Valve assembly and pressing type straight-through gate valve thereof

Abstract

The invention discloses a valve assembly and a pressing type straight-through gate valve thereof, and relates to the technical field of straight-through valves. The lower shell and the upper shell are assembled and connected to form a cavity; the brake pad is provided with a circular hole; a spring; a through hole is formed in one end of the elastic body; the straight-through pipes are symmetrically arranged on the two sides of the lower shell, the other ends of the elastic bodies are inserted into one ends of the straight-through pipes, the other ends of the straight-through pipes penetrate through the cavity to be connected with the outer pipe, and the brake pad is arranged between the two elastic bodies; the key penetrates through the containing groove to be inserted into the cavity, a guide groove is formed in the lower shell, and the middle of the key is clamped with the middle of the brake pad; in an initial state, the upper shell presses the key and the brake pad and compresses the spring, and the round hole and the through hole are distributed in a staggered mode. When the key is stressed and pressed to drive the brake pad to move downwards and compress the spring, the round hole gradually coincides with the through hole. And when the brake pad moves downwards to the bottommost part, the circular hole and the through hole are completely overlapped. The device is compact in structure, good in using effect and convenient for an operator to hold and use with one hand.

Description

Technical Field

[0001] The present invention relates to the technical field of through-valve, and more specifically, to a push-type through-gate valve. In addition, the present invention also relates to a valve assembly including the push-type through-gate valve. Background Art

[0002] Currently, most water valves and air valves used in medical devices on the market (such as handheld suction devices) are rotary valves. The valve body of the rotary valve is large in size, and especially the thickness of the rotary valve is mostly thick, which makes it difficult to use on thinner equipment. In addition, the control method of the rotary valve is to rotate on and off, which is difficult to operate with one hand.

[0003] In handheld suction devices, the component that controls the suction switch is usually a through valve, which is built into the device. The most comfortable way to hold a handheld suction device is similar to holding a pen. According to ergonomic requirements, the device cannot be too thick and needs to be able to be operated with one hand. Therefore, the size and control method of the through valve are the key to restricting the product function.

[0004] In the prior art, common through-valve systems mostly include the following two methods. The first method is to use a plastic part to press a hose to realize valve opening and closing control. However, although this method can reduce the valve size, the rebound performance of the hose deteriorates during frequent pressing of the hose, resulting in poor opening and closing of the valve. The second method is to use a press-type control 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 in one hand, making it uncomfortable for the operator to use the device.

[0005] In summary, how to provide a straight-through valve with a compact structure, good use effect and can be held for use is a problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a push-type straight-through gate valve, which is a straight-through valve with a compact structure, stable use, and can be held for use.

[0007] Another object of the present invention is to provide a valve assembly including the above-mentioned push-type straight-through gate valve.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A push-type straight-through gate valve, comprising:

[0010] An upper shell, the top of which is provided with a receiving groove;

[0011] A lower shell, which is assembled and connected with the upper shell to form a cavity;

[0012] A gate piece is vertically arranged in the cavity, and the gate piece is provided with a circular hole;

[0013] Spring, the lower shell is provided with two slotted cylinders for fixing one end of the spring, and the other ends of the two springs are respectively clamped with the two sides of the brake piece;

[0014] An elastic body, wherein a through hole selectively connected to the circular hole is provided in the middle of one end of the elastic body;

[0015] A straight-through pipe 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 passes through the cavity and is connected to the outer tube, and the gate is arranged in the middle of the two elastic bodies;

[0016] A button is inserted into the cavity through the receiving groove, the lower shell is provided with a guide groove for limiting the movement trajectory of the button, and the middle part of the button is engaged with the middle part of the gate piece to drive the gate piece to move downward;

[0017] In the initial state, the upper shell presses the button and the gate piece and compresses the spring, and the circular hole and the through hole are staggered; when the button is pressed downward to drive the gate piece downward and compress the spring, the circular hole gradually overlaps with the through hole; when the gate piece moves down to the bottom, the circular hole completely overlaps with the through hole.

[0018] In one embodiment, the elastomer and the through pipe are sealingly connected.

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

[0021] In one embodiment, both end side walls of the upper shell are provided with a first semicircular notch, and both end side walls of the lower shell are provided with a second semicircular notch. The first semicircular notch and the second semicircular notch cooperate to form a circular notch, and the annular structure is used to be clamped and fixed 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 to the second groove, and the top of the square flange is clamped and fixed to the first groove.

[0023] In one embodiment, cantilevers are provided on both sides of the gate piece, the spring sleeve is arranged on the cantilever, a square middle protrusion is provided between the two cantilevers, and the round hole is provided below the middle protrusion; a middle groove is provided in the middle of the button to be clamped with the middle protrusion.

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

[0025] In one embodiment, the middle groove is provided in the middle of the interior of the elliptical shell, contact flanges are provided around the bottom of the elliptical shell, and the two diagonally distributed contact flanges are provided with long 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 comprises the push-type straight-through gate valve described in any one of the above items.

[0027] When using the push-type straight-through gate valve provided by the present invention, first, the spring can be inserted into the slotted cylinder, and then the two sides of the gate piece can be clamped with the two springs respectively. After that, the other end of the elastomer can be inserted into one end of the straight-through tube, and the two straight-through tubes can be symmetrically installed on the two sides of the lower shell, and then the two elastomers can be respectively abutted against the two sides of the gate piece. Then, the button can be clamped with the guide groove to limit the movement trajectory of the button through the guide groove, and the middle part of the button will be clamped with the middle part of the gate piece so that the button can drive the gate piece to move downward. Finally, the upper shell and the lower shell can be assembled and connected. While installing the upper shell, the receiving groove of the upper shell through which the button passes is inserted into the cavity to complete the assembly process of the device.

[0028] After the upper shell and the lower shell are assembled, the elastic body can be compressed and deformed, and the two elastic bodies can clamp the gate disc. Moreover, the upper shell can press the button to transfer the force to the gate disc. The two sides of the gate disc are respectively clamped with two springs to transfer 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 disc. In the initial state, the circular hole and the through hole are staggered, so that the two straight-through pipes and the gate disc are not connected, which is equivalent to the disconnected 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, and the button is pressed downward to drive the gate disc downward, and compress the spring to store potential energy. At this time, the circular hole gradually overlaps with the through hole, which is equivalent to gradually opening the valve opening, so that the two straight-through pipes and the gate disc are partially connected, and the medium gradually passes through the valve.

[0029] When the operator presses the button to the lowest position, the gate moves to the bottom, and the circular hole and the through hole completely overlap, which is equivalent to fully opening the valve. At this time, the two straight-through pipes and the gate are connected to each other, which is convenient for the medium to flow. When the force on the button disappears, the spring releases potential energy and pushes the gate upward. At this time, the overlap between the circular hole of the gate and the through hole of the elastic body gradually decreases, and the valve gradually closes. When the gate moves to the top, the valve returns to its natural state, the circular hole and the through hole are completely misaligned, the valve is completely cut off, and the medium cannot flow.

[0030] The device integrates various components through the upper shell and the lower shell, so that the device structure is compact and can be manufactured into a small volume and thin thickness structure, which can be applied to very small medical equipment. Moreover, in order to further reduce the structure of the device, the structure of the upper shell and the lower shell can be copied to the outer shell of the device, that is, the upper shell and / or the lower shell of the present application are replaced by the outer shell of the device, so that the overall thickness of the device can be made thinner. In addition, the valve opening operation is achieved by pressing the button downward, and the valve closing operation is achieved 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-type design. In addition, the gate plate moves up and down to realize the valve opening and closing operation, and the gate plate is not easy to be deformed and damaged, and its use effect is better than that of the hose.

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

[0032] In addition, the present invention also provides a valve assembly including the above-mentioned push-type straight-through gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0034] Figure 1 An exploded view of the push-type straight-through gate valve provided by the present invention;

[0035] Figure 2 This is the main cross-sectional view of the push-type straight-through gate valve after assembly;

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

[0037] Figure 4 is a schematic diagram of the structure of the upper shell;

[0038] Figure 5 is a schematic diagram of the structure of the lower shell;

[0039] Figure 6 It is a schematic diagram of the structure of the button;

[0040] Figure 7 It is a schematic diagram of the structure of the brake piece;

[0041] Figure 8 is a schematic diagram of the structure of the elastomer;

[0042] Fig. 9 is a front cross-sectional view of the elastic body;

[0043] Fig.10 It is a structural schematic diagram of a straight-through pipe;

[0044] Fig.11 This is the main cross-sectional view of the straight-through pipe.

[0045] Reference numerals:

[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-button; 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 pipe; 601-annular dovetail groove; 603-square flange; 7-spring. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] The core of the present invention is to provide a push-type straight-through gate valve, which has a compact structure, relatively good use effect, and is convenient for operators to hold and use with one hand. Another core of the present invention is to provide a valve assembly including the above-mentioned push-type straight-through gate valve.

[0049] Please refer to Figures 1 to 11 .

[0050] This specific embodiment provides a push-type straight-through gate valve, comprising:

[0051] The upper shell 1 has a receiving groove 103 at the top;

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

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

[0054] The lower shell 2 is provided with two slotted cylinders 203 for fixing one end of the spring 7, and the other ends of the two springs 7 are respectively clamped with the two sides of the gate plate 4;

[0055] The elastic body 5 has a through hole 501 at the middle of one end thereof, which is selectively connected with the circular hole 401;

[0056] The straight-through pipe 6 is symmetrically arranged on both sides of the lower shell 2. The other end of the elastic body 5 is inserted into one end of the straight-through pipe 6. The other end of the straight-through pipe 6 passes through the cavity and is connected to the outer tube. The gate 4 is arranged between the two elastic bodies 5.

[0057] The button 3 is inserted into the cavity through the receiving groove 103. The lower shell 2 is provided with a guide groove 204 for limiting the movement trajectory of the button 3. The middle part of the button 3 is engaged with the 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 spring 7, and the circular hole 401 and the through hole 501 are staggered; when the button 3 is pressed downward to drive the gate piece 4 to move downward and compress the spring 7, the circular hole 401 gradually overlaps with the through hole 501; when the gate piece 4 moves to the bottom, the circular hole 401 completely overlaps with the through hole 501.

[0059] It should be noted that the elastic body 5 will be deformed by horizontal force during assembly so as to clamp the gate piece 4 horizontally. Moreover, a group of mutually offset 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 be kept consistent, and the circular hole 401 and the through hole 501 are offset in the initial state). After being assembled in place, the elastic body 5 remains stationary, and the gate piece 4 is driven to move up and down by the button 3 and the spring 7, so that the circular hole 401 and the through hole 501 are changed between overlap and offset, thereby realizing the on-off control of the valve.

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

[0061] When using the push-type straight-through gate valve provided by the present invention, first, the spring 7 can be inserted into the slotted cylinder 203, and then the two sides of the gate plate 4 can be clamped with the two springs 7 respectively. After that, the other end of the elastomer 5 can be inserted into one end of the straight-through tube 6, and the two straight-through tubes 6 can be symmetrically installed on both sides of the lower shell 2, and then the two elastomers 5 can be respectively abutted against the two sides of the gate plate 4. Then, the button 3 can be clamped with the guide groove 204 to limit the movement trajectory of the button 3 through the guide groove 204, and the middle part of the button 3 will be clamped with the middle part of the gate plate 4, so that the button 3 can drive the gate plate 4 to move downward. Finally, the upper shell 1 and the lower shell 2 can be assembled and connected. While installing the upper shell 1, the receiving groove 103 of the upper shell 1 through which the button passes is inserted into the cavity 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 can be compressed and deformed, and the two elastic bodies 5 can clamp the gate 4. Moreover, the upper shell 1 can press the button 3 to transfer the force to the gate 4. The two sides of the gate 4 are respectively connected with the two springs 7 to transfer the force to the spring 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 4. In the initial state, the circular hole 401 and the through hole 501 are staggered, so that the two straight-through pipes 6 and the gate 4 are not connected, which is equivalent to the disconnected 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 3 downward, and the button 3 is pressed downward to drive the gate 4 to move downward, and compress the spring 7 to store potential energy. At this time, the circular hole 401 gradually overlaps with the through hole 501, which is equivalent to gradually opening the valve opening, so that the two straight-through pipes 6 and the gate 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 4 moves down to the bottom, and the circular hole 401 completely overlaps with the through hole 501, which is equivalent to fully opening the valve. At this time, the two straight-through pipes 6 and the gate 4 are connected to each other, which is convenient for the medium to flow. When the force on the button 3 disappears, the spring 7 releases the potential energy and pushes the gate 4 upward. At this time, the overlap between the circular hole 401 of the gate 4 and the through hole 501 of the elastic body 5 gradually decreases, and the valve gradually closes. When the gate 4 moves to the top, the valve returns to its natural state, the circular hole 401 and the through hole 501 are completely misaligned, the valve is completely cut off, and the medium cannot flow.

[0064] The device integrates various components through the upper shell 1 and the lower shell 2, so that the device structure is compact and manufactured into a small volume and thin thickness structure, so that the device can be applied to very small medical equipment. Moreover, in order to further reduce the structure of the device, the structure of the upper shell 1 and the lower shell 2 can be copied to the outer shell of the device, that is, the upper shell 1 and / or the lower shell 2 of the present application are replaced by the outer shell of the device, so that the overall thickness of the device can be made thinner. In addition, the valve opening operation is achieved by pressing the button 3 downward, and the valve closing operation is achieved by removing the pressing force and using the elastic force of the spring 7, so that the operator can operate with one hand and can realize the grip-type design. In addition, the gate 4 moves up and down to realize the valve opening and closing operation, and the gate 4 is not easy to be deformed and damaged, and its use effect is better than that of the hose.

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

[0066] In one embodiment, the elastic body 5 and the straight-through pipe 6 are sealed and connected to avoid leakage of the medium at the connection between the elastic body 5 and the straight-through pipe 6 when the valve is opened and the medium flows.

[0067] In one embodiment, Figure 8 and Fig. 9 As shown, the other end of the elastomer 5 is provided with an annular dovetail structure 502, and one end of the straight-through pipe 6 is provided with an annular dovetail groove 601, and the annular dovetail groove 601 is fixed to the annular dovetail structure 502 to achieve a fixed and sealed connection between the elastomer 5 and the straight-through pipe 6.

[0068] In one embodiment, a circular ring structure 602 is provided at the other end of the straight tube 6, and the circular ring structure 602 is used to connect with the outer tube, that is, the circular ring structure 602 can pass through both sides of the cavity to facilitate the connection between the outer tube and the circular ring structure 602 to achieve the communication assembly of the valve and other components.

[0069] In one embodiment, the side walls at both ends of the upper shell 1 are provided with a first semicircular notch 102, and the side walls at both ends of the lower shell 2 are provided with a second semicircular notch 202. The first semicircular notch 102 and the second semicircular notch 202 cooperate to form a circular notch, and the annular structure 602 is used to be clamped and fixed with the circular notch so that the straight-through pipe 6 is firmly fixed 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 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 to the second groove 201, and the top of the square flange 603 is clamped and fixed to the first groove 101.

[0071] It should be noted that a square flange 603 can be designed in the middle of the straight-through pipe 6, a first groove 101 is provided at two corresponding positions inside the upper shell 1, and a second groove 201 is provided at two corresponding positions inside the lower shell 2, and the first groove 101 and the second groove 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, and the top and bottom of the flange 603 on the straight-through pipe 6 are respectively matched with the first groove 101 and the second groove 201, the elastic body 5 is arranged in the middle of the straight-through pipe 6, the gate 4 is arranged in the middle of the two elastic bodies 5, and the central axis of the straight-through valve 6 and the elastic body 5 is kept in a line, which is convenient for processing and manufacturing the components and assembling and positioning the components.

[0072] In one embodiment, Figure 1 , Figure 6 as well as Figure 7 As shown, cantilevers 402 are provided on both sides of the gate piece 4, and the spring 7 is sleeved on the cantilevers 402. A square middle protrusion 403 is provided between the two cantilevers 402, and a round hole 401 is provided below the middle protrusion 403; a middle groove 301 is provided in the middle of the button 3 to engage with the middle protrusion 403. Therefore, the button 3 can drive the gate piece 4 to move downward, and the spring 7 can be compressed during the downward movement to store potential energy. When the operator no longer presses the button 3, the spring 7 can move upward to drive the gate piece 3 and the button 3 to reset.

[0073] In one embodiment, the top of the button 3 is an elliptical shell, and the receiving groove 103 is an elliptical hole groove, which is set at a 45° angle with the upper shell 1. This helps to make the device structure more compact and the shell thickness thinner. Of course, the receiving groove 103 can also be set to be distributed at an angle of 30°, 60° or 90° with the upper shell 1, etc., but this will make the button 3 larger, the space required for the shell is also larger, and the overall structure of the device is larger.

[0074] In one embodiment, a central groove 301 is provided in the middle of the interior of the elliptical shell, contact flanges 302 are provided around the bottom of the elliptical shell, and two diagonally distributed contact flanges 302 are provided with long 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 protrusion 403 of the gate piece 4 is engaged with the middle groove 301 of the key 3 to achieve a fixed connection between the gate piece 4 and the key 3. Two slotted cylinders 203 are provided at special positions of the lower shell 2, and two guide grooves 204 are also provided at special positions of the lower shell 2, and the guide protrusion 303 moves up and down along the guide grooves 204. The key 3 cooperates with the upper shell 1 through the receiving groove 103 on the upper shell 1, and the long strip guide protrusion 303 of the key 3 cooperates with the guide groove 204 of the lower shell 2 to achieve the upward and downward movement guidance of the key 3. Two springs 7 are provided in the cavity, which are respectively placed in the slotted cylinders 203 of the lower shell 2 and sleeved on the cantilever 402 of the gate piece 4 to achieve the limit of the spring 7.

[0076] It should be noted that the distance between the flange of the upper shell 1 (i.e., the circumferential height of the upper shell 1) and the flange of the lower shell 2 (i.e., the circumferential height of the lower shell 2) is specially designed. Therefore, after the upper shell 1 and the lower shell 2 are assembled, the elastic body 5 can be compressed and deformed, the gate piece 4 can be clamped, and a pre-pressure can be applied to the gate piece 4. The pre-pressure has the effect of preventing misalignment and shaking. The misalignment and shaking are mainly achieved by the cooperation between the gate piece 4, the button 3 and the shell. Specifically, it means that the middle protrusion 403 and the middle groove 301 are rigidly matched, so that the gate piece 4 and the button 3 are connected to form an integrated structure, and the two will not move relative to each other. Moreover, the guide protrusion 303 on the button 3 cooperates with the guide groove 204 of the lower shell 2, and the elliptical shell of the button 3 cooperates with the receiving groove 103 of the upper shell 1 to achieve 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 lateral distance design and the longitudinal distance design of the shell, wherein the lateral distance design is mainly intended to achieve straight-through (i.e., the central axes of the straight-through tube 6 and the elastomer 5 are aligned and distributed, and the two elastomers 5 clamp the gate pad 4), so that the elastomer 5 and the gate pad 4 are sealed. The smaller the lateral distance of the shell, the greater the compression of the elastomer 5, and theoretically the better the sealing between the elastomer 5 and the gate pad 4 and between the elastomer 5 and the straight-through tube 5. However, the lateral distance of the shell cannot be reduced indefinitely. If the lateral distance is too small, the friction between the elastomer 5 and the gate pad 4 will increase, and it will easily reduce the life of the elastomer 5, or even cause direct failure.

[0078] In addition, the main purpose of the longitudinal distance design of the housing is to achieve the comfort of pressing the button 3 and the smoothness of the button 3 bouncing up. Of course, it is also to make the spring 7 have a certain pre-pressure, which is a means to achieve the smooth bouncing up of the button 3. If the spring 7 has no pre-pressure, there will be friction between the elastic body 5 and the gate 4 during the bouncing process, and the button 3 cannot be fully bounced into place, resulting in the inability to completely close the valve (that is, the button 3 and the gate 4 bounce back to the initial state).

[0079] Furthermore, the design of the lateral distance and the longitudinal distance is not independent, that is, when the sealing of the valve (the key performance of the valve on and off) and the operability are realized as a whole, the calculation of the lateral distance and the longitudinal distance is involved at the same time. If the lateral distance is designed separately, while ensuring the sealing of the gate plate 4 and the elastic body 5, it will affect the friction on the gate plate 4, and then affect the smoothness of the up and down movement of the gate plate 4. The smaller the lateral distance, the greater the compression deformation of the elastic body 5, and the greater the friction on the gate plate 4. If the gate plate 4 and the button 3 want to bounce smoothly, the preload of the spring 7 needs to be increased (which includes two means, one is to choose a larger spring 7, and the other is to increase the longitudinal preload distance, but both means will cause adverse effects, among which, choosing a larger spring will increase the width of the product, and increasing the longitudinal preload distance will increase the height of the product. No matter which means is used, it will make the product larger). At this time, the button 3 and the gate plate 4 can bounce smoothly, but the pressing force of the button 3 will also increase, thereby affecting the comfort of pressing.

[0080] If the longitudinal distance is designed separately, the ideal effect is to select a small spring 7 to ensure that the button 3 bounces up smoothly while making the pressing force of the button 3 as small as possible. In this case, the friction force on the gate plate 4 must also be reduced, so the lateral distance must be increased. However, if the lateral distance increases to a certain extent, it will affect the sealing of the valve.

[0081] Therefore, it is necessary to find a balance point among the spring 7, the lateral distance, the longitudinal distance, and the hardness of the elastic body 5. For example, first, the model of the spring 7 can be selected, and the hardness parameters of the elastic body 5 can be selected. Then, by adjusting the lateral distance and the longitudinal distance, and conducting multiple groups of tests to test the pressing force and the smoothness of the pop-up of the key 3, etc., finally, by recording each group of test data and analyzing the data, better dimensional data can be obtained.

[0082] In addition, it should be noted that, in order to further illustrate the method of using the push-type straight-through gate valve provided by the present invention, an example is given below to illustrate it.

[0083] When the upper shell 1 and the lower shell 2 are assembled, the upper shell 1 presses the contact flange 302 of the button 3 to transfer the force to the gate piece 4, and the gate piece 4 transfers 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 piece 4, and the height of the spring 7 installation is specially calculated, the spring 7 is in a semi-compressed state at this time, and the gate piece 4 and the elastic body 5 are just in the designed misaligned state. Since the spring 7 is compressed, the spring 7 always has an upward elastic force on the gate piece 4, and the gate piece 4 is in a clamped state of the elastic body 5 at this time, so the gate piece 4 will not fall naturally.

[0084] When the button 3 is forced downward, the button 3 can drive the gate 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 4 gradually overlaps with the through hole 501 on the elastic body 5, the straight-through valve gradually opens, and the medium gradually passes through; when the gate 4 moves to the bottom, the circular hole 401 on the gate 4 completely overlaps with the through hole 501 on the elastic body 5, and the straight-through valve is completely opened; when the force on the button 3 disappears, the spring 7 releases potential energy and can push the gate 4 upward. At this time, the overlap between the circular hole 401 on the gate 4 and the through hole 501 on the elastic body 5 decreases, and the straight-through valve gradually closes; when the gate 4 moves to the top, the straight-through valve returns to its natural state, the circular hole 401 and the through hole 501 are completely misaligned, and the straight-through valve is completely cut off.

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

[0086] 1. The device is small in size and thin in thickness (the overall thickness can be designed to be no more than 18 mm), so that the device can be applied to very small medical devices, and the upper shell 1 and the lower shell 2 can be copied to the outer shell of the device (that is, the upper shell 1 and / or the lower shell 2 are replaced by the outer shell of the device), so that the overall thickness of the device is made thinner;

[0087] 2. This device adopts a push-to-rebound design, which allows operators to operate it with one hand and realize a grip-type design;

[0088] 3. This device uses an elastic body 5 and a gate piece 4 to realize the valve opening and closing operation, and the service life of the device is longer and the fatigue and aging resistance is stronger;

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

[0090] In addition to the above-mentioned push-type straight-through gate valve, the present invention also provides a valve assembly including the push-type straight-through gate valve disclosed in the above-mentioned embodiment. For the structures of other parts of the valve assembly, please refer to the prior art and will not be described in detail herein.

[0091] It should be noted that the first semicircular notch 102 and the second semicircular notch 202, the first groove 101 and the second groove 201 mentioned in the present invention, wherein the first and the second are only used to distinguish the different positions, and there is no order of precedence.

[0092] In addition, it should be noted that the orientations or positional relationships indicated by "horizontal", "vertical", "up and down", etc. in the present invention are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of simplifying the description and facilitating understanding, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0093] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. Any combination of all embodiments provided by the present invention is within the protection scope of this invention and will not be described in detail here.

[0094] The valve assembly and the push-type straight-through gate valve provided by the present invention are introduced in detail above. The principle and implementation mode of the present invention are explained in this article by using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, the present invention can also be improved and modified without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A push-type straight-through gate valve, characterized in that: include: An upper shell (1) having a receiving groove (103) formed on the top thereof; A lower shell (2) which is assembled and connected with the upper shell (1) to form a cavity; A gate piece (4) vertically arranged in the cavity, the gate piece (4) being provided with a circular hole (401); Spring (7), the lower shell (2) is provided with two slotted cylinders (203) for fixing one end of the spring (7), and the other ends of the two springs (7) are respectively clamped with two sides of the gate plate (4); An elastic body (5), wherein a through hole (501) selectively connected to the circular hole (401) is provided in the middle of one end of the elastic body (5); A straight-through pipe (6) is symmetrically arranged on both sides of the lower shell (2), the other end of the elastic body (5) is inserted into one end of the straight-through pipe (6), the other end of the straight-through pipe (6) passes through the cavity and is connected to the outer pipe, and the gate (4) is arranged between the two elastic bodies (5); A button (3) is inserted into the cavity through the receiving groove (103), the lower shell (2) is provided with a guide groove (204) for limiting the movement trajectory of the button (3), and the middle part of the button (3) is engaged with the middle part of the gate plate (4) to drive the gate plate (4) to move downward; In the initial state, the upper shell (1) presses the button (3) and the gate piece (4) and compresses the spring (7), and the circular hole (401) and the through hole (501) are staggered; when the button (3) is pressed downward to drive the gate piece (4) to move downward and compress the spring (7), the circular hole (401) gradually overlaps with the through hole (501); when the gate piece (4) moves downward to the bottom, the circular hole (401) and the through hole (501) completely overlap.

2. The push-type straight-through gate valve according to claim 1, characterized in that: The elastic body (5) and the straight-through pipe (6) are sealedly connected.

3. The push-type straight-through gate valve according to claim 2, characterized in that: An annular dovetail structure (502) is provided at the other end of the elastic body, and an annular dovetail groove (601) is provided at one end of the straight-through pipe (6), wherein the annular dovetail groove (601) is clamped and fixed to the annular dovetail structure (502).

4. The push-type straight-through gate valve according to claim 3, characterized in that: The other end of the straight-through pipe (6) is provided with a circular ring structure 602, and the circular ring structure 602 is used to be connected to the outer pipe.

5. The push-type straight-through gate valve according to claim 4, characterized in that: The side walls at both ends of the upper shell (1) are each provided with a first semicircular notch (102), and the side walls at both ends 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) cooperate to form a circular notch, and the annular structure 602 is used for being clamped and fixed to the circular notch.

6. The push-type straight-through gate 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 to the second groove (201), and the top of the square flange (603) is clamped and fixed to the first groove (101).

7. The push-type straight-through gate valve according to any one of claims 1 to 5, characterized in that: Cantilevers (402) are provided on both sides of the gate piece (4), the spring (7) is sleeved on the cantilever (402), a square middle protrusion (403) is provided between the two cantilever arms (402), and the circular hole (401) is provided below the middle protrusion (403); a middle groove (301) is provided in the middle of the button (3) and is engaged with the middle protrusion (403).

8. The push-type straight-through gate valve according to claim 7, characterized in that: The top of the button (3) is an elliptical shell, the accommodating groove (103) is an elliptical hole groove, and the elliptical hole groove and the upper shell (1) are arranged at an angle of 45°.

9. The push-type straight-through gate valve according to claim 8, characterized in that: The middle groove (301) is provided in the middle of the interior of the elliptical shell, and contact flanges (302) are provided around the bottom of the elliptical shell. The two diagonally distributed contact flanges (302) are each 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 grooves (204).

10. A valve assembly, characterized in that: It comprises the push-type straight-through gate valve as described in any one of claims 1 to 9 above.

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