DE29623644U1 - Distribution valve - Google Patents

Description

PATENT ATTORNEY DIP L.-I NG. GERD UTERMANN

74072 HEILBRONN, Kilianstrasse 7 (Kilianspassage)

Tel. (07131) 82828, Fax (07131) 82814, e-mail: G.Utermann@t-online.de BW-Bank Heilbronn: 701 17106 00 (bank code 620 300 50) Postbank Stuttgart: 43016 704 (bank code 600 100 70)

Utility model application

B 29. 22 DE 11a G1 13 Nov. 1998/3M

Applicant: hirma

SBK Siegfried Böhnisch Plastics Technology GmbH

Maybachstrasse 1 D-74632 Neuenstein

Designation: Distributor valve ■ r

Description:

The invention relates to a distributor valve with flow meter, in particular for hot water heating systems, with a housing enclosing a main line section, a branch pipe arranged radially to the main line section with a connection for a branch line, which has a closable valve seat.

B 29. 22 DE 11a G1 ": ···.
981113M3 .:.·..·

A distributor valve with a flow meter is known from DE-PS 35 09 718 C2. This flow meter, which is also used successfully in practice in a similar design, has a bearing part with an external thread that carries a spindle with an external thread. This spindle is designed in several parts with components arranged in a sealed manner. In practice, however, a multi-part spindle has not been chosen, but rather a shape in which the threaded spindle part and the transparent handle part are designed as a uniform, one-piece injection-molded part, whereby an upper, unscrewable cap can be provided for insertion, which can also be used for venting. An indicator pin can be moved against spring force. The spring is located below the closure body in the free water space. This has assembly advantages. In the meantime, however, a valve arrangement with a flow meter display that is similar in function but much more complex in construction has come onto the market. In this case, the return spring is arranged in the transparent head section and is supported on an upper spring plate. Otherwise, several different components are designed as turned parts with auxiliary locking rings and as a handle part with screw-in option. This solution is complex.

B 29. 22 DE 11a G1 ". :.. *\ : . ·..:.··. 981113M3 .·.:..*·' .:. .:. ..·'..·

The invention is based on the object of improving the manufacturing and assembly technology of a distribution valve with flow meter with protective housing of the spring in the viewing head for long-term reliable function.

According to the invention, a spindle arranged coaxially to the branch pipe and diametrically to the connection is guided through the housing, the spindle having a handle and indicator part, a threaded part, a sealing ring fixing part, a guide and closure part and a bore extending through the spindle and closed off to the outside, a position indicator pin of the flow meter extending through the bore and the position indicator pin having a spring support, a spring which also determines the display position being clamped between the spring support and a spindle spring support, and the spindle carrying a closure body which, by rotating the spindle, directly opens and closes the outlet opening of the branch pipe located in the main line section at a distance from its inner wall, and the handle and indicator part, the threaded part and the sealing ring fixing part form a single, one-piece injection-molded part with a tight head, while the lower guide and closure part is connected by means of The holding device is inserted into the lower end of the sealing ring fixing part and secured in place.

B 29. 22 DE 11a G1 981113M3 .:.·..*

So now you have a long valve part that is closed at the top and in which the spring is housed in a protected manner and only another small plastic part that serves as a pin guide and can be inserted into the other valve part before assembly, clamped in place and glued if necessary.

Due to the use of a one-piece injection-molded part with a sealed head and the elimination of easily removable connections, in particular screw connections between the parts forming the spindle, there is no longer any risk of unwanted leakage of all the heating water in the heating circuit.

Further advantageous embodiments, features and advantages of the invention can be found in the further claims and the following description based on the single figure.

An embodiment of the invention is explained in more detail below using a schematic drawing, which shows a schematic representation of the distributor valve in a partial section through the longitudinal axis of the branch pipe and the spindle.

B 29. 22 DE 11a G1 *\ ·*·. . : :

981113M3 .:.·..· .:. .:♦

The distributor valve 30 has a housing 40, which is made as an injection-molded part from plastic and has an essentially cuboid-shaped or cube-shaped outer contour. The housing 40 has two through holes 42.1 and 42.2, which serve to pass through fastening bolts (not shown) for mutually bracing individual distributor valve elements. Fastening means are provided on both sides of the housing 40, which here are designed in the form of a dovetail 43 and a dovetail guide 44. To increase the rigidity of the housing 40 and to take into account the technical conditions of injection molding, as well as for thermal insulation, cavities 41 of different shapes are provided in the housing 40.

The housing 40 encloses a predominantly cylindrical main line section 45. A branch pipe 48 extends within the main line section 45 and is integrally formed in the housing 40. The longitudinal axis 49 of the branch pipe 48 runs normal to the housing top 50 and the housing bottom 53 and also intersects the central axis of the main line section 45 (not shown in Fig. 1) perpendicularly. The branch pipe 48 is connected via a lower housing opening 55 to a connection 56 arranged coaxially to the longitudinal axis 49, which has an external thread 57 for connecting a branch line (not shown).

B 29. 22 EN 11a G1
981113M3

- 6

The connection 56 is designed as a connection socket made of brass and is molded into the housing 40. If necessary, the branch pipe 48 could also be formed with an extension of the connection 56.

As can be seen from Fig. 1, the branch pipe 48 extends almost over the entire height or the entire diameter of the main line section 45, so that the inner end of the branch pipe 48, which forms a valve seat 59, is arranged at a small distance from the inner surface of the main line section 45. The valve seat 59 is shown rounded here, but can also be designed as a conical extension in order to take into account the respective requirements of a favorable flow guidance and sealing.

Coaxial to the longitudinal axis 49 of the branch pipe 48, an upper housing opening 60 is formed on the housing top 50, from which an annular housing extension protrudes, which is provided with an external thread 62 and a bore 63 with an internal thread 64. A bearing part 65, made of brass for example, is screwed into the internal thread 64 and has an external thread 66 for this purpose. The stop ring 68 is tightened firmly and sealingly against a shoulder 69. The bearing part 65 is also provided with an external hexagon 61 to enable tightening using a commercially available open-end wrench.

B 29. 22 EN 11a G1
981113M3

A spindle 75 is mounted in the central bore 72 of the bearing part 65 and is inserted into the bearing part 65 from the underside. The spindle 75, which is provided with a blind bore 81, is designed as a one-piece plastic part and has an upwardly projecting handle and display part 82, a threaded part 83 and a lower
Sealing ring fixing part 84.

The threaded part 83 has an external thread 76 that engages with an internal thread 73 provided in the area of the ring-shaped attachment 70 of the bearing part 65. To seal the gap between the bearing part 65 and the sealing ring fixing part 84, an O-ring 78 is provided, which is received and fixed in the radial groove 77 of the sealing ring fixing part. As a result, the external thread 76 of the threaded part 83 located above the sealing ring fixing part 84 is sealed against the heating water, which results in better and consistent usage properties.

A sleeve-shaped guide and closure part 85 is inserted into the lower end 79 of the sealing ring fixing part 84 by means of a holding device 90 and secured therein. The guide and closure part 85 has an annular groove 86 for receiving an O-ring 87. In order for this to ensure the seal to the valve seat 59 of the branch pipe 48,

B 29. 22 DE 11a G1 *: :··.♦ : : .····:": 981113M3 .:.·..* »· -

In order to ensure that the O-ring 87 can be securely held permanently under increased contact pressures, the O-ring 87 is also supported on an annular groove 91 assigned to it, which is provided at the lower end 79 of the sealing ring fixing part 84. The guide and closure part 85 has a bore 92 that penetrates it almost completely and that merges into a slightly smaller, coaxial bore 89 in the area of the lower end of the guide and closure part 85.

To adjust the flow rate, the spindle 75 is turned by hand on its handle and indicator part 82, whereby it moves up or down depending on the direction of rotation. To improve the transmission of force from the hand to the handle and indicator part 82, a roughness 99 is preferably provided on its upper end, preferably in the form of a gear-like groove running lengthwise to the spindle axis.

To limit the upward movement of the spindle 75, it has a shoulder 80 at the lower end 79, which engages in a corresponding groove 71 of the bearing part 65 during the upward movement. The spindle movement is limited downwards by the contact of the O-ring 87 with the valve seat 59 of the branch pipe 48.

B 29. 22 DE 11a G1 ·· :" ". *; *·..:>

981113M3

The guide and closure part 85 has a closure body 88 at the lower end with a spherical surface that tapers towards its lower end. When the spindle 75 is rotated and moved downwards, the closure body 88 dips into the upper end of the branch pipe 48, so that the passage cross-section between the closure body 88 and the inner wall of the branch pipe 48 can be varied or finely adjusted.

A flow element 96 is arranged in the branch pipe 48, which does not completely fill the pipe cross-section and can therefore be flowed around by the branch line flow that leads from the connection 56 through the branch pipe 48 to the main line section 45. The flow element 96 is attached to a position indicator pin 93 in the area of its end. This extends coaxially to the longitudinal axis 49 of the branch pipe 48 through the bore 89 of the guide and closure part 85 into the blind bore 81 of the spindle 75. A spring plate 94 is attached to the end of the position indicator pin 93 opposite the flow element 96. A spring 97 is supported on this, the other end of which rests on the front end of the blind bore 81, which ends a short distance in front of the upper end of the spindle 75. The position indicator pin 93 has an annular thickening 95 between its ends. Their distance from the

B 29. 22 DE 11a G1 » ;" ·· ·*:

981113M3 : : : · : :

The upper contact surface of the spring plate 91 is just large enough so that, on the one hand, the spring 97 is slightly pre-tensioned in the starting position shown and, on the other hand, the upper end of the lower position of the position indicator pin 93 shown in Fig. 1 protrudes slightly above the attachment 70 of the bearing part 65. The outer diameter of the thickening 95 is smaller than the inner diameter of the bore 92 but larger than the diameter of the bore 89 of the guide and closure part 85, so that the position indicator pin 95 forms a captive unit with the spindle 75 after assembly by inserting and fastening the guide and closure part.

The position indicator pin 95 is guided and supported in the area of the bore 89 of the guide and closure part 85. For this purpose, the position indicator pin 95 has a slightly smaller diameter than the bore 89 in the area between the lower end of the thickening 95 and the upper limit of the inflow element 96. The position indicator pin 95 is also guided and supported over the boundary surface of the spring plate 94 opposite the inner surface of the blind bore 81, whereby the outer diameter of the spring plate 94 is only slightly smaller than the diameter of the blind bore 81.

B 29. 22 EN 11a G1 981113M3

y ^#

Because the spindle 75 is at least partially made of a transparent plastic, the flow rate can be adjusted by turning the spindle 75 in a simple manner by visually checking the position of the position indicator pin 93, with the spring plate 94 advantageously also serving as a reading aid. A scale 98 provided on the handle and indicator part 82, which is preferably already produced during the manufacturing process by molding, enables the exact flow rate through the branch line to be read, since different throughputs or flow velocities in the branch pipe 48 deflect the flow element 96 and thus the spring plate 94 to different degrees against the force of the spring 97 from the illustrated starting position.

Although an adjustment of the closure body 88 leads to a corresponding adjustment of the inflow element 96 and thus of the position indicator pin 93, this adjustment is not caused by a change in the flow rate. However, this does not falsify the flow measurement because the spindle 75 and thus its handle and indicator part 82 with the scale 98 follows the adjustment movement of the closure body 88. Therefore, no correction of the scale division is required in order to take into account adjustment movements of the closure body 88 along the longitudinal axis 49 of the branch pipe 48 beyond the deflection of the inflow element 96 determined by the flow rate.

B 29. 22 DE 11a G1 « ·" ·; ·&iacgr;&Ggr;:&khgr;

981113M3 ·:”:· .:. ,:.·

12 -

According to a further advantageous embodiment of the invention, it has the following features: The branch pipe extends radially into the main line section of the housing. In the branch pipe, a flow element is provided which is pre-tensioned by the spring into an initial position and can be deflected by the branch line flow. The respective position of the flow element can be read from the outside through the transparent spindle, preferably on a scale. The spindle 75, which is partly manufactured separately, and the position indicator pin 93 form a captive unit.

An important part of the invention is reproduced below:

Distributor valve (30) with flow meter, in particular for hot water heating systems with a main line section (45) in a housing (40) and a branch pipe (48) as well as a spindle (75) for closing and adjusting as well as for displaying the flow. In this case, a position indicator pin (93) with a flow element (96) in the branch pipe (48) is located in the transparent spindle (75). A spring (97) is located in a blind hole (81). The lower guide and closure part (85) as well as a sealing ring fixing part (84) are connected to one another with holding aids (90).

PATENT ATTORNEY &ogr;&Ggr;&Rgr;&Egr;.-&Igr;^ &bgr;» £E*LÖ UTERMANN

74072 HEILBRONN, Kilianstraße 7 (Kilianspassage) Tel. (07131) 82828, Fax (07131) 82814, e-Mail: G.Utermann@t-online.de

BW-Bank Heilbronn: 701 17106 00 (bank code 620 300 50) Postbank Stuttgart: 43016 704 (bank code 600 100 70)

Utility model application

B 29. 22 DE 11a G1 13 Nov. 1998/3M

Applicant: Company

SBK Böhnisch Plastics Technology
mbH
Maybachstrasse 1
D-74632 Neuenstein

Designation: Distributor valve List of reference symbols

30 Distribution valve 84 Sealing ring fixing part 40 Housing 85 Guide and locking part 41 cavity 86 Radial groove 42.1 drilling 87 O-ring 42.2 The 88 Closure body 43 dovetail 89 drilling 44 Dovetail guide 90 Holding aids 45 Main line section 91 Ring groove 48 Branch pipe 92 drilling 49 Longitudinal axis (of 48) 93 Position indicator pin 50 Housing top 94 Spring plate 53 Bottom of the case 95 thickening 55 lower housing opening 96 Inflow element 56 Connection 97 Feather 57 External thread 98 scale 59 Valve seat 99 Corrugation 60 upper housing opening 61 Housing approach 62 External thread 63 drilling 64 inner thread 65 Bearing part 66 External thread 61 External hexagon 68 Stop ring 69 shoulder 70 Essay 71 Groove 72 drilling 73 inner thread 75 spindle 76 External thread (of 75) 77 Radial groove 78 O-ring 79 lower end (of 84) 80 shoulder 81 Blind hole 82 Handle and display part 83 Threaded part

Claims (15)

Utility model application B 29. 22 DE 11a Gl Applicant: SBK S.Böhnisch...GmbH 13.Nov.98/M3/F8455A Claims: 1. Distributor valve with flow meter, in particular for hot water heating systems, with a housing (40) enclosing a main line section (45), a branch pipe (48) arranged radially to the main line section (45) with a connection (56) for a branch line, which has a closable valve seat (59), with the following features: A spindle (75) arranged coaxially to and opposite the branch pipe (48) is guided through the housing (40);
- the spindle (75) has a Handle and display part (82), a threaded part (83), a sealing ring fixing part (84), a guide and closure part (85) and a bore (81) extending through the spindle and closed to the outside; a position indicator pin (93) of the flow meter integrated into the branch pipe (48) extends through the bore (81); the position indicator pin (93) has a spring support; a spring (97) which determines the display position is clamped between the spring support and a spindle spring support; the spindle (75) carries a closure body (88) which, by rotating the spindle, directly opens and closes the outlet opening of the branch pipe (48) and determines the passage cross-section; the handle and display part (82), the threaded part (83) and the sealing ring fixing part (84) form a single, one-piece injection-molded part with a tight head; the lower guide and closure part (85) is inserted into the lower end of the sealing ring fixing part (84) by means of a holding aid (90) and is fastened therein. B 29. 22 DE 11a Gl &idigr;&iacgr;
981113M3/F8455A 2. Distributor valve according to claim 1,
characterized in that the guide and closure part (85) is designed as a single, one-piece plastic part. 3. Distributor valve according to one of claims 1 or 2, characterized in that the holding aids (90) are designed in the form of a profile toothing arranged over the circumference of the guide and closure part (85), which engages in a suitably shaped profile in the region of the lower end of the sealing ring fixing part (84). 4. Distributor valve according to claim 3,
characterized in that the profile toothing has a trapezoidal cross-section. 5. Distributor valve according to one of claims 1 to 4, characterized in that the flow meter in the branch pipe (48) is designed with a flow element (96) which is prestressed into an initial position by the spring (97) and can be deflected by the branch line flow; 6. Distributor valve according to one of claims 1 to 5, characterized in that a part of the position indicator pin (93) indicating the respective position of the inflow member (96) is arranged within the spindle (75) which is transparent at least in partial areas. »■* B 29. 22 DE 11a Gl : I I* ! ·. ' 1.··, 981113M3/F8455A 7. Distributor valve according to one of claims 1 to 6, characterized in that the spring (97) is arranged in the bore (81) extending through the spindle (75), preferably in the handle and indicator part (82) in a protected manner for long-term reliable operation. 8. Distributor valve according to one of claims 1 to 7, characterized in that the inflow member (96) and the position indicator pin (93) are jointly connected to the closure body (88) in a deflectable manner. 9. Distributor valve according to one of claims 1 to 8, characterized in that the spindle (75) manufactured in separate parts and the position indicator pin (93) mounted in it form a captive unit. 10. Distributor valve according to claim 9, characterized in that the position indicator pin (93) has a thickening (95) at one end, the radial thickness of which is greater than the diameter of a bore (89) provided in the guide and closure part (85) through which the position indicator pin (93) passes. 11. Distributor valve according to claim 10, characterized in that the axial distance between the lower end of the thickening (95) in the area of the bore (89) and the spring support is so large that the spring (97) is pre-tensioned in the initial position. 29. 22 EN 1 la Gl •
*
• »&agr;
•
···
» * •
• •
•
# · •
··· ·
·« «2» ·»· B 981113M3/F8455A 12. Distributor valve according to one of claims 1 to 11, characterized in that the spring support is opposite the end of the bore (81) extending through the spindle (75), 13. Distributor valve according to one of claims 1 to 12, characterized in that the position indicator pin (93) is mounted and guided only in the region of the spring support and in the region of the end of the guide and closure part (85). 14. Distributor valve according to one of claims 1 to 13, characterized in that the threaded part (83) between the handle and display part (82) and the sealing ring fixing part (84) is arranged so as to be sealed against the heating water. 15. Distributor valve according to one of claims 1 to 14, characterized in that the branch pipe (48) is arranged at least partially in the main line section (45).