Manual blind plate valve

Abstract

According to the technical scheme, the manual blind plate valve is characterized in that the manual blind plate valve comprises two half valve bodies, a valve plate and three connecting screw rods, the valve plate comprises a blind hole plate and a through hole plate, and a plurality of first positioning holes located in the same circumference and a plurality of second positioning holes located in the same circumference are formed in the valve plate; the circumference where the multiple first positioning holes are located and the circumference where the multiple second positioning holes are located are concentric with the rotating center of the valve plate, the radius of the circumference where the multiple first positioning holes are located is smaller than that of the circumference where the multiple second positioning holes are located, and one half valve body is provided with a first alignment hole and two second alignment holes. The first alignment groove is coaxial with the first alignment hole, the second alignment grooves are coaxial with the two second alignment holes in a one-to-one correspondence mode, and the first positioning pin and the second positioning pin can be inserted into the two half valve bodies and the valve plate at the same time in a penetrating mode. The problem of leakage caused by deviation of the position of the valve plate relative to the half valve body in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of blind plate valves, and more specifically to a manual blind plate valve. Background Art

[0002] The manual blind plate valve consists of two half valve bodies, a valve plate and three connecting screws. The valve plate is located between the two half valve bodies. The two half valve bodies are connected to each other by three connecting screws to form a valve body. The three connecting screws are rotated in sequence by a special wrench to enable the two half valve bodies to complete the clamping and loosening actions. The position change of the blind hole plate and the through hole plate on the valve plate is used to achieve the purpose of opening and closing.

[0003] When the valve plate of the manual blind plate valve is manually switched each time, the through-hole plate may rotate excessively or fail to reach the specified rotation angle due to human factors, or the blind hole plate on the valve plate may be located on one side of the valve body and cause the valve plate to rotate relative to the valve body under the action of gravity. The above two situations will cause the position of the valve plate relative to the valve body to be non-unique, thereby causing the through-hole plate and the inner cavity of the valve body to be misaligned, causing the manual blind plate valve to be unable to reach the maximum flow rate. At the same time, after the two half valve bodies clamp the through-hole plate, the sealing pair and the through-hole edge of the through-hole plate may not be fully in contact, resulting in leakage, and the flow of the medium may also accelerate the local wear of the edge of the inner hole of the through-hole plate; after the two half valve bodies clamp the valve plate together, there is still a part of the valve plate that is always located on one side of the valve body. Under the action of gravity or external force, the valve plate will have a tendency or rotation relative to the valve body, and corresponding static friction or sliding friction will be generated between the valve plate and the sealing pair, which will aggravate the wear of the sealing pair and cause leakage. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model aims to provide a manual blind plate valve with accurate valve plate switching.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a manual blind plate valve, comprising two half valve bodies, a valve plate limited between the two half valve bodies and three connecting screws that are geometrically distributed and connect the two half valve bodies together, the valve plate comprising a blind hole plate and a through hole plate, the valve plate is provided with a plurality of first positioning holes located on the same circumference and a plurality of second positioning holes located on the same circumference, the circumference where the plurality of first positioning holes are located and the circumference where the plurality of second positioning holes are located are both concentric with the rotation center of the valve plate, the radius of the circumference where the plurality of first positioning holes are located is smaller than the radius of the circumference where the plurality of second positioning holes are located, and one of the The half valve body is provided with a first alignment hole located on the circumference of the multiple first positioning holes and two second alignment holes located on the circumference of the multiple second positioning holes. The other half valve body is provided with a first alignment groove coaxial with the first alignment hole and a second alignment groove coaxial with the two second alignment holes one-to-one. It also includes a first positioning pin that can be inserted into the first alignment hole, the first positioning hole and the first alignment groove at the same time, and a second positioning pin that can be inserted into the second alignment hole, the second positioning hole and the second alignment groove at the same time. By inserting the first positioning pin and the second positioning pin into the two half valve bodies and the valve plate at the same time, the valve plate cannot rotate relative to the half valve body.

[0006] As a further improvement of the utility model, it also includes multiple anti-slip parts corresponding to the first alignment hole and the second alignment hole respectively, one end of each of the anti-slip parts is hinged to one side of the corresponding alignment hole and the other end is detachably connected to the other side of the corresponding alignment hole, and the first positioning pin or the second positioning pin is limited in the corresponding alignment hole by blocking the anti-slip part at the opening of the first alignment hole or the second alignment hole.

[0007] As a further improvement of the utility model, two mutually symmetrical limit blocks are provided on the outer walls of one end of the first locating pin and the second locating pin, and limit grooves for accommodating the limit blocks and blocked by the anti-slip component are provided at the edges of the openings of the first alignment hole and the second alignment hole.

[0008] As a further improvement of the utility model, the plurality of anti-slip parts are all Ω-shaped, and the two ends of the plurality of anti-slip parts are respectively blocked outside the limiting grooves on both sides of the corresponding alignment holes, and the middle parts of the plurality of anti-slip parts protrude away from the hole openings of the corresponding alignment holes and the formed inner cavity can be partially passed through by the first positioning pin or the second positioning pin, and the two limiting blocks are made to conflict with the anti-slip parts by passing the first positioning pin or the second positioning pin into place.

[0009] As a further improvement of the present invention, pull rings are hingedly connected on the end surfaces of the first positioning pin and the second positioning pin facing the anti-slip component.

[0010] The beneficial effects of the utility model are as follows: after the valve plate is rotated into position relative to the half-valve body, the first locating pin and the second locating pin are simultaneously inserted into the two half-valve bodies and the valve plate, so that the valve plate cannot rotate relative to the half-valve body. Compared with the existing technology, such a design can ensure the accurate position of the valve plate after each switching. In the process of the two half-valve bodies moving toward each other, the valve plate cannot rotate relative to the half-valve body under the action of gravity, thereby ensuring that the through-hole plate and the half-valve body are coaxially arranged, while also reducing the wear of the sealing pair and ensuring the sealing performance; the design of using the first locating pin and the second locating pin to limit the valve plate in turn can provide multiple support points between the valve plate and the half-valve body, thereby ensuring the stable state of the valve plate. At the same time, the multi-point support can delay the deformation degree of each support point, thereby indirectly extending the service life of the first locating pin and the second locating pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model when it is closed;

[0012] Figure 2 for Figure 1 Exploded diagram of

[0013] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0014] Figure 4 for Figure 1 The main view;

[0015] Figure 5 for Figure 1 A stereogram from another perspective;

[0016] Figure 6 for Figure 5 The enlarged view of point B in the middle;

[0017] Figure 7 for Figure 5 Enlarged view of point C in the middle.

[0018] Figure numerals: 1. half valve body; 11. first alignment hole; 12. second alignment hole; 13. first positioning groove; 14. second positioning groove; 15. limiting groove; 2. valve plate; 21. blind hole plate; 22. through hole plate; 23. first positioning hole; 24. second positioning hole; 3. connecting screw; 4. first positioning pin; 41. limiting block; 42. pull ring; 5. second positioning pin; 6. anti-slip member. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments, wherein the same components are indicated by the same reference numerals.

[0020] Reference Figures 1 to 7As shown, a manual blind plate valve of this embodiment includes two half valve bodies 1, a valve plate 2 limited between the two half valve bodies 1, and three connecting screws 3 that are geometrically distributed and connect the two half valve bodies 1 together, and the valve plate 2 includes a blind hole plate 21 and a through hole plate 22;

[0021] Based on the above-mentioned prior art, the valve plate 2 is provided with a plurality of first positioning holes 23 and a plurality of second positioning holes 24 located on the same circumference. For the convenience of explanation, the number of the first positioning holes 23 and the second positioning holes 24 are both set to two. The circumferences where the two first positioning holes 23 are located and the circumferences where the two second positioning holes 24 are located are both concentric with the rotation center of the valve plate 2. The radius of the circumference where the two first positioning holes 23 are located is smaller than the radius of the circumference where the two second positioning holes 24 are located. One half of the valve body 1 is provided with a first alignment hole 11 located on the circumference where the two first positioning holes 23 are located and two second alignment holes 12 located on the circumference where the two second positioning holes 24 are located. The two second alignment holes 12 are respectively located on both sides of the vertical plane where the first alignment hole 11 is located. The other half of the valve body 1 is provided with a first alignment groove 13 coaxial with the first alignment hole 11 and a second alignment groove 14 coaxial with the two second alignment holes 12 corresponding one-to-one, and also includes a first positioning pin 4 and two second positioning pins 5.

[0022] In the initial state, the blind hole plate 21 is located between the two half valve bodies 1 and the through hole plate 22 is located on the left side of the half valve body 1, one of the first positioning hole 23 and the second positioning hole 24 are coaxial with the first alignment hole 11 and the second alignment hole 12 located on the left side of the first alignment hole 11, respectively, the other first positioning hole 23 and the other second positioning hole 24 are both located on the left outer side of the half valve body 1, the first positioning pin 4 is simultaneously inserted into the first alignment hole 11, the first positioning hole 23 and the first alignment groove 13, the second positioning pin 5 is simultaneously inserted into the second alignment hole 12, the second positioning hole 24 and the second alignment groove 14 located between the two half valve bodies 1, when it is necessary to switch the through hole plate 22 between the two half valve bodies 1, first pull out the first positioning pin 4 and the second positioning pin 5 from the corresponding alignment holes, and then the two half valve bodies 1 away from each other, then rotate the valve plate 2 until the through-hole plate 22 is coaxial with the half-valve body 1, the blind hole plate 21 and the positioning hole 23 are successively moved to the right side of the half-valve body 1, the first positioning hole 23 and the second positioning hole 24 previously located on the left outer side of the half-valve body 1 are respectively coaxial with the first alignment hole 11 and the second alignment hole 12 located on the right side of the first alignment hole 11, the first positioning hole 23 and the second positioning hole 24 previously coaxial with the first alignment hole 11 and the second alignment hole 12 located on the left side of the first alignment hole 11 are both moved to the right outer side of the half-valve body 1, and then the first positioning pin 4 and the second positioning pin 5 are respectively inserted into the first alignment hole 11 and the second alignment hole 12 located on the right side of the first alignment hole 11 so that the valve plate 2 cannot rotate relative to the half-valve body 1, and finally the two half-valve bodies 1 are moved toward each other to clamp the valve plate 2 again;

[0023] Compared with the prior art, such a design can ensure the accurate position of the valve plate 2 after each switching. In the process of the two half-valve bodies 1 moving toward each other, the valve plate 2 cannot rotate relative to the half-valve body 1 under the action of gravity, ensuring that the through-hole plate 22 is coaxially arranged with the half-valve body 1, while also slowing down the wear of the sealing pair and ensuring the sealing performance; the design of limiting the valve plate 2 in turn by using the first locating pin 4 and the second locating pin 5 can provide multiple supporting points between the valve plate 2 and the half-valve body 1, ensuring the stability of the valve plate 2. At the same time, the multi-point support can delay the deformation degree of each supporting point, indirectly extending the service life of the first locating pin 4 and the second locating pin 5;

[0024] It is further explained that the number of second locating pins 5 can be set to one or two according to actual processing requirements. When the number of second locating pins 5 is one, the second locating pins 5 can be switched from the two second alignment holes 12 to reduce the number of second locating pins 5 used and reduce costs. When the number of second locating pins 5 is two, two more second locating holes 24 can be added to the valve plate 2, so that each time the valve plate 2 rotates, there are two second locating holes 24 that are coaxial with the two second alignment holes 12. Compared with the aforementioned use of only one second locating pin 5 to change the two-point support to three-point support, the state stability of the valve plate 2 is further improved.

[0025] As a specific implementation method of the improvement, the multi-point latch structure implemented in the previous embodiment must have some individual positioning pins in a loose state, and different installation states of the half valve body 1, different working environments, or different transportation environments will cause individual positioning pins to fall off. To solve the above problem, refer to Figure 3 , Figure 6 and Figure 7 As shown, it also includes a plurality of anti-slipping members 6 corresponding to the first alignment hole 11 and the second alignment hole 12 respectively, and the plurality of anti-slipping members 6 can span the corresponding alignment holes, one end of the plurality of anti-slipping members 6 is hinged to one side of the corresponding alignment hole and the other end is detachably connected to the other side of the corresponding alignment hole, and two fixing blocks that can be respectively located on the upper and lower sides of the anti-slipping member 6 and fixedly connected to the half valve body 1 can be provided on the other side of the alignment hole, and when one end of the anti-slipping member 6 moves between the two fixing blocks, a latch can be used to simultaneously insert the two fixing blocks and one end of the anti-slipping member 6 from top to bottom To achieve the connection between the anti-slip component 6 and the fixed block, or to gradually reduce the gap between the two fixed blocks, when one end of the anti-slip component 6 moves between the two fixed blocks and gradually goes deeper, one end of the anti-slip component 6 is firmly clamped by the two fixed blocks, and the anti-slip component 6 is flipped open relative to the corresponding alignment hole to facilitate the insertion and removal of the first locating pin 4 or the second locating pin 5. The anti-slip component 6 is placed horizontally at the opening of the corresponding alignment hole so that the first locating pin 4 or the second locating pin 5 cannot fall out of the corresponding alignment hole, thereby ensuring the connection stability of the first locating pin 4 or the second locating pin 5.

[0026] As a specific implementation of the improvement, after the first locating pin 4 or the second locating pin 5 successively passes through the corresponding alignment hole and the locating hole and enters the alignment groove, there is a situation where the end of the first locating pin 4 or the second locating pin 5 touches the corresponding alignment groove. The user continues to apply thrust to the first locating pin 4 or the second locating pin 5 while holding the half valve body 1 processed with the alignment hole. This will cause the two half valve bodies 1 to tend to move away from each other, causing damage to the threads on the surface of the connecting screw 3. To solve the above-mentioned problem, refer to Figure 3 and Figure 6 As shown, two symmetrical limit blocks 41 are provided on the outer walls of one end of the first locating pin 4 and the second locating pin 5, and limit grooves 15 for accommodating the limit blocks 41 and blocked by the anti-slip component 6 are provided at the edges of the openings of the first alignment hole 11 and the second alignment hole 12. When the limit block 41 enters the limit groove 15 and touches the bottom of the limit groove 15, the first locating pin 4 or the second locating pin 5 is inserted into place. Such a design can provide the user with information that the first locating pin 4 or the second locating pin 5 has moved into place, thereby compensating for the defect that the first locating pin 4 or the second locating pin 5 pushes the other half valve body 1. At the same time, the design of the limit block 41 being limited in the limit groove 15 can ensure that the anti-slip component 6 can still limit the corresponding locating pin without changing the shape or size of the anti-slip component 6.

[0027] As a specific implementation of the improvement, when the first positioning pin 4 and the second positioning pin 5 are both pulled out and the valve plate 2 is not rotated into place, the first positioning pin 4 and the second positioning pin 5 need to be placed in other places, so that the first positioning pin 4 or the second positioning pin 5 is easily lost or damaged. To solve the above problem, refer to Figure 3 , Figure 6 and Figure 7 As shown, multiple anti-slip members 6 are designed to be Ω-shaped. After the first locating pin 4 or the second locating pin 5 is pulled out from the corresponding alignment hole, the part of the first locating pin 4 or the second locating pin 5 that has not been processed with the limiting block 41 is blocked at the opening of the corresponding alignment hole, and then the anti-slip member 6 is re-straddled at the opening of the corresponding alignment hole, and the two ends of the anti-slip member 6 are respectively blocked outside the limiting grooves 15 on both sides of the corresponding alignment hole, and the middle part of the anti-slip member 6 protrudes away from the opening of the corresponding alignment hole and the part of the first locating pin 4 or the second locating pin 5 that has not been processed with the limiting block 41 is accommodated in the inner cavity in the middle part of the anti-slip member 6, and finally the first locating pin 4 or the second locating pin 5 is moved relative to the anti-slip member 6 until the limiting block 41 is dragged by the anti-slip member 6. Such a design allows the user to not need to find a special position to place the first locating pin 4 or the second locating pin 5, thereby further improving the switching efficiency, while also having the functions of preventing loss and ensuring the structural stability of the first locating pin 4 or the second locating pin 5.

[0028] As a specific implementation method of the improvement, refer to Figure 6 and Figure 7 As shown, the first locating pin 4 and the second locating pin 5 are hinged with a pull ring 42 on the end surface facing the anti-slip component 6. The pull ring 42 can swing down naturally and does not interfere with the anti-slip component 6. Such a design can provide a pulling position for the user, making it easy to pull out the first locating pin 4 or the second locating pin 5.

[0029] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A manual blind plate valve, comprising two half valve bodies (1), a valve plate (2) limited between the two half valve bodies (1), and three connecting screws (3) which are geometrically distributed and connect the two half valve bodies (1) together, wherein the valve plate (2) includes a blind hole plate (21) and a through hole plate (22), characterized in that: The valve plate (2) is provided with a plurality of first positioning holes (23) and a plurality of second positioning holes (24) located on the same circumference, the circumferences of the plurality of first positioning holes (23) and the circumferences of the plurality of second positioning holes (24) are both concentric with the rotation center of the valve plate (2), the radius of the circumference of the plurality of first positioning holes (23) is smaller than the radius of the circumference of the plurality of second positioning holes (24), one of the half valve bodies (1) is provided with a first alignment hole (11) located on the circumference of the plurality of first positioning holes (23) and two second alignment holes (12) both located on the circumference of the plurality of second positioning holes (24), and the other half valve bodies (1) are provided with a plurality of first positioning holes (23) and a plurality of second positioning holes (12) located on the circumference of the plurality of second positioning holes (24), and the other half valve bodies (1) are provided with a plurality of first positioning holes (23) and a plurality of second positioning holes (12) located on the circumference of the plurality of second positioning holes (24). A first alignment groove (13) coaxial with the first alignment hole (11) and a second alignment groove (14) coaxial with the two second alignment holes (12) are provided on the half valve body (1), and the first positioning pin (4) can be inserted into the first alignment hole (11), the first positioning hole (23) and the first alignment groove (13) at the same time, and a second positioning pin (5) can be inserted into the second alignment hole (12), the second positioning hole (24) and the second alignment groove (14) at the same time. By inserting the first positioning pin (4) and the second positioning pin (5) into the two half valve bodies (1) and the valve plate (2) at the same time, the valve plate (2) cannot rotate relative to the half valve body (1).

2. A manual blind plate valve according to claim 1, characterized in that: It also includes a plurality of anti-slipping members (6) respectively corresponding to the first alignment hole (11) and the second alignment hole (12), one end of each of the plurality of anti-slipping members (6) being hinged to one side of the corresponding alignment hole and the other end being detachably connected to the other side of the corresponding alignment hole, and the first positioning pin (4) or the second positioning pin (5) being restricted in the corresponding alignment hole by the anti-slipping member (6) blocking the opening of the first alignment hole (11) or the second alignment hole (12).

3. A manual blind plate valve according to claim 2, characterized in that: Two mutually symmetrical limiting blocks (41) are arranged on the outer walls of one end of each of the first positioning pin (4) and the second positioning pin (5); limiting grooves (15) for accommodating the limiting blocks (41) and blocked by the anti-slip component (6) are arranged at the edges of the openings of the first alignment hole (11) and the second alignment hole (12).

4. A manual blind plate valve according to claim 3, characterized in that: The plurality of anti-slipping members (6) are all Ω-shaped, and the two ends of the plurality of anti-slipping members (6) are respectively blocked outside the limiting grooves (15) on both sides of the corresponding alignment holes, and the middle parts of the plurality of anti-slipping members (6) protrude in a direction away from the opening of the corresponding alignment holes, and the formed inner cavity can be partially passed through by the first positioning pin (4) or the second positioning pin (5), and the two limiting blocks (41) are in conflict with the anti-slipping member (6) by passing the first positioning pin (4) or the second positioning pin (5) into place.

5. A manual blind plate valve according to claim 1 or 2 or 3 or 4, characterized in that: Pull rings (42) are hingedly connected on the end surfaces of the first positioning pin (4) and the second positioning pin (5) facing the anti-slip component (6).

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