supporting section 212 abuts against the sub sealing member 140, and a sub liquid outlet gap is formed between the sub supporting section 212 and the inner wall of the channel 131.

[0024] In the distribution valve, the inlet 110 can be connected to the fluid input source of the external device, and the outlet can be connected to the external device structure requiring output of the supply fluid. The fluid is input into the valve body 100 from the inlet 110. The sub-blocking member 140 is blocked at the top end of the channel 131 due to the elastic pressure provided by the elastic assembly, and the pressure is transmitted to the main blocking member 130 through the sub-blocking member 140, so that the main blocking member 130 also blocks the top end of the communication hole 121. At this time, the fluid is blocked above the blocking plug 120, that is, the inlet 110 and the outlet are not in communication. When it is required to output the fluid from the outlet to the outside, the driving member 200 drives the top rod 210 to move upward, and the sub-bearing section 212 of the sub-blocking member 140 is driven to move upward, thereby opening the channel 131. At this time, the fluid enters the sub-outlet gap formed between the sub-bearing section 212 and the inner wall of the channel 131. As the driving member 200 continues to drive the top rod 210 to move upward, the main bearing section 211 lifts the main blocking member 130 upward, thereby opening the communication hole 121. The fluid enters the main-outlet gap formed between the main bearing section 211 and the inner wall of the communication hole 121, and flows into the bottom of the valve body 100, and can be discharged from the outlet. In this process, since the volume of the main blocking member 130 is greater than that of the sub-blocking member 140, the pressure of the fluid acting on the main blocking member 130 is greater than that acting on the sub-blocking member 140. The sub-bearing section 212 needs a smaller force to lift the sub-blocking member 140 upward to open the through hole. At this time, the fluid is in small-flow communication, which can play a role in pressure relief of the fluid, thereby reducing the pressure on the main blocking member 130. The main bearing section 211 also needs a smaller force to lift the main blocking member 130 upward to open the communication hole 121, thereby realizing large-flow communication of the fluid. When the driving member 200 drives the top rod 210 to move downward, the pressure of the elastic assembly can re-press the sub-blocking member 140 and the main blocking member 130 downward to block them. Thus, the driving force required for fluid communication can be reduced by the hierarchical blocking of the main blocking member 130 and the sub-blocking member 140, thereby effectively reducing the jamming and blocking phenomenon during work, and improving the working stability of the distribution valve.

[0025] The driving member 200 is mainly used to provide driving force for the upward and downward movement of the top rod 210. Its structure forms have various forms, such as a pneumatic cylinder, an electric screw or a hydraulic cylinder. The driving member 200 and the valve body 100 can be installed on the structure of the external device to keep the relative fixation of the two, or the valve body 100 can be directly installed on the shell of the driving member 200, so that the two form an integral whole.

[0026] The valve body 100 can be provided with a cover only at one end position, and after the blocking plug 120, the main blocking piece 130, the sub-blocking piece 140 and the elastic assembly are assembled into the valve body 100, the cover is connected to the end of the valve body 100. In order to facilitate the molding of the internal structure of the valve body 100, the valve body 100 includes a lower cylinder 150 and an upper cylinder 160 connected to the top of the lower cylinder 150. The liquid inlet 110 is formed on the top outside of the upper cylinder 160, the liquid outlet is formed on the bottom outside of the lower cylinder 150, and the top rod 210 penetrates the bottom end of the lower cylinder 150. During production, the interiors of the upper cylinder 160 and the lower cylinder 150 can be processed respectively, and then the blocking plug 120, the main blocking piece 130, the sub-blocking piece 140 and the elastic assembly are assembled into the upper cylinder 160 and the lower cylinder 150. Finally, the upper cylinder 160 and the lower cylinder 150 are connected to each other, so that the convenience of overall production and assembly is improved.

[0027] The elastic assembly is mainly used to provide elastic downward pressure to the sub-blocking piece 140, which can be an elastic structure such as rubber, torsional spring or elastic sheet. In this embodiment, the elastic assembly includes a spring 171 and a pressing seat 172. The spring 171 is arranged in the upper cylinder 160, and the pressing seat 172 abuts against the bottom end of the spring 171. The bottom side of the pressing seat 172 is provided with a limiting groove, and the top of the sub-blocking piece 140 abuts against the limiting groove. The spring 171 provides elastic downward pressure to the sub-blocking piece 140 through the pressing seat 172. Since the limiting groove can limit the position of the sub-blocking piece 140, it can effectively prevent the sub-blocking piece 140 from slipping relative to the pressing seat 172, and improve the stability of the spring 171 in transmitting elastic downward pressure to the sub-blocking piece 140.

[0028] The spring 171 can directly abut against the inner top side of the upper cylinder 160. In this embodiment, the elastic assembly further includes a bracket 173. The inner side of the upper cylinder 160 is formed with an upper step 161 below the liquid inlet 110, and the top side of the bracket 173 abuts against the upper step 161. The top end of the spring 171 abuts against the bottom side of the bracket 173. The upper step 161 can limit the position of the bracket 173, so that the bracket 173 is quickly installed in the interior of the upper cylinder 160. The top end of the spring 171 abuts against the bottom side of the bracket 173, and the bracket 173 quickly positions the spring 171. During use, fluid enters the upper cylinder 160 from the liquid inlet 110, passes through the bracket 173 and enters the upper cylinder 160.

[0029] Further, the lower cylinder 150 is internally provided with a lower step 151, and the blocking plug 120 abuts against the lower step 151. The lower step 151 can facilitate the quick installation of the blocking plug 120 in the lower cylinder 150, and can limit the stroke of the downward movement of the blocking plug 120 during use, thereby ensuring the stability of the blocking plug 120 in separating the internal space of the lower cylinder 150.

[0030] During use, the top rod 210 needs to move back and forth relative to the lower cylinder 150, and at this time, fluid is prone to leak out from the position where the top rod 210 penetrates the lower cylinder 150. Therefore, in the embodiment, the lower cylinder 150 is internally provided with a sealing plug 152, and the top rod 210 penetrates the sealing plug 152. The sealing plug 152 can seal the position where the top rod 210 penetrates the lower cylinder 150, thereby effectively reducing the leakage of fluid from the position.

[0031] In some embodiments, the upper cylinder 160 and the lower cylinder 150 are detachably connected, for example, the bottom of the upper cylinder 160 can be threadedly connected to the top of the lower cylinder 150. During the use of the overall assembly, the mutual disassembly between the upper cylinder 160 and the lower cylinder 150 can facilitate the combination of the overall assembly with the structural members of the external device, and after a long period of use, the upper cylinder 160 and the lower cylinder 150 can be disassembled, thereby facilitating the replacement and maintenance of the internal structural members, and improving the flexibility of the overall use.

[0032] The surface of the main blocking member 130 that closes the communication hole 121 can be a flat surface, and similarly, the surface of the sub-blocking member 140 that closes the passage 131 can be a flat surface. In the embodiment, the shape of the main blocking member 130 and the shape of the sub-blocking member 140 are both circular. The circular main blocking member 130 and the sub-blocking member 140 can be more closely fitted when closing the communication hole 121 and the passage 131, thereby improving the closing effect of the communication hole 121 and the passage 131.

[0033] In some embodiments, the position of the valve body 100 at the liquid outlet is provided with a liquid outlet connector 180. The liquid outlet connector 180 can facilitate the connection to the pipeline and other structural members of the external device, thereby further improving the convenience of the overall connection and combination.

[0034] As shown in Figure 3 A distribution valve group, which includes a liquid inlet pipe 300 and the above-mentioned distribution valves, the number of the distribution valves is multiple, the top of the multiple valve bodies 100 is connected to the liquid inlet pipe 300, and the multiple liquid inlets 110 are located in the liquid inlet pipe 300.

[0035] In the distribution valve group, the liquid inlet pipe 300 can be connected to the fluid input source of the external device, and the plurality of distribution valves are connected to the external device structures requiring the output of the supply fluid. When the fluid of the external device is input from the liquid inlet pipe 300, the flow of the supply fluid output to different external device structures can be accurately controlled by controlling the conduction of the distribution valves. When each distribution valve is controlled, the driving force required for the fluid conduction can be reduced by the hierarchical blocking of the main blocking member 130 and the sub-blocking member 140, thereby effectively reducing the sticking and blocking phenomenon during operation and improving the working stability of the distribution valve.

[0036] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A dispensing valve characterized by: The utility model provides a valve body (100) is provided with the liquid inlet (110) on the top outside, and the liquid outlet is provided with on the bottom outside, and the blocking plug (120) is arranged in the valve body (100) between the liquid outlet and the liquid inlet (110), and the communication hole (121) is arranged on the blocking plug (120), and the main plugging piece (130), the sub plugging piece (140) and the elastic assembly are sequentially arranged in the valve body (100) above the blocking plug (120), the volume of the main plugging piece (130) is greater than the volume of the sub plugging piece (140), the channel (131) is arranged in the main plugging piece (130) and is communicated with the communication hole (121), and the elastic assembly is downwardly pressed on the sub plugging piece (140) and makes the sub plugging piece (140) block the top end of the channel (131) and the main plugging piece (130) block the top end of the communication hole (121). The utility model provides a drive piece (200) is drivenly connected with the top rod (210), the drive piece (200) can drive the top rod (210) to move up and down, the top rod (210) is from the bottom end of the valve body (100) and enters the valve body (100) in, and the top of the top rod (210) forms the main bearing section (211) that extends into the communication hole (121) and the sub bearing section (212) that extends into the channel (131), and the main liquid outlet gap is formed between the main bearing section (211) and the inner wall of the communication hole (121), and the top end of the sub bearing section (212) is abutted on the sub plugging piece (140), and the sub liquid outlet gap is formed between the sub bearing section (212) and the inner wall of the channel (131). The valve body (100) includes a lower cylinder (150) and an upper cylinder (160) connected to the top of the lower cylinder (150), the liquid inlet (110) is formed on the top outside of the upper cylinder (160), the liquid outlet is formed on the bottom outside of the lower cylinder (150), and the top rod (210) penetrates the bottom end of the lower cylinder (150).

2. A dispensing valve according to claim 1, wherein: The elastic assembly includes a spring (171) and a pressing seat (172), the spring (171) is arranged in the upper cylinder (160), the pressing seat (172) is abutted on the bottom end of the spring (171), the bottom side of the pressing seat (172) is provided with a limiting groove, and the top of the sub plugging piece (140) is abutted in the limiting groove.

3. A dispensing valve according to claim 2, wherein: The elastic assembly further includes a bracket (173), an upper step (161) is formed on the inner side of the upper cylinder (160) below the liquid inlet (110), the top side of the bracket (173) is abutted on the upper step (161), and the top end of the spring (171) is abutted on the bottom side of the bracket (173).

4. A dispensing valve according to claim 3, wherein: A lower step (151) is arranged on the inner side of the lower cylinder (150), and the blocking plug (120) is abutted on the lower step (151).

5. A dispensing valve according to claim 2, wherein: ​ 6. A dispensing valve according to claim 2, wherein: The lower cylinder (150) is provided with a sealing plug (152) on the inner bottom side, and the top rod (210) penetrates through the sealing plug (152).

7. A dispensing valve according to claim 2, wherein: The upper cylinder (160) is detachably connected with the lower cylinder (150).

8. A dispensing valve according to claim 1, wherein: The main blocking member (130) and the sub-blocking member (140) are both circular in shape.

9. A dispensing valve according to claim 1 wherein: The valve body (100) is provided with a liquid outlet connector (180) at the position of the liquid outlet.

10. A dispensing valve group characterized by: The distribution valve as claimed in any one of claims 1 to 9, wherein the number of the distribution valves is multiple, the top of the valve body (100) is connected to the liquid inlet pipe (300), and the liquid inlet (110) is located in the liquid inlet pipe (300).

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