Valve assembly and push-to-pass gate valve thereof

Abstract

The application discloses a valve assembly and a press type straight-through gate valve thereof, and relates to the technical field of straight-through valves.The press type straight-through gate valve comprises an upper shell, a lower shell, a gate piece, a spring, an elastic body and a straight-through pipe.The lower shell is assembled and connected with the upper shell to form a cavity.The gate piece is provided with a circular hole.The spring is arranged on the lower shell.The elastic body is provided with a through hole at one end.The straight-through pipe is symmetrically arranged on the two sides of the lower shell, and the other end of the elastic body is inserted into one end of the straight-through pipe.The other end of the straight-through pipe penetrates through the cavity and is connected with an outer pipe.The gate piece is arranged in the middle of the two elastic bodies.A button is inserted into the cavity through a containing groove.The lower shell is provided with a guide groove.The middle part of the button is clamped with the middle part of the gate piece.In an initial state, the upper shell presses the button and the gate piece and compresses the spring.The circular hole and the through hole are distributed in a staggered manner.When the button is pressed and driven to move downward and the spring is compressed, the circular hole gradually coincides with the through hole.When the gate piece moves downward to the lowermost position, the circular hole completely coincides with the through hole.The device has a compact structure, a better use effect and is convenient for an operator to hold and use with one hand.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of straight-through valve, more particularly to a press-type straight-through gate valve. BACKGROUND

[0002] At present, the water valve and the air valve applied on the medical devices (such as hand-held aspirator) on the market are mostly rotary valves. The valve body of the rotary valve is large in size, especially the thickness of the rotary valve is mostly thick, which is difficult to be applied on thin devices. Moreover, the rotary valve is controlled by rotating to open and close, which is difficult to be operated by one hand.

[0003] In the hand-held aspirator, the component for controlling the suction switch is usually a straight-through valve which is built in the device. The most comfortable way to hold the hand-held aspirator is similar to holding a pen. According to the ergonomics requirement, the device cannot be too thick and needs to be operated by one hand. Therefore, the size and control mode of the straight-through valve are the key to restrict the function of the product.

[0004] In the prior art, the common straight-through valve mostly includes the following two modes. In the first mode, a plastic part is pressed to control the opening and closing of the valve. However, in the process of frequently pressing the hose, the rebound performance is poor, which causes the valve to be not smooth in opening and closing. In the second mode, the press-type control is used to open and close, but the valve is large in size and can only be made into a gun type structure. The product is relatively large in size and cannot be held by one hand, which makes the operator not very comfortable when using the device.

[0005] In summary, how to provide a straight-through valve which is compact in structure, good in use effect and can be held for use is a problem to be solved by the technical personnel in the field at present. SUMMARY

[0006] Therefore, the purpose of the present application is to provide a press-type straight-through gate valve which is compact in structure, stable in use and can be held for use.

[0007] Another purpose of the present application is to provide a valve assembly comprising the press-type straight-through gate valve.

[0008] In order to achieve the above purpose, the present application provides the following technical scheme:

[0009] A press-type straight-through gate valve comprises:

[0010] an upper shell having a receiving groove formed at the top thereof;

[0011] a lower shell assembled with the upper shell to form a cavity;

[0012] a gate piece vertically arranged in the cavity and provided with a circular hole.

[0013] a spring, the lower shell is provided with two slotted cylinders for fixing one end of the spring, the other end of the two springs is respectively clamped with both sides of the shutter;

[0014] an elastic body, the middle of one end of the elastic body is provided with a through hole for selectively communicating with the round hole;

[0015] a straight-through pipe, which is symmetrically arranged on both sides of the lower shell, the other end of the elastic body is inserted into one end of the straight-through pipe, the other end of the straight-through pipe is connected with the outer pipe through the cavity, and the shutter is arranged between the two elastic bodies;

[0016] a key, which is inserted into the cavity through the accommodating groove, the lower shell is provided with a guide groove for limiting the movement track of the key, and the middle of the key is clamped with the middle of the shutter to drive the shutter to move downward;

[0017] In the initial state, the upper shell presses the key and the shutter, and compresses the spring, and the round hole is distributed out of position with the through hole; when the key is pressed downward to drive the shutter to move downward and compress the spring, the round hole gradually coincides with the through hole; when the shutter moves to the lowermost position, the round hole completely coincides with the through hole.

[0018] In one embodiment, the elastic body and the straight-through pipe are sealingly connected.

[0019] In one embodiment, the other end of the elastic body is provided with an annular dovetail structure, one end of the straight-through pipe is provided with an annular dovetail groove, and the annular dovetail groove is clamped and fixed with the annular dovetail structure.

[0020] In one embodiment, the other end of the straight-through pipe is provided with a circular ring structure, and the circular ring structure is used for connecting with the outer pipe.

[0021] In one embodiment, the sidewalls at both ends of the upper shell are each provided with a first semicircular notch, the sidewalls at both ends of the lower shell are each provided with a second semicircular notch, the first semicircular notch and the second semicircular notch cooperatively form a circular notch, and the circular ring structure is used for clamping and fixing with the circular notch.

[0022] In one embodiment, the straight-through pipe is provided with a square flange, the upper shell is provided with two symmetrically distributed first grooves, the lower shell is provided with two symmetrically distributed second grooves, the bottom of the square flange is clamped and fixed with the second groove, and the top of the square flange is clamped and fixed with the first groove.

[0023] In one embodiment, the two sides of the gate piece are provided with cantilevers, the spring sleeve is arranged on the cantilevers, a square middle protrusion is arranged between the two cantilevers, and the lower side of the middle protrusion is provided with the circular hole; the middle part of the button is provided with a middle groove which is clamped with the middle protrusion.

[0024] In one embodiment, the top of the button is an oval shell, the accommodating groove is an oval hole groove, and the oval hole groove is arranged at an angle of 45° with the upper shell.

[0025] In one embodiment, the middle part of the inside of the oval shell is provided with the middle groove, the bottom of the oval shell is provided with a contact flange around the periphery, and the two diagonally distributed contact flanges are provided with long strip-shaped guide protrusions; the lower shell is provided with two diagonally distributed guide grooves, and the guide protrusions move up and down along the guide grooves.

[0026] A valve assembly comprising the push type straight-through gate valve.

[0027] In use of the push type straight-through gate valve, first, the spring is inserted into the slotted cylinder, then the two sides of the gate piece are clamped with the two springs respectively, then the other end of the elastic body is inserted into one end of the straight-through pipe, and the two straight-through pipes are symmetrically arranged on the two sides of the lower shell, then the two elastic bodies are abutted with the two sides of the gate piece respectively, then the button is clamped with the guide groove to limit the moving track of the button, and the middle part of the button is clamped with the middle part of the gate piece to drive the gate piece to move downward, finally, the upper shell and the lower shell are assembled and connected, and the accommodating groove of the upper shell through which the button passes is inserted into the cavity when the upper shell is installed, so as to complete the assembly process of the device.

[0028] After the upper shell and the lower shell are assembled, the elastic body is compressed and deformed, the two elastic bodies can clamp the gate piece, and the upper shell can press the button to transmit the force to the gate piece, the two sides of the gate piece are clamped with the two springs respectively to transmit the force to the spring 7, that is, one end of the spring is constrained by the lower shell, and the other end of the spring is constrained by the gate piece. In the initial state, the circular hole and the through hole are distributed in a staggered manner, so that the two straight-through pipes and the gate piece are not connected, which is equivalent to the closed state of the valve (that is, the straight-through valve). When the valve needs to be opened, the operator only needs to press the button downward to drive the gate piece to move downward and compress the spring to store potential energy, at this time, the circular hole gradually coincides with the through hole, which is equivalent to gradually opening the opening degree of the valve, so that the two straight-through pipes and the gate piece are partially connected, and the medium gradually passes through the valve.

[0029] When the operator presses the key to the lowest position, the shutter moves to the lowest position, the circular hole is completely coincided with the through hole, which is equivalent to completely open the valve, at this time, the two straight pipes and the shutter are communicated with each other, and the medium is convenient to flow. When the force of the key disappears, the spring releases the potential energy and pushes the shutter upward, at this time, the coincidence degree of the circular hole of the shutter and the through hole of the elastic body gradually decreases, the valve is gradually closed, when the shutter moves to the uppermost position, the valve returns to the natural state, the circular hole and the through hole are completely dislocated, and the valve is completely closed, and the medium cannot flow.

[0030] The device integrates each component through the upper shell and the lower shell, so that the device structure is compact, can be manufactured into a small volume and thin structure, and can be applied to very small medical equipment. Moreover, in order to further reduce the device structure, the structure of the upper shell and the lower shell can be copied to the shell of the equipment, that is, the shell of the equipment is used to replace the upper shell and / or the lower shell of the present application, so that the overall thickness of the equipment can be made thinner. Moreover, the opening operation of the valve is realized by pressing the key downward, and the closing operation of the valve is realized by removing the pressing force and using the elastic force of the spring, so that the operator can operate with one hand and can realize the grip design. In addition, the shutter moves up and down to realize the opening and closing operation of the valve, and the shutter is not easy to deform and damage, and the use effect is relatively good compared with the hose.

[0031] In summary, the press type straight-through gate valve provided by the present application has a compact structure and relatively good use effect, and is convenient for the operator to hold and use with one hand.

[0032] In addition, the present application also provides a valve assembly comprising the above-mentioned press type straight-through gate valve. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can also obtain other drawings according to the provided drawings without creating any creative labor.

[0034] Figure 1 It is an exploded view of the press type straight-through gate valve provided by the present application;

[0035] Figure 2 It is a front view of the press type straight-through gate valve after assembly;

[0036] Figure 3 It is a side view of the press type straight-through gate valve after assembly;

[0037] Figure 4 It is a structural schematic view of the upper shell;

[0038] Figure 5 It is a structural schematic view of the lower shell;

[0039] Figure 6 is a structure diagram of the key;

[0040] Figure 7 is a structure diagram of the gate piece;

[0041] Figure 8 is a structure diagram of the elastic body;

[0042] Figure 9 is a front view of the elastic body;

[0043] Figure 10 is a structure diagram of the straight-through pipe;

[0044] Figure 11 is a front view of the straight-through pipe.

[0045] Reference signs:

[0046] 1 - upper shell; 101 - first groove; 102 - first semicircular notch; 103 - accommodating groove; 2 - lower shell; 201 - second groove; 202 - second semicircular notch; 203 - slotted cylinder; 204 - guide groove; 3 - key; 301 - middle groove; 302 - contact flange; 303 - guide protrusion; 4 - gate piece; 401 - round hole; 402 - cantilever; 403 - middle protrusion; 5 - elastic body; 501 - through hole; 502 - annular dovetail structure; 6 - straight-through pipe; 601 - annular dovetail groove; 603 - square flange; 7 - spring. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0048] The core of the present application is to provide a press-type straight-through gate valve, which is compact in structure, relatively good in use effect, and convenient for an operator to hold and use with one hand. Another core of the present application is to provide a valve assembly comprising the press-type straight-through gate valve.

[0049] Please refer to Figures 1 to 11 .

[0050] The specific embodiment provides a press-type straight-through gate valve, which comprises:

[0051] The upper shell 1 is provided with an accommodating groove 103 at the top;

[0052] The lower shell 2 is assembled and connected with the upper shell 1 to form a cavity;

[0053] a gate piece 4 vertically arranged in the cavity, the gate piece 4 being provided with a circular hole 401;

[0054] two springs 7, the lower shell 2 being provided with two slotted cylinders 203 for fixing one end of the springs 7, the other ends of the two springs 7 being respectively clamped with two sides of the gate piece 4;

[0055] an elastic body 5, a middle part of one end of the elastic body 5 being provided with a through hole 501 in selective communication with the circular hole 401;

[0056] a straight-through pipe 6, the straight-through pipe 6 being symmetrically arranged at two sides of the lower shell 2, the other end of the elastic body 5 being inserted into one end of the straight-through pipe 6, the other end of the straight-through pipe 6 being connected with the outer pipe through the cavity, and the gate piece 4 being arranged in the middle of the two elastic bodies 5;

[0057] a button 3, the button 3 being inserted into the cavity through a containing groove 103, the lower shell 2 being provided with a guide groove 204 for limiting the moving track of the button 3, and a middle part of the button 3 being clamped with a middle part of the gate piece 4 to drive the gate piece 4 to move downward;

[0058] In the initial state, the upper shell 1 presses the button 3 and the gate piece 4 and compresses the springs 7, and the circular hole 401 and the through hole 501 are distributed in dislocation; when the button 3 is pressed to drive the gate piece 4 to move downward and compress the springs 7, the circular hole 401 gradually coincides with the through hole 501; when the gate piece 4 moves to the lowermost position, the circular hole 401 completely coincides with the through hole 501.

[0059] It should be noted that the elastic body 5 will be deformed by horizontal force during assembly to horizontally clamp the gate piece 4, and a set of mutually dislocated holes are designed in the gate piece 4 and the elastic body 5 (that is, the diameter of the circular hole 401 and the diameter of the through hole 501 can remain the same, and the circular hole 401 and the through hole 501 are distributed in dislocation in the initial state), the elastic body 5 remains stationary after assembly, the gate piece 4 is driven to move up and down by the button 3 and the springs 7, the circular hole 401 and the through hole 501 are transformed between coincidence and dislocation, and then the on-off control of the valve is realized.

[0060] In actual application, the shape, structure, size, material and the like of the upper shell 1, the lower shell 2, the gate piece 4, the springs 7, the elastic body 5, the straight-through pipe 6 and the button 3 can be determined according to actual conditions and actual needs.

[0061] In use of the provided push-through gate valve, first, the spring 7 is inserted into the slotted cylinder 203, then the two sides of the gate piece 4 are respectively clamped with the two springs 7, after that, the other end of the elastic body 5 is inserted into one end of the straight-through pipe 6, and the two straight-through pipes 6 are symmetrically installed on the two sides of the lower shell 2, then the two elastic bodies 5 are respectively abutted with the two sides of the gate piece 4, then the button 3 is clamped with the guide slot 204 to limit the moving track of the button 3 through the guide slot 204, and the middle part of the button 3 is clamped with the middle part of the gate piece 4 to make the button 3 drive the gate piece 4 to move downward, finally, the upper shell 1 and the lower shell 2 are assembled and connected, and the accommodating slot 103 of the upper shell 1 through which the button passes is inserted into the cavity when the upper shell 1 is installed, to complete the assembly process of the device.

[0062] After the upper shell 1 and the lower shell 2 are assembled, the elastic body 5 is compressed and deformed, the two elastic bodies 5 can clamp the gate piece 4, and the upper shell 1 can press the button 3 to transmit the force to the gate piece 4, the two sides of the gate piece 4 are respectively clamped with the two springs 7 to transmit the force to the springs 7, that is, one end of the spring 7 is constrained by the lower shell 2, and the other end of the spring 7 is constrained by the gate piece 4. In the initial state, the round holes 401 are distributed in a staggered manner with the through holes 501, so that the two straight-through pipes 6 and the gate piece 4 are not connected, which is equivalent to the closed state of the valve (i.e. the straight-through valve). When the valve needs to be opened, the operator only needs to press the button 3 downward, the button 3 is pressed downward to drive the gate piece 4 to move downward and compress the spring 7 to store potential energy, at this time, the round holes 401 gradually coincide with the through holes 501, which is equivalent to gradually opening the opening degree of the valve, so that the two straight-through pipes 6 and the gate piece 4 are partially connected, and the medium gradually passes through the valve.

[0063] When the operator presses the button 3 to the lowest position, the gate piece 4 moves to the lowest position, the round holes 401 completely coincide with the through holes 501, which is equivalent to completely opening the valve, at this time, the two straight-through pipes 6 and the gate piece 4 are connected with each other, which is convenient for the medium to flow. When the force of the button 3 disappears, the spring 7 releases the potential energy to push the gate piece 4 upward, at this time, the coincidence degree of the round holes 401 of the gate piece 4 and the through holes 501 of the elastic body 5 gradually decreases, the valve gradually closes, when the gate piece 4 moves to the uppermost position, the valve returns to the natural state, the round holes 401 and the through holes 501 are completely staggered, the valve is completely closed, and the medium cannot flow.

[0064] The device integrates each component by the upper shell 1 and the lower shell 2, so that the device structure is compact, and the device is small in volume and thin in thickness, so that the device can be applied to small medical equipment. Moreover, in order to further reduce the device structure, the structure of the upper shell 1 and the lower shell 2 can be copied to the shell of the equipment, that is, the shell of the equipment is used to replace the upper shell 1 and / or the lower shell 2 of the application, so that the overall thickness of the equipment can be made thinner. Moreover, the opening operation of the valve is realized by pressing the button 3 downward, and the closing operation of the valve is realized by removing the pressing force and using the elastic force of the spring 7, so that the operator can operate with one hand and realize the grip design. In addition, the opening and closing operation of the valve is realized by the up and down movement of the shutter 4, the shutter 4 is not easy to deform and damage, and the use effect is relatively good compared with the hose.

[0065] In summary, the press type straight-through gate valve provided by the application has a compact structure, a relatively good use effect, and is convenient for an operator to hold and use with one hand.

[0066] In one embodiment, the elastomer 5 and the straight-through pipe 6 are sealingly connected, so as to avoid leakage of the medium at the connection between the elastomer 5 and the straight-through pipe 6 during the opening of the valve and the flow of the medium.

[0067] In one embodiment, as shown in Figure 8 and Figure 9 Another end of the elastomer 5 is provided with an annular dovetail structure 502, one end of the straight-through pipe 6 is provided with an annular dovetail groove 601, the annular dovetail groove 601 is clamped and fixed with the annular dovetail structure 502, so as to realize the fixed and sealing connection of the elastomer 5 and the straight-through pipe 6.

[0068] In one embodiment, the other end of the straight-through pipe 6 is provided with a circular ring structure 602, the circular ring structure 602 is used to connect with the outer pipe, that is, the circular ring structure 602 can pass through both sides of the cavity, so as to connect the outer pipe with the circular ring structure 602, and realize the communication assembly of the valve and other components.

[0069] In one embodiment, the two end side walls of the upper shell 1 are each provided with a first semicircular notch 102, the two end side walls of the lower shell 2 are each provided with a second semicircular notch 202, the first semicircular notch 102 and the second semicircular notch 202 cooperatively form a circular notch, and the circular ring structure 602 is used to clamp and fix with the circular notch, so as to firmly fix the straight-through pipe 6 in the shell formed by the upper shell 1 and the lower shell 2.

[0070] In one embodiment, the straight-through pipe 6 is provided with a square flange 603, the upper shell 1 is provided with two symmetrically distributed first recesses 101, the lower shell 2 is provided with two symmetrically distributed second recesses 201, the bottom of the square flange 603 is clamped and fixed with the second recess 201, and the top of the square flange 603 is clamped and fixed with the first recess 101.

[0071] It should be noted that a square flange 603 can be designed in the middle of the straight-through pipe 6, the inside of the upper shell 1 is provided with a first recess 101 at two corresponding positions, and the inside of the lower shell 2 is provided with a second recess 201 at two corresponding positions, the first recess 101 and the second recess 201 are aligned and distributed to be respectively clamped and fixed with the top and bottom of the square flange 603. The entire valve is symmetrically provided with two elastic bodies 5 and two straight-through pipes 6, the flange 603 on the straight-through pipe 6 is matched with the first recess 101 and the second recess 201 at the top and bottom respectively, the elastic body 5 is arranged in the middle of the straight-through pipe 6, the shutter 4 is arranged in the middle of the two elastic bodies 5, and the center axis of the straight-through valve 6 and the elastic body 5 is kept in line, so that it is convenient for processing and manufacturing parts, and it is also convenient for assembling and positioning each part.

[0072] In one embodiment, as shown in Figure 1 、 Figure 6 and Figure 7 , the two sides of the shutter 4 are provided with cantilever arms 402, the spring 7 is sleeved on the cantilever arm 402, the square middle protrusion 403 is arranged in the middle of the two cantilever arms 402, and the circular hole 401 is arranged below the middle protrusion 403; the middle of the key 3 is provided with a middle recess 301 matched with the middle protrusion 403. Therefore, the key 3 can drive the shutter 4 to move downward, and the downward movement can compress the spring 7 to store potential energy, when the operator no longer presses the key 3, the spring 7 can move upward to drive the shutter 3 and the key 3 to reset.

[0073] In one embodiment, the top of the key 3 is an oval shell, the containing groove 103 is an oval hole groove, and the oval hole groove is arranged at an angle of 45° with the upper shell 1, which helps to make the device structure more compact and the shell thickness thinner. Of course, the containing groove 103 can also be arranged at an angle of 30°, 60° or 90° with the upper shell 1, but this will make the key 3 larger in size, the space required by the shell larger, and the overall structure of the device larger.

[0074] In one embodiment, the inside of the oval shell is provided with a middle recess 301, the bottom of the oval shell is provided with a contact flange 302 around the periphery, and the two diagonally distributed contact flanges 302 are provided with long strip-shaped guide protrusions 303; the lower shell 2 is provided with two diagonally distributed guide grooves 204, and the guide protrusions 303 move up and down along the guide grooves 204.

[0075] It should be noted that the middle part of the protrusion 403 of the shutter 4 is matched with the middle part of the recess 301 of the button 3, and the fixed connection of the shutter 4 and the button 3 is realized. The special position of the lower shell 2 is provided with two slotted cylinders 203, and the special position of the lower shell 2 is also provided with two guide grooves 204, and the guide protrusion 303 moves up and down along the guide groove 204. The button 3 is matched with the upper shell 1 through the accommodating groove 103 on the upper shell 1, and the long strip-shaped guide protrusion 303 of the button 3 is matched with the guide groove 204 of the lower shell 2, so that the up and down movement of the button 3 is guided. Two springs 7 are arranged in the cavity, which are respectively placed in the slotted cylinder 203 of the lower shell 2 and are sleeved on the cantilever 402 of the shutter 4, so as to realize the limiting of the spring 7.

[0076] It should be noted that the distance between the flange of the upper shell 1 (i.e. the height of the periphery of the upper shell 1) and the flange of the lower shell 2 (i.e. the height of the periphery of the lower shell 2) is specially designed, so that after the upper shell 1 and the lower shell 2 are assembled, the elastic body 5 can be compressed and deformed to clamp the shutter 4, and a pre-pressure is applied to the shutter 4. The pre-pressure has the effect of preventing misalignment and shaking, which is mainly realized by the cooperation of the shutter 4, the button 3 and the shell. Specifically, the rigid cooperation of the middle part of the protrusion 403 and the middle part of the recess 301 makes the shutter 4 and the button 3 connected to form an integrated structure, and the two will not move relatively. Moreover, the guide protrusion 303 on the button 3 cooperates with the guide groove 204 of the lower shell 2, and the oval shell of the button 3 cooperates with the accommodating groove 103 of the upper shell 1, so as to realize the stability of the up and down movement of the button 3.

[0077] In addition, it should be noted that the design of the upper shell 1 and the lower shell 2 is special, including the horizontal distance design and the vertical distance design of the shell, wherein the main purpose of the horizontal distance design is to realize the straight-through (i.e. the center axes of the straight-through pipe 6 and the elastic body 5 are aligned and distributed, and the two elastic bodies 5 clamp the shutter 4), so that the elastic body 5 and the shutter 4 are sealedly connected. The smaller the horizontal distance of the shell, the greater the compression of the elastic body 5, and theoretically the better the sealing between the elastic body 5 and the shutter 4 and between the elastic body 5 and the straight-through pipe 5. However, the horizontal distance of the shell cannot be infinitely reduced, and too small horizontal distance will increase the friction between the elastic body 5 and the shutter 4, and easily lead to the reduction of the service life of the elastic body 5, and even directly fail.

[0078] In addition, the main purpose of the vertical distance design of the shell is to realize the comfort of pressing the button 3 and the smoothness of the button 3. Of course, it is also to make the spring 7 have a certain pre-pressure, which is a means to realize the smoothness of the button 3. If the spring 7 has no pre-pressure, there is friction between the elastic body 5 and the shutter 4 during the rising process, the button 3 cannot be completely raised to the position, and the valve cannot be completely closed (i.e. the button 3 and the shutter 4 are raised to the initial state).

[0079] Further, the design of the lateral distance and the longitudinal distance is not independent, that is, in the overall implementation of the sealing performance (key performance of the valve on-off) and the operability of the valve, the calculation of the lateral distance and the longitudinal distance is involved. If the lateral distance is designed alone, the sealing of the gate plate 4 and the elastic body 5 is ensured, which will affect the friction on the gate plate 4, and further affect the smoothness of the up and down movement of the gate plate 4. The smaller the lateral distance is, the greater the compression deformation of the elastic body 5 is, and the greater the friction on the gate plate 4 is. If the gate plate 4 and the spring 7 are to be smoothly popped up, the pre-pressing force of the spring 7 needs to be increased (which includes two means, one is to select a larger spring 7, and the other is to increase the longitudinal pre-pressing distance, but both of the two means will cause adverse effects, among which, selecting a larger spring 7 will increase the width of the product, and increasing the longitudinal pre-pressing distance will increase the height of the product, no matter which means is used, it will lead to a larger product), at this time, the gate plate 4 and the spring 7 can be smoothly popped up, but the pressing force of the spring 3 will also be increased, which will affect the comfort of the pressing.

[0080] If the longitudinal distance is designed alone, the ideal effect is to select a smaller spring 7 to ensure that the spring 3 is smoothly popped up, and the smaller the pressing force of the spring 3 is, the better, which requires that the friction on the gate plate 4 is also reduced, so the lateral distance needs to be increased, but the lateral distance will affect the sealing performance of the valve when it is increased to a certain extent.

[0081] Therefore, it is necessary to find a balance point between the spring 7, the lateral distance, the longitudinal distance, and the hardness of the elastic body 5. For example, first, the type of the spring 7 can be selected, and the hardness parameter of the elastic body 5 is selected, then the lateral distance and the longitudinal distance are adjusted, and multiple test groups are tested for the pressing force and the smoothness of the spring 3, and finally, the optimal size data can be obtained by recording the test data of each group and analyzing the data.

[0082] In addition, it should be noted that, in order to further illustrate the use method of the pressing type straight-through gate valve provided by the present application, the following will be exemplified.

[0083] When the upper shell 1 and the lower shell 2 are assembled, the upper shell 1 presses the contact flange 302 of the spring 3, and transmits the force to the gate plate 4, the gate plate 4 transmits the force to the spring 7 through the cantilever 402, since one end of the spring 7 is constrained by the lower shell 2, and the other end of the spring 7 is constrained by the gate plate 4, and the installation height of the spring 7 is specially calculated, at this time, the spring 7 is in a semi-compressed state, and the gate plate 4 and the elastic body 5 are in a designed misaligned state. Since the spring 7 is compressed, the spring 7 always has an upward elastic force on the gate plate 4, and the gate plate 4 is in a clamped state of the elastic body 5 at this time, therefore, the gate plate 4 will not naturally fall.

[0084] When the key 3 is forced to move downward, the key 3 can drive the gate piece 4 to move downward, and the spring 7 is compressed to store potential energy. At the same time, the circular hole 401 on the gate piece 4 gradually coincides with the through hole 501 on the elastic body 5, and the straight-through valve gradually opens, and the medium gradually passes through; when the gate piece 4 moves to the lowermost position, the circular hole 401 on the gate piece 4 coincides with the through hole 501 on the elastic body 5, at this time the straight-through valve is completely opened; when the force of the key 3 disappears, the spring 7 releases the potential energy, and can push the gate piece 4 upward, at this time the coincidence degree of the circular hole 401 on the gate piece 4 and the through hole 501 on the elastic body 5 is reduced, and the straight-through valve is gradually closed; when the gate piece 4 moves to the uppermost position, at this time the straight-through valve returns to the natural state, the circular hole 401 and the through hole 501 are completely dislocated, and the straight-through valve is completely cut off.

[0085] Compared with the prior art straight-through valve, the device has the following advantages:

[0086] 1. The device has small volume and thin thickness (the overall thickness can be designed to be not more than 18mm), so that the device can be applied to very small medical equipment, and the upper shell 1 and the lower shell 2 can be copied to the shell of the equipment (that is, the shell of the equipment is used to replace the upper shell 1 and / or the lower shell 2), so that the overall thickness of the equipment is made thinner;

[0087] 2. The device adopts a pressing automatic rebound type design, and an operator can operate with one hand and can realize a holding type design;

[0088] 3. The device adopts the elastic body 5 and the gate piece 4 to cooperate to realize the opening and closing operation of the valve, so that the service life of the device is longer, and the fatigue resistance and aging resistance are stronger;

[0089] 4. The elastic body 5 of the device can elastically seal the gate piece 4 and the straight-through pipe 6, so that the sealing effect of the valve is better, and there is no risk of leakage.

[0090] In addition to the above-mentioned pressing straight-through gate valve, the present application also provides a valve assembly comprising the pressing straight-through gate valve disclosed in the above-mentioned embodiments, and the structures of other parts of the valve assembly refer to the prior art, which will not be described herein.

[0091] It should be noted that the first semicircular notch 102 and the second semicircular notch 202, the first recess 101 and the second recess 201 mentioned in the present application, wherein the first and the second are only to distinguish the different positions, and there is no sequence.

[0092] In addition, it should be noted that the "horizontal", "vertical", "up and down" and the like indicated by the present application are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of simplifying the description and facilitating understanding, and therefore cannot be understood as a limitation on the present application.

[0093] The various embodiments described in this specification are presented by way of example, and each embodiment describes a specific implementation of the present invention. The various embodiments can be combined with each other, and all combinations of the various embodiments are within the scope of the present invention. The description of each embodiment is intended to be illustrative of the present invention and not restrictive of its scope.

[0094] The valve assembly and the press-through straight-through gate valve provided by the present application are described in detail above. The principles and implementation manners of the present application are described by applying specific examples in this paper, and the above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that, for those skilled in the art, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A push-to-pass gate valve, characterized by, The utility model relates to a kind of water faucet, including: Upper shell (1), top is provided with accommodating groove (103); Lower shell (2), with the upper shell (1) assembly connection forms cavity; Flapper (4), vertically arranged in the cavity, the flapper (4) is provided with round hole (401); Spring (7), the lower shell (2) is provided with two for fixing one end of the spring (7) slot cylinder (203), two the other end of the spring (7) is respectively with the flapper (4) both sides clamping; Elastomer (5), one end middle part is provided with through hole (501) with the round hole (401) selective communication; Straight pipe (6), it is symmetrically arranged in the two sides of the lower shell (2), the other end of the elastomer (5) is inserted into one end of the straight pipe (6), the other end of the straight pipe (6) passes through the cavity and is connected with outer tube, the flapper (4) is arranged in the middle of two elastomers (5); Key (3), it is inserted into the cavity through the accommodating groove (103), the lower shell (2) is provided with for guiding groove (204) with the key (3) movement track is limited, the middle part of the key (3) is clamped with the middle part of the flapper (4), to drive the flapper (4) lower shift; Wherein, the flapper (4) both sides are provided with cantilever (402), the spring (7) is sleeved on the cantilever (402), two the middle part of the cantilever (402) is provided with square middle part protruding (403), the lower side of the middle part protruding (403) is provided with the round hole (401);The middle part of the key (3) is provided with middle part recess (301) with the middle part protruding (403) clamping; Initial state, the upper shell (1) presses the key (3) and the flapper (4), and compresses the spring (7), the round hole (401) is misaligned with the through hole (501) distribution;When the key (3) is pressed and drives the flapper (4) lower shift, and the spring (7) is compressed, the round hole (401) gradually coincides with the through hole (501);When the flapper (4) is lowered to the lowermost, the round hole (401) coincides with the through hole (501) completely.

2. The push-to-pass globe valve of claim 1, wherein, The elastomer (5) and the straight pipe (6) are sealed connection.

3. The push-to-pass globe valve of claim 2, wherein, The other end of the elastomer is provided with annular dovetail structure (502), one end of the straight pipe (6) is provided with annular dovetail groove (601), the annular dovetail groove (601) is clamped with the annular dovetail structure (502) and is fixed.

4. The push-to-pass globe valve of claim 3, wherein, The other end of the straight pipe (6) is provided with circular ring structure (602), and the circular ring structure (602) is used for being connected with the outer tube.

5. The push-to-pass globe valve of claim 4, wherein, The sidewall of both ends of the upper shell (1) is provided with first semicircular notch (102), and the sidewall of both ends of the lower shell (2) is provided with second semicircular notch (202). The first semicircular notch (102) and the second semicircular notch (202) cooperate to form a circular notch, and the circular ring structure (602) is used for clamping and fixing with the circular notch.

6. A push-to-pass globe valve according to any one of claims 1 to 5, characterized in that The straight-through pipe (6) is provided with a square flange (603), the upper shell (1) is provided with two symmetrically distributed first grooves (101), the lower shell (2) is provided with two symmetrically distributed second grooves (201), the bottom of the square flange (603) is clamped and fixed with the second groove (201), and the top of the square flange (603) is clamped and fixed with the first groove (101).

7. A push-to-pass globe valve according to any one of claims 1 to 5, characterized in that The top of the key (3) is an oval shell, and the containing groove (103) is an oval hole groove, which is arranged at an angle of 45° with the upper shell (1).

8. The push-to-pass globe valve of claim 7, wherein, The inside of the oval shell is provided with the middle groove (301), the bottom of the oval shell is provided with the contact flange (302) around, and the two diagonally distributed contact flanges (302) are both provided with a long strip-shaped guide protrusion (303); the lower shell (2) is provided with two diagonally distributed guide grooves (204), and the guide protrusion (303) moves up and down along the guide groove (204).

9. A valve assembly comprising: The straight-through gate valve comprises the press type straight-through gate valve according to any one of claims 1-8.

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